Smaller Foraminifera From Guam
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 Smaller Foraminifera From Guam
By RUTH TODD
GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1
Four hundred and fifty-three species, subspecies, and varieties (one species new) from upper Eocene, lower Oligocene, Miocene, and Recent deposits
UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1966 UNITED STATES DEPARTMENT OF THE INTERIOR
STEWART L. UDALL, Secretary
GEOLOGICAL SURVEY
William T. Pecora, Director
For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20420 - Price 75 cents (paper cover) CONTENTS
Page Page Abstract ______11 113 Introduction ______1 23 Analyses of faunas ______1 23 Eocene, Tertiary &______1 33 --______-___ 3 34 ______7 35 Recent ______12 Index 37
ILLUSTRATIONS
[Plates 1-19 follow index]
PLATE 1. Foraminifera from the Eocene of Guam. PLATE 13. Cassidulinidae and Rotaliidae from the Miocene 2. Planktonic Foraminifera from the Eocene of of Guam. Guam. 14. Planktonic Foraminifera from the Miocene of 3. Species of Globorotalia from the Eocene of Guam. Guam. 4. Benthonic Foraminifera from the Oligocene of 15. Cassidulinidae, Globigerinidae, and Globoro- Guam. taliidae from the Miocene of Guam. 5. Buliminidae from the Oligocene of Guam. 16. Species of Globorotalia from the Miocene of 6, 7. Benthonic Foraminifera from the Oligocene of Guam. Guam. 17. Hyperamminidae, Placopsilinidae, Valvulinidae, 8. Planktonic Foraminifera from the Oligocene of and Miliolidae from Recent sediments around Guam. Guam. 9, 10. Species of Globigerina from the Oligocene of Guam. 18. Lagenidae, Buliminidae, Elphidiidae, Discor- 11. Planktonic Foraminifera from the Oligocene of bidae, and Cassidulinidae from Recent sedi Guam. ments around Guam. 12. Benthonic Foraminifera from the Miocene of 19. Pegidiidae, Rotaliidae, and Anomalinidae from Guam. Recent sediments around Guam. Page FIGURE 1. Localities of Eocene, Oligocene, and Miocene smaller Foraminifera studied from Guam-______18 2. Speculative correlations between planktonic Foraminifera zones, the European time scale, and the Indonesian letter classification.______22
TABLES
TABLES 1-3. Distribution of smaller Foraminifera Page 1. In the Eocene of Guam______12 2. In the Oligocene of Guam______6 3. In the Miocene of Guam______11 4. Distribution of Recent Foraminifera around Guam. 14 III
GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS
SMALLER FORAMINIFERA FROM GUAM
By RUTH TODD
ABSTRACT The several assemblages here discussed are compared Rich assemblages of smaller Foraminifera are tabulated from with those of comparable ages and ecology that have two samples representing the upper Eocene, four samples repre already been described from the nearby island of Sai senting the lower Oligocene, and seven samples representing the pan, about 120 miles north-northeast of Guam (Todd, Miocene; some of the species are illustrated. A late Eocene (Tertiary &) age for part of the Alutom Formation is supported 1957). Comparisons are also made with Recent and fos by the planktonic species of the f oraminif eral population. Abun sil assemblages described from several islands of the dant planktonic Foraminifera in the Mahlac Member of the Marshall Island group, particularly Eniwetok and Alutom Formation permit correlation of the Mahlac Member Bikini, respectively some 1,150 to 1,350 miles east of with the GloMgerina sellii zone of early Oligocene age, which Guam (Cushman and others, 1954; Todd and Post, was described from East Africa. The hiatus between Oligocene and Miocene is marked by a 1954; Todd and Low, 1960). major faunal change in which more than 40 percent of the I am grateful for helpful advice, discussions, and Oligocene assemblage became extinct. The Miocene assemblage suggestions received from many colleagues during the from the Janum Formation is similar in species and in paleo- course of my work. Doris Low worked with me and ecology to modern sediments around Guam. Although larger gave invaluable assistance in the preparation of the Foraminifera indicate a probable age of Tertiary g for part of the Janum Formation, the evidence of the planktonic Foraminifera material for study and the tabulation of results. The favors an age of Tertiary /. drawings are the work of Elinor Stromberg. Because the correlation of the planktonic Foraminifera zona- tion with the Oligocene-Miocene boundary and with the Euro ANALYSES OF FAUNAS pean time scale has been altered during the past decade, it is EOCENE, TERTIARY b necessary to correct two of the age assignments originally made. The Eocene is represented by only two samples: Ei 4-1 The Donni Sandstone Member of the Tagpochau Limestone of Saipan is now considered as approximately Tortonian (Ter and Jl 2-1. In both these samples from the Alutom tiary /) and the Globifferinatella insweta/Globigerinoicles M- Formation of late Eocene and Oligocene age, planktonic spherica zone on Saipan and Yap is considered as early Miocene specimens are noticeably predominant, and the ben- (Aquitanian and Tertiary e). Correlation of the Janum Forma thonic specimens, although comprising a larger number tion is based chiefly on GloMgerina nepenthes, and the age of of species, are few. Because of this predominance of the Janum is estimated to be slightly younger than that of the Donni, but still approximately Tortonian in part. the planktonic element, both samples are interpreted as Study of species from beaches, reefs, lagoons, channels, and relatively deep water deposits, such as are currently outer slopes around Guam provides a basis for paleoecologic being deposited on the outer slopes of Guam. interpretation of moderately deep outer-slope deposition in the The interpretation of the age of the foraminiferal three formations studied. assemblage is based upon several considerations. First, INTRODUCTION the two most abundant planktonic species, Globorotalia, This paper records the assemblages and illustrates centralis Cushman and Bermudez and Globigerapsis some of the species of smaller Foraminifera character index (Finlay), indicate middle or upper Eocene (Bolli, 195Tc, text fig. 26 [range chart]). istic of three different ages of sedimentary rocks on Second, both samples contain rare specimens of the Guam: late Eocene (Tertiary 6) in the Alutom Forma Eocene genus Hantkenina. Sample Ei 4-1 contains tion, early Oligocene (Tertiary c) in the Mahlac Mem Hantkenina alabamensis Cushman, and in sample Jl 2-1, ber of the Alutom Formation, and Miocene (Tertiary both H. alabamensis and H. inflata Howe are present. f or g) in the Janum Formation. The Foraminifera Both of these species are reported in the upper Eocene, found in the beach sands, on the reefs, in the lagoons and H, alabamensis is reported to range also into the and channels, and on the outer slopes around Guam, middle Eocene, at least sporadically (Thalmann, 1942, are also recorded. table 1). II 12 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS
Third, several other planktonic forms from these Significant benthonic Foraminifera in the Eocene samples of two samples, all rare, also have restricted ranges, as the Alutom Formation Continued Species Reported occurrences elsewhere follows: GloborotaHa spinulosa Cushman and G. spinu- *Nwttallidcs frumpy i (Nut- Paleocene and Eocene of mid-Pacific loinflata (Bandy) are both reported (Bolli, 1957c, text tall). Mountains; Eocene, Guayabal Formation of Mexico; Eocene of fig. 26 [range chart]) to be confined to the middle Trinidad, Haiti, and Barbados; Eocene. Globorotalia wilcvxensis Cushman and Ponton Oligocene of Cuba; Oligocene of the Apennines; Eocene of Czecho is reported (Bolli, 1957a, text fig. 11 [range chart]) to slovakia ; Tertiary of the Cau be restricted to the lowermost Eocene. Still other plank- casus ; Paleocene and Danian of the Crimea; Eocene of New tonic species, also rare, are less narrowly restricted but Zealand. do include the Eocene within their ranges. They are Pleurostomella cubensis Eocene of Cuba; Eocene and Oligo Cushman and Bermudez. cene of Trinidad ; Eocene of Mis Globigerina pera Todd and G. yeguaensis Weinzierl and sissippi ; Eocene in submarine core off northeastern United Applin, which range from middle Eocene to but not into States; Eocene of central Seran the Chattian, Globigerina gortanii (Borsetti), which Indonesia. ranges from upper Eocene to but not into the Chattian The remaining benthonic species are either wider (Eames and others, 1962, text fig. 20 [range chart]), ranging or are too poorly preserved to be identified and Globigerina venezuelana Hedberg, which ranges with certainty. A few, such as Oridorsalis umbonatus from middle Eocene upward throughout the Oligocene (Reuss) and Osangularla cutter (Parker and Jones), and Miocene (Bolli, 1957b; 1957c, text figs. 18,26 [range appear to have ranges extending from Eocene to Eecent. charts]). Table 1 gives the species found in the two Eocene sam ples of the Alutom Formation. In spite of the apparent restriction of a few of the rarer Eocene planktonic species to middle and lower TABLE 1. Distribution of smaller Foraminifera in the Eocene of Eocene, I believe the age of these two samples from Guam the Alutom Formation can be best interpreted as late Localities Species Eocene. Ei 4-1 Jl 2-1 Among the benthonic species, only a few appear to have restricted stratigraphic ranges. Of these, the fol Valvulinidae: Valvulina martii Cushman and Bermudez lowing support the late Eocene age that is indicated by Miliolidae: the planktonic specimens. An asterisk indicates species Triloculina sp. B______that seem to have become locally extinct after the Lagenidae: Eocene. Robulus sp ______Vaginulinopsisl sp ______Dentalina? spp______Significant benthonic Foraminifera in the Eocene samples of Nodosaria affinis Reuss?______the Alutom Formation Chrysalogonium longicostatum Cushman and Jarvis ______Species Reported occurrences elsewhere Buliminidae: Alabamina conica Todd_ Bulimina semicostata Nuttall ______Upper Eocene, Densinyama and tuxpamensis Cole ______Hagman Formations of Saipan. Bulimina semicostata Nut- Bolivina choctawensis Cushman and Mc- Upper Eocene of Saipan ; lower Eo Glamery ?..______tall. cene of California ; Eocene, Guay- Orthomorphina parvula Todd, n. sp______abal Formation of Mexico; and rohri (Cushman and Stainfor th) ______Eocene of Cuba. Stilostomella nuttalli (Cushman and Jarvis)?__ * Bulimina tuxpamensis Upper Eocene of Saipan; Eocene, subspinosa (Cushman)______Cole. Chapapote Formation of Mexico ; verneuili (d'Orbigny). ______Eocene of Cuba and Dominican Ellipsoidinidae: Republic ; Oligocene of Trinidad; Pleurostomella cubensis Cushman and Ber- Mioeene and Eocene of Spain ; mudez______Eocene of Italy. Ellipsoglandulina labiata (Schwager ) ______Cibicides havanensis Cush Eocene of Cuba; middle and upper Discorbidae: man and Bermudez. Eocene and lower Oligocene of Rosalina sp. ------X Barbados. Rotaliidae: *Cibicides macrocephalus Upper Eocene of Eniwetok ; Eocene Gyroidina nitidula (Schwager) ______(Giimbel). of Bavaria. Eponides ocalanus Cushman ______*Cibicides tuxpamensis Eocene, Aragon and Chapapote For Oridorsalis umbonatus (Reuss) ______Cole. mation of Mexico; lower Oligo Nuttallides trumpyi (Nuttall) ______cene, Alazan Formation of Mex V alvulineria? sp ------ico ; lower Oligocene of Dominican Stomatorbina torrei (Cushman and Bermudez) Republic. Osangularia culler (Parker and Jones) ______X *Eponidcs ocalanus Cush Upper Eocene of Eniwetok ; upper Alabamina conica Todd______man. Eocene of southeastern United Neorotalia floscula (Todd and Post) ______States. Amphisteginidae : *Neorotalia floscula (Todd Eocene and Oligocene of Bikini and Asterigerina marshallana Todd and Post____ and Post). Eniwetok. Amphistegina bikiniensis Todd and Post_-__ SMALLER FORAMINIFERA FROM GUAM 13
TABLE 1. Distribution of smaller Foraminifera in the Eocene of pliapertura ranges slightly higher and slightly lower; Guam Continued G. gortanii, G. increbescens, and G. senilis range lower Localities but no higher; G. yeguaensis ranges much lower but no Species higher; and Cassigerinella chipolensis ranges much E14-1 J12-1 higher but no lower (Eames and others, 1962, text fig. Cymbaloporidae: 20 [range chart]). Globigerina dissimilis Cushman Halkyardia bikiniensis Cole X and Bermudez, G. suteri (Bolli), and G. venezuelana. Nonionidae: Nonion maoricum (Stache) X Hedberg are all reported (Bolli, 1957b; 1957c, text figs. Anomalinidae : 18, 26 [range charts]) as having long ranges, extending Cibicides floridanus (Cushman) _ X havanensis Cushman and Bermudez____ X X from Eocene to Miocene. Globigerina opima nana X (Bolli) is reported as ranging no higher than Oligocene X Planorbulinidae : in Trinidad (Bolli, 1957b, text fig. 18 [range chart]) Gypsina globula (Reuss) - X but as having a long range, from Eocene to Miocene, Rupertiidae: Carpenteria hamiltonensis Glaessner and in East Africa (Eames and others, 1962, text fig. 20 X [range chart]). In either interpretation, its range does Globigerinidae: X X include the Lattorfian-Rupelian. Globigerina danvil- X lensis Howe and Wallace and Globigerinella danvillen- pera Todd ______X yeguaensis Weinzierl and Applin _ _ _ "XX sis (Howe and Wallace) (originally described under X N onion] were both first described from the Jackson Hantkeninidae : Hantkenina alabamensis Cushman _ X X Eocene at Danville Landing, La. Both have been re X ported from other areas, mostly in the Eocene but also Globorotaliidae : Globorotalia centralis Cushman and Ber- in the lower Oligocene. Chiloguembelina cubensis X X (Palmer), described from the upper Eocene and lower X spinulosa Cushman X X Oligocene of Cuba, is reported (Beckmann, 1957, text X fig. 16) to extend the upper part of its range into the Globigerina ampliapertura and Globorotalia opima OLIGOCENE, TERTIARY c opima zones of the Oligocene in Trinidad. In consideration of the ranges reported for the vari Tertiary c beds are represented by four samples from ous planktonic species found in the four Oligocene sam the Mahlac Member of the Alutom Formation. The ples, it may be said with a fair amount of confidence assemblages in two of these samples, Hi 6-1 and Gj that the age of the samples falls somewhere in the Lat 13-1, are very rich and well preserved. torfian or Rupelian and also within the Globigerina A few species are identical with those in the Eocene sellii zone (Blow and Banner, 1962, p. 68, text fig. 20 fauna, but the Oligocene assemblages are much richer [range chart]). than those of the Eocene and include more than 2i/£ Probably the closest known assemblage (both in times as many species. Like the Eocene samples, these faunal similarity and geographic distance) to this one Oligocene ones are predominantly composed of plank- from the Alutom Formation is the one reported from tonic specimens. Therefore, I intrepret them as from Lindi in Tanganyika on the east coast of Africa (Blow the outer slope, probably from moderately deep deposits. and Banner, 1962). Again, as in the Eocene samples, the interpretation The finding of a single specimen of the Eocene genus of age is based primarily on the planktonic assemblages. Hantkenina in the Oligocene sample Hi 6-1 throws The planktonic assemblage is more varied than that doubt on the inclusion of this sample with the other in the Eocene samples. The most narrowly restricted three of Oligocene age. In spite of diligent search for forms are Globigerina sellii (Borsetti) and Globigerina additional specimens of Hantkenina to confirm its oc tripartita Koch tapuriensis Blow and Banner, whose currence in Hi 6-1, no more specimens were found, and ranges are indicated (Eames and others, 1962, text it was concluded that the single specimen was rede- fig. 20 [range chart]) to be restricted to Lattorfian and posited from older beds. Moreover, evidence of re Rupelian. working in Hi 6-1 has already been reported by Cole Globigerina ampliapertura Bolli, G. gortanii (Bor (1963, p. E4 and table 1) who found Eocene larger setti), G. increbescens Bandy, G. senilis Bandy, G. Foraminifera in this sample. yeguaensis Weinzierl and Applin, and Cassigerinella The lack of Globigerina sellii (Borsetti), the zone chipolensis (Cushman and Ponton) all include the fossil that is reported to be limited to the zone, throws Lattorfian-Rupelian in their ranges. Globigerina am further doubt on the precise correlation of sample Hi 14 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS
6-1 with the other three samples, Gj 13-1, Gj 11-1, Bermudez are totally lacking in sample Hi 6-1, and Gj 14-1, that are assigned to this zone. The fur whereas the major constituents of Hi 6-1 are Globi ther circumstance that sample Hi 6-1 contains three gerina venezuelana Hedberg, G. gortanii (Borsetti), additional planktonic species, namely Globigerina dan- and G. ampliapertura Bolli. vUlensis Howe and Wallace, G. yeguaensis Weinzierl It is therefore concluded that sample Hi 6-1 is early and Applin, and Globigerinella danvittensi-s (Howe Oligocene in age, probably slightly older than the other and Wallace), none of which are found in any of the three lower Oligocene samples. The presence of the other three Oligocene samples and all of which have single specimen of Hantkenina inflata Howe can be in ranges extending farther downward than upward from terpreted either as a redeposited specimen or as an the lower Oligocene, is yet another point in favor of example of extension of the Eocene genus across the differentiating sample Hi 6-1 from the remaining three Eocene-Oligocene border. Such reported upward ex Oligocene ones. The recognition in sample Hi 6-1 tensions of Hantkenina are not unknown. (See Thal- of forms transitional between Globigerina ampliaper- mann, 1942, p. 817-818, tables 1, 2.) tura Bolli and Globorotalia centralis Cushman and The benthonic parts of the Oligocene samples are Bermudez forms identical with some illustrated from much richer, more varied, and more abundant than the the highest Eocene zone in Trinidad is an additional benthonic parts of the Eocene samples. Among the point in favor of interpreting Hi 6-1 as slightly older benthonic species, a considerable number have variously than the Globigerina sellii zone. restricted stratigraphic ranges, and these ranges sup Nevertheless, in spite of the fact that the previously port the interpretation of early Oligocene (Tertiary eyrichi Reuss, B. fastigia Cushman, B. olig Significant benthonio Foraminifera in Oligocene samples from Significant benthonic Foraminifera in Oligocene samples from the Mahlac Member of the Alutom Formation Continued the Mahlac Member of the Alutom Formation Continued Species Reported occurrences elsewhere Reported occurrences elsewhere Bolivina plicatella mera Miocene of Florida; Oligocene of Nodosarella subcylindrica Miocene? of Virgin Islands; Oligo Cushman and Ponton. Texas; Tertiary of Dominican Cushman. cene of Trinidad. Republic. N onion maorioum Upper Eocene and lower Oligocene Bolivina tumida Oushman. Miocene of California. ( Stache). of New Zealand. Bolivina vicJcsburgensis Oligocene of Eniwetok; lower Oli Nonion micrum Cole______Eocene of Saipan, Eniwetok, and (Howe). gocene of Mississippi and Ala mid-Pacific Mountains; Eocene, bama. Guayabal Formation of Mexico; Bolivinopsis cubensis Upper Eocene of Cuba ; Eocene and Eocene of California, Texas, Lou (Cushman and Bermu- Oligocene of Trinidad. isiana, Mississippi, and Georgia; dez). Eocene in submarine core off Bulimina alazanensis Oligocene of Mexico, Cuba, Trini northeastern United States. Cushman. dad, and Dominican Republic; Pararotalia byramensis Oligocene of Mississippi, Alabama, Eocene of California, Cuba, and (Cushman). and Florida; upper Eocene of Trinidad; Oligocene and Miocene Cuba ; upper Oligocene and lower of the Virgin Islands; mid-Ter Miocene of Puerto Rico ; Miocene tiary of Venezuela; Aquitanian of Eniwetok. of northern Colombia; Miocene Pleurostomella bierigi Oligocene of Cuba, Trinidad, and of Majorca; Aquitanian of Italy. Palmer and Bermudez. Dominican Republic; Eocene of Bulimina bleeckcri Hed- Oligocene of Venezuela, Cuba, Do Trinidad; middle Eocene to lower berg. minican Republic, Trinidad, and Oligocene of Barbados; upper Texas; Aquitanian of northern Oligocene and lower Miocene of Colombia. Puerto Rico; Oligocene and Mio Bulimina semicostata Nut- Eocene of Saipan; Eocene, Guaya- cene of Venezuela; Miocene of tall. bal Formation of Mexico; Eocene Jamaica and Majorca. of California and Cuba. Pleurostomella cubensis Eocene of Cuba; Eocene of Missis Caucasma grata (Parker Eocene of Cuba, Trinidad, and Cali Cushman and Bermu sippi ; Oligocene of Trinidad; Eo and Bermudez). fornia ; Oligocene of Trinidad; dez. cene in submarine core off north upper Eocene and lower Oligo eastern United States; Eocene of cene of Barbados. Saipan. Chilostomella cyclostoma Eocene of Saipan; Oligocene of Pleurostomella naranjoen- Eocene of Cuba and Trinidad; Oli Rzehak. Austria. sis Cushman and Ber gocene of Trinidad; middle and Chrysalogonium ciperense Oligocene of Trinidad. mudez. upper Eocene of Barbados. Cushman and Stain- Stilostomella recta (Pal Oligocene of Cuba and Trinidad; forth. mer and Bermudez). lower Oligocene of Barbados; Eo Chrysalogonium lanceo- Oligocene of Trinidad; Eocene of cene of Trinidad, Ecuador, and lum Cushman and Jar- Cuba and Trinidad; Miocene of Peru; Eocene in submarine core Jamaica, Dominican Republic, off northeastern United States; and Majorca; middle Eocene to Miocene of California and Ja lower Oligocene of Barbados. maica. Chrysalogonium longicos- Oligocene of Trinidad and Domini Stilostomella subspinosa Lower Miocene of Trinidad; Mio tatum Cushman and can Republic; upper Eocene and (Cushman). cene? of Virgin Islands; Eocene Jarvis. lower Oligocene of Barbados; and Oligocene of Trinidad; mid Miocene of Majorca; lower Mio dle Eocene to lower Oligocene of cene of Algeria. Barbados. Chrysalogonium tenuicos- Eocene of Cuba and Trinidad; Oli Stomatorbina torrei Upper Eocene of New Zealand; Eo tatum Cushman and gocene of Trinidad and Domini (Cushman and Bermu cene of Cuba. Bermudez. can Republic; middle Eocene to dez). lower Oligocene of Barbados; Vaginulinopsis sublituus Oligocene of Trinidad. Miocene of Majorca. multicamerata (Cush Cibicides havanensis Eocene of Cuba; middle Eocene to man and Stainforth). Cushman and Bermudez. lower Oligocene of Barbados. Virgulina colei Cushman__ Oligocene of Mexico. Cycloloculina cubensis Eocene of Cuba; middle Oligocene Virgulina zetina Cole_____ Eocene, Guayabal Formation of Cushman and Bermu to lower Miocene of Puerto Rico. Mexico; Eocene of California, dez. Louisiana and Georgia; Oligo cene of Alabama. Ellipsoglandulina labiata Miocene of Kar Nicobar; Eocene of (Schwager). Saipan; lower Oligocene of Mex ico and California; Eocene and Table 2 gives the species of smaller Foraminifera of Oligocene of Trinidad; Eocene of Oligocene age found in the Mahlac Member of the Ecuador; middle Eocene to lower Oligocene of Barbados; upper Alutom Formation on Guam. The few species noted Miocene of Dominican Republic ; in a preliminary study that was made of these same Miocene of Majorca and Spain ; Oligocene of Italy. samples and incorporated into a report by Tracey and Eponides duprei ci.ervoen- Oligocene, Tumey Formation (of others (1964, p. A22) included a few names not given sis Cushman and Simon- Atwill, 1935) of California; Eo son. cene, Oligocene, and Miocene of in the following table. These discrepancies have re Eniwetok. sulted from the shifting of a species from one genus Eponides kiliani (An- Miocene of Saipan; Oligocene of dreae). Alsace. to another (such as Cassidulina chipolensis to Cassi- Halkyardia bikiniensis Oligocene of Bikini; Eocene and gerinella), from the synonymizing of one species with Cole. Oligocene of Eniwetok. Nodosarella robusta Cush Miocene ? of Virgin Islands; Eocene another (such as Siphogenerina, seriata, a synonym of man. and Oligocene of Trinidad; mid 8. striata), from the correction of identification (such dle Eocene to lower Oligocene of Barbados. as Bolivina aff. B. tricosta for B. choctawensis), and 16 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS from the refinement of identification (such as Bolivi- TABLE 2.- -Distribution of smaller Foraminifera in the Oligocene nopsis cubens'is for B. sp.). of Guam Continued Localities TABLE 2. Distribution of smaller Foraminifera in the Oligocene Species of Guam Hi Gj Gj Gj 6-1 13-1 11-1 14-1 Localities Species Buliminidae Continued Hi Gj Gj Gj 6-1 13-1 11-1 14-1 Bolivina Continued vicksburgensis (Howe) ______X X Textulariidae: sp. B______-______.______X X ---- X Vulvulina spinosa Cushman_ _ _ X Bolivina (Loxostomum) rostra (Gush- Bolivinopsis cubensis (Cushman and man). ______X X X x Valvulinidae: x Karreriella chilostoma (Reuss) _ _ X X "x" X x sp x X Miliolidae: Angulogerina byramensis (Cushman) __ x ? X cooperensis Cushman ______x X X X Pyrgo sp - _ .___ X x X ? X Lagenidae: Ql"fc x X Robulus cf . R. cleriici (Fornasini) X X X rotulus (Stache) -__ .______X X X sp _- ____ .---_-__.__.___ _ X Orthomorphina parvula Todd, n. sp__-- X X X X Marginulina glabra d'Orbigny ______X Stilostomella aff. S. adelinensis (Palmer Vaginulinopsis sublituus multicamerata v (Cushman and Stainforth) ______X X X Saracenaria sp______x nuttalli (Cushman and Jarvis)____ X Dentalina cooperensis Cushman. ______X X X sp. B______X V X X sp. C_ . ______X X X X X X sp. D______X Ellipsoidinidae: Enantiomorphina sp ______v Pleurostomella bierigi Palmer and Nodosaria consobrina (d'Orbigny). _ X X X X X X cubensis Cushman and Bermudez_ X X X X aff. N. tosta Schwager ______X X naranjoensis Cushman and Ber- X X X x Chrysalogonium ciperense Cushman QT\ X and Stainforth? ______X X "x" Ellipsoglandulina labiata (Schwager) ___ X X X X lanceolum Cushman and Jar vis _ _ X X Nodosarella aff. N. acus Cushman and longicostatum Cushman and Jar- x vis. ______X X tenuicostatum Cushman and Ber- x mudez ______X X Discorbidae: Sp______-_____--_____-____-_ X X Rectoglandulina sp ______x X Plectof rondiculariidae : Discorbis balcombensis Chapman, Parr, Amphimorphina californica Cushman x and McMasters ______X Rotaliidae: Buliminidae: Asterigerinata bracteata (Cushman) X Buliminella septata Keyzer?______x X X X X Bulimina alazanensis Cushman. _ __ _ x x bleeckeri Hedberg. ______X x ---- X X _--_ X ovata d'Orbigny ______X X Eponides duprei ciervoensis Cushman X X X X X ? x Caucasina grata (Parker and Ber- QT-V x mudez)______x X X X X Fissurina fimbriata (Brady) ______v x X Stomatorbina torrei (Cushman and spp____- ______X X X Oolina squamosa catenulata (William- X ---- X son) ______X X X n. sp. aff. 0. gibbera (Buchner) x Pararotalia byramensis (Cushman) X Bolivina beyrichi Reuss _ _ _ _ X Cycloloculina cubensis Cushman and fastigia Cushman X x X gardnerae Cushman _ __ X X ---- Amphisteginidae : cf. B. minutissima Spandel X Asterigerina marshallana Todd and oligocaenica Spandel __ X Post?______-______----_ X paula Cushman and Cahill x Cymbaloporidae : plicatella mera Cushman and Pon X ton _ X x Elphidiidae : rhomboidalis (Millett) X X tortuosa Brady _ _ _ _ _ X ? Nonionidae: aff. B. tricosta Cushman and X X X Bermudez______X X X X tumida Cushman ______X "Nnninnella" m.inutissima Todd__ X SMALLER FORAMINIFERA FROM GUAM 17 TABLE 2. Distribution of smaller Foraminifera in the OUgocene The Eocene, although much less rich and less varied of Guam Continued than the Oligocene, has a large proportion of its species Localities (44 percent) in common with the overlying Oligocene. Species The Oligocene assemblage, on the other hand, although Hi 01 Gj Gj 6-1 13-1 11-1 14-1 composed of nearly 150 species as compared with the 92 species of the Miocene, has only 14 species (less than N onionidae C ontinued 10 percent) in common with the Miocene. Moreover, X Astrononion cf. A. australe Cushman probably more than 60 species (more than 40 percent V of the Oligocene assemblage) became extinct between X X Cassidulinidae: the lower Oligocene and the upper Miocene. X X tricamerata Galloway and Hemin- MIOCENE, TERTIARY / OR g way. ______X X X sp. B- X X ---- X The Miocene Janum Formation, like the upper Eocene sp. C X X and Oligocene Alutom Formation, was formed in mod Chilostomellidae : erately deep water. Planktonic specimens are predom Chilostomella cyclostoma Rzehak__ X X Pullenia bulloides (d'Orbigny) _ _ _ _ ... X inant and are accompanied by meager representatives X of a varied benthonic assemblage. Anomalinidae: X X X A total of seven samples from vertical sections (four X at Catalina Point, two at Lujuna Point, and one at X X X Anao Point) represent the Miocene Janum Formation. havanensis Cushman and Ber- Only one sample, Rr 15-1, has a rich fauna. Locations X lobatulus (Walker and Jacob) X X of these three vertical sections as well as of the other X samples studied on Guam are shown in figure 1. pseudoungerianus (Cushman). _ X Cibicidina danvillensis (Howe and As is true for the other fossil assemblages, the in Wallace)? ------v terpretation of age is based primarily on a few plank- X X _ _ __ Planorbulinidae : tonic species; however, several of the many benthonic Planorbulinella larvata (Parker and species serve to support and confirm the age indicated X Heterohelicidae : by the planktonic species. Because the original de Chiloguembelina cubensis (Palmer) X termination of the Janum Formation was made (Cole, Globigerinidae: X X 1963, p. E10; Tracey and others, 1964, p. A43) largely conglomerata Schwager _ __ X X X X on the basis of field evidence a Tertiary / species of danvillensis Howe and Wallace _ _ X dissimilis Cushman and Bermudez_ X Lepidocyclina within a pebble interpreted as having gortanii (Borsetti) X X X been reworked and two species characteristic of the X xxxxx X X Barrigada Limestone of Tertiary g age that were found sellii (Borsetti) _ _ _ X X in place at the base of the Janum Formation the as senilis Bandy _ suteri (Bolli) _ _ X X _--- signment of the Janum Formation to Tertiary g may tripartita tapuriensis Blow and Banner _ v be open to question. Correlation of the Janum Forma yeguaensis Wienzierl and Applin _ X tion is discussed under incongruities of correlations Globigerinella danvillensis (Howe and Wallace) v (p. 121-123). Globigerinoides trilobus (Reuse)? X X ---- On Guam the following planktonic species are charac Cassigerinella chipolensis (Cushman and Ponton) _ _ X X teristic of and restricted to Miocene; the species marked Hantkeninidae : by an asterisk are undoubtedly known in the Recent (see Hantkenina inflata Howe X Todd, 1964) but were not found in the Recent Gflobig- erhia ooze around Guam: Above the Mahlac Member of the Alutom Forma tion, a considerable thickness of Miocene beds inter Globigei'inanepenthes Todd *Globigerina conglomerata Schwager venes between the Mahlac Member and the next higher Globoquadrina altispira (Cushman and Jarvis) formation in which smaller Foraminifera are found. *0rbulinabilobata (d'Orbigny) Therefore, a radical difference in smaller Foraminifera Orbulinu suturalis Bronnimann is evident between the fauna of the lower Oligocene SphaeroidineUa disjuncta Finlay and that of the upper Miocene. In many of its aspects Sphaeroidinella kochi (Caudri) Sphaeroidinella seminulina (Schwager) the Miocene is only subtly different from the Recent Globorotalia menardii fijiensis Cushman now found around Guam in a comparable environment. Globorotalia menardii-tumida transition form GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS 144°40' 144°50' 13°40' 13°30r 13°20' FIGURE 1. Localities of Eocene, Oligocene, and Miocene smaller Foraminifera studied from Guam. SMALLER FORAMINIFERA FROM GUAM 19 Globorotalia tumida flexuosa (Koch) rence of Globoquadrina altispira (Blow, 1959, p. 179, Globorotalia fohsi robusta Bolli 183). Among the planktonic species, only the ones men In some short deep-sea cores from a guyot adjoining tioned below seem to be useful in limiting the age of the Eniwetok Atoll (Todd, 1964), Globoquadrina altispira formation to a specific part of the Miocene. occurs in the sections of the cores interpreted as late Globigerina, nepenthes Todd was described from the Miocene. Other recorded occurrences of G. altispira Donni Sandstone Member of the Tagpochau Limestone from the Miocene in the Pacific are from the Mid-Pacific of Saipan. Its vertical range in Venezuela and Japan Mountains (Hamilton, 1953), Sylvania Guyot off Bikini is reported (Blow, 1959, p. 178; Takayanagi and Saito, (Hamilton and Rex, 1959), and Yap Island in the 1962, text fig. 2) to be limited to the Globorotalia Carolines (Cole and others, 1960). mayeri/Globigerina nepenthes subzone and the Glo- Several estimates of the age ranges of these two spe l)orotalia menardii menardii/Globigerina nepenthes cies have been made. Blow (1959, chart 1) assigns the zone. These two zones encompass the upper part of the zones in which he reports Globoquadrina altispira to the Vindobonian and the lower part of the Sarmatian. Aquitanian and Burdigalian, and he assigns the zones The occurrence of G. nepenthes in several deep-sea cores in which he reports Globigerina nepenthes to the Vindo from North Atlantic sediment interpreted as Pliocene bonian and Sarmatian. Stainforth (1960, range chart (Ericson and others 1963, text fig. 5) does not require and p. 222) reports the range of Globoquadrina altispira the upward extension of range of this species, inasmuch to be from Stampian and Chattian to the Helvetian. as these authors mention (p. 733) the Miocene aspect of Drooger (1956, text fig. 1) reports the range of Globo the Pliocene and state that "the survival of Miocene quadrina altispira to be from Aquitanian to Tortonian. species into the Pliocene epoch implies that no abrupt The genus Sphaeroidinella is well represented in the or drastic temperature change occurred at the Miocene- Janum Formation. The specimens belonging in this Pliocene time boundary." A more reasonable explana genus fall into four species that are connected, by transi tion of the presence of Miocene species in the Pliocene tional individuals, into a single complex. This Sphae- might be that the sediments are, in reality, Miocene and roidinell'a complex includes, at one extreme of morpho that the Pliocene is less thick in the deep-sea Atlantic logical development, specimens having five or more than has been thought. chambers in the final whorl and a distinctly lobulated Globoquadrina altispira (Cushman and Jarvis) was periphery S. kochi (Caudri). At the opposite ex originally described from the Miocene of Jamaica and treme are specimens of S. dehiscens (Parker and Jones), has been widely reported from the Miocene of many the common Recent species that is nearly globular and parts of the world in the equatorial belt. Its reported unindented and that is composed of three chambers in occurrences indicate that G. altispira may be expected the final whorl. The forms intermediate between these two extremes are identified as S. seminulina. in any part of the Miocene, although it possibly has (Schwager). They show three or four chambers in the greater or lesser restricted ranges in various areas. On final whorl and' have a slightly indented periphery. Saipan it was found (Todd, 1957, table 3) in the Donni The fourth member of the Sphaeroidinella complex is Sandstone Member of the Tagpochau Limestone, where S. disjuncta Finlay, which is distinguished by its it occurred in association with Globigerina nepenthes coarsely reticulated wall surface. In number of cham Todd. It also occurs, but without the association of bers per final whorl and in the lobulation of its periph Globigerina nepenthes, in the underlying Fina-sisu ery, S. disjuncta includes both specimens that would be Formation (Todd, 1957, table 2), which was originally called S. kochi and others that would be called 8. described as of late Oligocene age but here is regarded seminulina. as of early Miocene age. In the Trinidad zonation it Three of the previously discussed species of Sphae was reported (Bolli, 1957b, text fig. 18) to range within roidinella,, that is, all but /S. dehiscens, are Miocene most of the Miocene, with the exception of the one low species. Moreover, /S. dehiscens, although characteris est zone and the two highest zones. In Trinidad, Glo tic of, and abundant in, many Recent deep water samples, boquadrina .altispira and Globigerma nepenthes are has also been found in the Miocene (Todd, 1957, pi. 79, reported to have mutually exclusive ranges; G. ne fig. 8). Thus the Sphaeroidinella complex supports a penthes occurs in the two uppermost zones of the Miocene age for part of the Janum Formation. Miocene. Likewise in Venezuela, the ranges of Glo Another highly variable complex in the Miocene may boquadrina, altispira and Globigerina nepenthes are be called the Globorotalia menardii-tumida transition mutually exclusive. Globigerina nepenthes first ap form. It includes rare individuals that, by themselves, pears at a higher horizon than the highest known occur could be regarded as typical of G. menardii (d'Orbigny) 110 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS and of G. tumida (Brady) ; however, most of the spec regarding the 6 species in Glaessner's list that are found imens fall somewhere between the two. The transition in the Miocene of Guam, the 38 remaining species fall form has a rather broad and thick test that has heavy into 25 genera. Twelve of these genera are represented walls, a limbate keel, a slightly curved dorsal surface, in the Miocene of Guam, and it is possible that some of and chambers slightly inflated ventrally. With these the species will prove to be not only generically identi specimens are others nearly typical of the subspecies cal but specifically so. For example, Vulvulina nico- fijiensis, which is characterized by a slightly flatter and barensis (Schwager) is possibly identical with V. rounder test, more numerous chambers, and a tendency spinosa Cushman; Eggerellal subovalis (Schwager) is toward peripheral lobulation; the subspecies ungulata, possibly identical with Eggerella brad.yi (or with which is characterized by a more nearly planoconvex Karreriella bradyil} ; Karreriella siphonella (Reuss) is test, a more inflated ventral surface, and an angled possibly identical with K. l>radyi (Cushman) ; and ventral face of the final chamber; and the subspecies Uvigerina hispida Schwager is possibly identical with flexuosa, which is characterized by a final chamber that Uvigerina prob Significant benthonic Foraminifera in the Miocene samples of greater depths and farther from shore than the Recent the Janum Formation Continued outer slope samples that were taken from depths less Species Reported occurrences elsewhere than 200 fathoms. Nodosaria insecta Miocene of Kar Nicobar and Java; Schwager. late Miocene and early Pliocene Table 3 gives by localities the smaller Foraminifera of Borneo; Tertiary of Japan. of Miocene age found in the Janum Formation on Nodosaria skobina Miocene of Kar Nicobar. Schwager. Guam. Discrepancies are to be found between the Orthomorphina fijiensis Pliocene of Fiji. species noted in my original examination of these same (Cushman). Orthomorphina perversa Miocene of Kar Nicobar; Miocene of samples (Tracey and others, 1964, p. A43) and the (Schwager). Jamaica; Oligocene of Cuba; species given in table 3. These discrepancies have re Pliocene of Italy. Osangularia culter (Parker Miocene of Kar Nicobar; Eocene, sulted from (a) the shifting of a species from one genus and Jones). Oligocene, and Miocene of Sai- to another (such as Eponides umbonatus to Oridorsalis pan; Eocene of Mexico and Cali fornia ; middle Eocene to lower and Siphonodosaria fijiensis to Orthomorphina) ; (b) Oligocene of Barbados; Eocene the synonymizing of one species with another (such as and Miocene of Spain; Aquita- nian of Algeria; Eocene of Bul Globigerina veneziwlana, a synonym of G. conglom- garia. erata, and Osangularia bengalensis, a synonym of 0. Pleurostomelia alternans Miocene of Kar Nicobar; Miocene Schwager. and Pliocene of Borneo ; Pliocene culter) ; (c) the correction of identification (such as of Fiji; Miocene of Jamaica; Tertiary of Dominican Republic ; Pulleniatina obliquiloculata for Globigerina inflata and Eocene and Oligocene of Bar Globorotalia hirsuta for G. canariensis) ; and (d) the bados ; Miocene of Spain, France, and Egypt; Pliocene of Italy and refinement of identification (such as Gyroidina lamar- Greece. ckiana and G. soldanii for G. spp.). In addition, some Pleurostomelia brevis Miocene of Kar Nicobar; Pliocene Schwager. of Fiji; Miocene of Japan; Eo of the indeterminate species and those whose generic cene of Saipan; Miocene of Ja maica and Dominican Republic; placement was questioned in the original study have Miocene of Spain, France, and been eliminated from table 3. Algeria. Pyrulina labiata Miocene of Kar Nicobar; Pliocene (Schwager). of Fiji. TABLE 3. Distribution of smaller Foraminifera in the Miocene Siphogenerina striata Miocene of Kar Nicobar; Miocene of Guam (Schwager). and Pliocene of Borneo and Java; Eocene and Miocene of Saipan; Localities Eocene and Oligocene of Trinidad. Stilostomella verneuili Miocene of Vienna Basin; Miocene Species (d'Orbigny). of Sumatra; Eocene, Oligocene, and Miocene of West Indies; Eo cene, Oligocene, and Miocene of Spain. Vulvulina spinosa Oligocene, Alazan Formation of Textulariidae: Cushman. Mexico; upper Eocene of Vene Vulvulina spinosa Cushman______X zuela ; Oligocene of Trinidad; Valvulinidae: upper Oligocene of Dominican Eggerella bradyi (Cushman)______Republic; middle Eocene to lower Karreriella bradyi (Cushman)______Oligocene of Barbados; Miocene Miliolidae: of Spain; Pliocene of Japan ; Re Quinqueloculina lamarckiana d'Orbigny. cent of Philippines. Pyrgo murrhina (Schwager)______X Lagenidae: Robulus sp______X The chief local differences between the Miocene and Dentalina communis d'Orbigny. ______the Recent benthonic faunas are in the families Textu- tauricornis Schwager. ______lariidae (7 species in the Recent and 1 in the Miocene), sp. A_____-___-_--______.______Dentalinal spp._____-___-___-____--_ X Miliolidae (52 in the Recent and 2 in the Miocene), Nodosaria equisetiformis Schwager _ X X insecta Schwager.______X Spirillinidae and Discorbidae (15 in the Recent and skobina Schwager ______not represented in the Miocene), and the families Lagena gracilis Williamson.______Poly m orphinidae: Rotaliidae, Pegidiidae, Amphisteginidae, Calcarinidae, Pyrulina labiata (Schwager) ______X and Cymbaloporidae (27 in the Recent and only 3 Buliminidae: Buliminella septata Keyzer______X rotaliids in the Miocene). Thus there is not much in Bulimina aguafrescaensis Todd and common between the Miocene benthonic and the Recent Kniker. ______-____-__-__--_-- Fissurina alveolata (Brady)______benthonic faunas. If anything, I believe the kinds of circulum Seguenza____-___-__-___ formosa (Schwager)______benthonic species present in the Miocene, supported by globosa Bornemann______the negative evidence of the kinds that are not present Bolivina aff. B. nitida Brady ______X X pusilla Sehwager______in the Miocene, indicate that the beds represented by silvestrina Cushman______aff. B. sinuatum Galloway and the few Miocene samples studied were deposited at Wissler______112 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS TABLE 3. Distribution of smaller Foraminifera in the Miocene TABLE 3. Distribution of smaller Foraminifera in the Miocene of Guam Continued of Guam Continued Localities Localities Species Species o 10 2 3 5 2 i 2 « M & & £ £ § Buliminidae Continued Globigerinidae Continued Reussella simplex (Cushman)______X Sphaeroidinella dehiscens (Parker and Uvigerina proboscidea Schwager______Jones) ______X X X X X X X proboscidea var. vadescens Gush- X man. ______kochi (Caudri). ______X X -- X X X Siphogenerina striata (Schwager)-_-____ VP'wiwiil'lYtfl .'Sf^lTWT'fl £TPf*^ X X X X X X Orthomorphina fijiensis (Cushman) _____ X X parvula Todd, n. sp______Hastigerina pelagica (d'Orbigny) __ _ v perversa (Schwager)______Globoro taliidae : Stilostomella verneuili (d'Orbigny)______X X X Trifarina bradyi Cushman.______hirsuta (d'Orbigny) ______X -- X X Ellipsoidinidae: X X X X Pleurostometta alternans Schwager______X X X brevis Schwager.______menardu-tumida transition form X X X X X X X Ellipsopleurostomella sp______X X X X X Rotaliidae: X Gyroidina lamarckiana (d'Orbigny)._ soldanii d'Orbigny______X Oridorsalis umbonatus (Reuss)______X X X Osangularia culter (Parker and Jones) _ _ RECENT Elphidiidae: Elphidium sp_-_---___-__-___-______X Foraminifera were studied from 98 Recent samples. Nonionidae: N onion pompilioides (Fichtel and Moll).. The samples have been grouped into the following Nonionella sp______X Astrononion novozealandicum Cushman categories : and Edwards____-__-_-_--______Beaches: Cassidulinidae: Cassidulina aflf. C. angulosa Cushman. _ _ (15 samples). carandelli Colom______X Reefs: carapitana Hedberg______Agana Reef (10 samples). delicata Cushman.______X Achang Reef (8 samples). minuta Cushman.______X X pacifica Cushman.______X X Pago Reef (12 samples). sagamiensis Asano and Nakamura. Cocos Barrier Reef (3 samples). subglobosa Brady______X Cocos I/agoon: subtumida Cushman.______nov. sp. of Germeraad (1946)_.____ X East-West profile (12 samples). sp. E of Todd (1957)___-__.______X North-South profile (9 samples). Ehrenbergina albatrossi Cushman. _____ X Channels: Chilostomellidae: Mamaon Channel (NW. end of Cocos Lagoon, 7 Pullenia bulloides (d'Orbigny)______X X sp______X samples). Sphaeroidina bulloides d'Orbigny______X Manell Channel (into Achang Bay, 4 samples). Anomalinidae: Laticarinina pauperata (Parker and Pago Channel (into Pago Bay, 8 samples). Jones) ______Outer slopes surrounding Guam : Planulina wuellerstorfi (Schwager)____ X X (10 samples). Cibicides cicatricosus (Schwager)______X lobatulus (Walker and Jacob)______The seven deepest of the outer-slope samples (those cf. C. pseudoungerianus (Cushman) _ Globigerinidae: from between 315 and 1,170 ft) provide the richest Globigerina aflf. G. apertura Cushman. _ _ assemblages found in the Recent. These seven samples conglomerata Schwager______X hexagona Natland______of globigerine ooze are similar to the samples of Miocene nepenthes Todd______X Globoquadrina altispira (Cushman and globigerine ooze from the Janum Formation, but they Jarvis) ______differ by having an admixture of shallower water ma Globigerinoides conglobatus (Brady)____ X sacculifer (Brady)______terial from upslope that is not found in the Miocene trilobus (Reuss)______X samples. Globigerinella aequilateralis (Brady)_ __ Globigerinita glutinata (Egger)______The major differences between the Miocene samples Orbulina bilobata (d'Orbigny)______suturalis Bronnimann______and the Recent outer-slope samples may be briefly sum universa d'Orbigny______X X X X marized as follows: The Recent samples show (a) an Pulleniatina obliquiloculata (Parker and Jones)______increase in numbers and diversity of arenaceous species; SMALLER FORAMINIFERA FROM GUAM 113 (b) great increase in abundance of specimens and diver INCONGRUITIES OF CORRELATIONS IN THE WESTERN sity of species of Miliolidae and Ophthalmidiidae; (c) PACIFIC appearance in some abundance of camerinids and During the past 10 years a rather detailed zonation peneroplids that probably originated upslope; (d) dis based on planktonic Foraminifera has been built up appearance of the family Ellipsoidinidae; (e) appear within the Cretaceous and Tertiary. It originated ance of species in the families Spirillinidae and mostly in the West Indian region but has been extended Discorbidae; (f) increase in numbers and diversity of to Europe, Africa, and Asia and is now regarded by species in the family Rotaliidae; (g) appearance in most of its users as having worldwide validity in the abundance of representatives of the families Amphi- equatorial regions. steginidae, Calcarinidae, and Cymbaloporidae, most of Because it was established on the basis of planktonic which also probably originated upslope; (h) decrease in Foraminifera and without any reference to either larger numbers and diversity of species in the Cassidulinidae; Foraminifera or mollusks, there is no positive and in and (i) appearance of species in the Planorbulinidae, disputable way in which the zonation can be correlated Rupertiidae, and Homotremidae. with either the European time scale or with the Indo The other four main ecologic subdivisions of Recent nesian letter classification. Moreover, there is no uni samples beaches, reefs, lagoons, and channels versal agreement as to where the various zones are to together contain a composite fauna that differs only be placed in terms of either of these other time scales. slightly in its four parts but is distinctly different from Nevertheless, some speculative correlations, as indicated the fauna from the outer-slope samples. in figure 2, may be made. The major differences between the deeper samples As a fundamental premise to the building up of cor from the outer slope and the shallower ones from the relations between beds that contain planktonic Fora beaches, reefs, lagoons, and channels may be briefly minifera, we must accept the hypothesis of worldwide summarized as follows: The shallower samples show contemporaneous existence of these zones and their (a) an increase in abundance of the miliolids; (b) the unchanging sequential relation to one another. Keep complete disappearance of the families Lagenidae, Poly- ing in mind that these two assumptions contemporane morphinidae, Cassidulinidae, Chilostomellidae, Ruper ous worldwide existence and unchanging sequence are tiidae, and Ceratobuliminidae; (c) the almost complete the keystone of our whole structure of correlation by disappearance of the families Heterohelicidae, Spiril planktonic faunas, we may proceed with tentative specu linidae, Robertinidae, Globigerinidae, and Globorota- lations about some of the correlations in the western liidae; (d) an increase in abundance of the camerinids, Pacific. peneroplids, and elphidiids; (e) a decrease in numbers The occurrence of Globigerina nepenthes in the Donni and diversity of species in the Buliminidae; (f) a nearly Sandstone Member of the Tagpochau Limestone on complete absence of all the deeper water species of Saipan and in the Janum Formation on Guam raises Amphisteginidae, leaving only A. madagascariensis ; the question of the correlation of these two occurrences and (g) an increase in abundance and robustness of and their placement in the worldwide planktonic zona the three species: Amphixtegina. madagascariensis^ Cal- tion. Estimated age (Todd, 1957, p. 280) of the Donni carina spengleri, and Baculogypsina sphaerulata. Sandstone Member was limited upward by the presence The Recent beach accumulations are typical of beaches of Orbulina suturalis and limited downward by the in the tropical Pacific, being characterized by a pre presence of Globorotalia menardii. In addition, the dominance of reef-dwelling species Baculogypsina presence of Globigerma nepenthes, a species described sphaerulata (Parker and Jones), C alcanna spengleri from the Donni although already known in the West (Gmelin), and Marginopora vertebralis Blainville Indian section, served to restrict the age more narrowly and by a scarcity of other species. The assemblages col through its limitation in the West Indian planktonic lected from the reefs, from the lagoons, and from the zonation. The resulting estimation of the age of the channels have little to distinguish them one from an Donni Sandstone Member as earliest Miocene was made other. If anything, there is perhaps a greater diversity in terms of the Globorotalia, mayeri and G. menardii of species in the lagoons and channels than on the reefs zones which were at that time regarded as lowermost and perhaps even a slightly greater diversity in the Miocene. lagoons, where the circulation of water is less active than Other authors have placed these two zones higher in in the channels. the European time scale. The lack of agreement re Table 4 gives by sample locality numbers the smaller garding their age is demonstrated by some of the cur Foraminifera of Recent age collected from Guam. rent interpretations of these two zones. Drooger (1956, 797-972 O 66 114 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS TABLE 4. Distribution of Recent Reefs Beaches Agana Achang Pago <0 « W «- en CO « CO >* >O CO t~ 00 01 -o 01 Hyperamminidae : X X Textulariidae: X X X X X X X X X Verneuilinidae: X X X X X X X Valvullnidae: v X X X X X Miliolidae: X X X X X X X X X V X X X X X X X X -- X X - X X X X X X X X X X X X X X X X X X X X X X X X X X X X V X X X X X X X X X X X - X X X X X X X X X X -- - X X " -- - X X X X -- -- X - X X X X X pacifica Cushman ______X ------X -- X ------X X ------X X X X X X X -- .. X Y v X X v X X X X X v X X -- v v X X X X X X X X -- -- X X -_ X spinata Cushman___------_-. ______.--. ... SMALLER FORAMINIFERA FROM GUAM 115 Foraminifera around Guam Reefs Continued Cocos lagoon Channels Outer slopes Pago Con. Cocos East-west profile North-south profile Mamaon Manell Pago >o CO OJ 03 CM >o » >o ^ CO 00 o 0 03 r*-0 OB CM o o * o 8 § 8 >o ?5 ?! s R f» * X X-. ...... _ ._ X __ .. ______X .. X X __ .. __ X .. X __ X X X __ X X __ X X _ ._ _. __ __ _ .. .. X X X .. X X X X X v v X X X X X -- - X X v v v X X X X X _. X X v ------X X - - - - - X - - - X - X X - - - X - - - X - - X - X - X - X X - - - X ------" X X X X X X - X X X ? X ..... X X X .. X __ X X X X X X X X X X v v v X X ..... X -_-_ X .. ______.. X .. .. X X X X .. X X X __ X __ __ X X X X X __ _ __ X __ __ _ X X .. __ _. __ __ X .. .. v ...... v v v X X v v v X X X X X X X X X X X X X X X X X X X X X X X X X X X ------X X - - X X X -- X - X X X X X X X X X X X X X X X X X - - X - X X X X X X-- X X X X -- X X X X X ;; X __ X X __ X __ X X X X v v X -- X -- X X X -- X -- -- X X X X X X X X X -- -- X X X X -- -- X X X ------X ------X X X X X X -- X X v v X X X - - X X X - - X X X X X X X :: X X X :: X - X ------X - - " - - - - X- X X X X X- X X X - - X X ------X X - - -- X -- X X ------X - -- - X X X - X X X - X ------X X X X X X X X X X - X - X - - - X - - - X - X - - - ~ X - - - X - - X - - X X ------' X - X X ------X -- X X ------X X X X X -- X -- -- X X X X -- X -- X X X X X X X X X X X -- X X v X X X X X - X X X X- v v X X -- X -- X X X X X X X X X X X ------X x~ X X X X - - X - - X X - - X X X - - - - X X X X X X X -- X X X X X X ? -- X - X X X X X X X X X X X X X X X X X X X X X X X ------X X X X X X X X X X X v X v X X X X X X X X X X X X X X X X - X -- -- X X X f . X X -- X -- X X - X X -- X -- X X __ -- _- X -- __ -- X _- X X X X _- -- X X X _- X -- -- X X X _- X -- -- X ------" X ------X v X v X X------X X X X X - - X X - X X X X X X X X -- X X X X X - X X X X X X X - X - X - X X - X X - - - X - X - X 116 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS TABLE 4. Distribution of Recent Reefs Beaches Agana Achang Pago » IN IN *- « CT> 5 denticulata var. striolata (Brady)- ______._ ...... Ophthalmidiidae: Trochamminidae : Placopsilinidae: v Haddonia torresiensis Chapman. ______------X -- X -- -- X X - -- X - X - X - X X - - -- X - - X Lagenidae: Polymorphinidae : Camerinidae: v X X X- X X X X X X X X X X X X X X X X X Peneroplidae: X X arietina (Batsch) - _ - _ .. __ .. _ _ ...... X X < X X X X X X X X X X X X X Marginopora vertebralis Blainville.. __ . _ ... __ ...... _ . X X X X X -- X X X X X X >< X X X X X X X X X X X X X X X X X X X X X Alveolinellidae: X Heterohelicidae: Buliminidae: X - X X "" porrecta Brady _ .. .. --..- .. ------.-.. . . - . _ . Rectobolivina bifrons var. striatula (Cushman).-. _ ____-_.. ______------Retissella pulchra Cushman . __ __ .. .. . - - - -- X- X ------Chrysalidinella earlandi Cushman. .. _ ...... __ _ _.__ ...... _ . _ - - - SMALLER FORAMINIFERA FROM GUAM 117 Foraminifera around Guam Continued Reefs Continued Cocos lagoon Channels Outer slopes Pago Con. Cocos East-west profile North-south profile Mamaon Manell Pago «o » CD w o» CO «O CO 8* X o IN => C4 O» o» o 10 2 *® § X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X ? X X X X X X X X ------X -- X X ------X X X X X X - X X ------X ------X X X X -- X X X X X X X X X X X v X X X X X -- X X X X X ? X - v X - X X X - X X - X X X X X X X X X X X X X X X X X - X X X X X - X X- X -- - X X - X X -- X _- X X -- X X X -- X v v X X X X X X X X X X X X X X X X X v X X X X X X X X X - X - - - - X X - - - X X X X X X X X X X X X X X X X X X X X X - v X -- v v v ----- X - X X - X X - X -- - - X - -- X X - X X X X - X X X X -- -- X - X X - X X X X X X X - - X - X X - -- X X X - X X X X X v X X X X X X X X X - X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X " X -- X X X X X X X X X X X X X X X X ? -- X X X -- v X-- X X -- X - X X X-- v X X X X v X X X X X X X X v X X - v X X v v X X X X X X X X X v v X X X X X X 118 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS TABLE 4. Distribution of Recent Reefs Beaches Agana Achang Pago 0 M - OJ o> o m * m CO 00 o> m O> IN 3 s s % a s S 0 ?: s o> s s s 3 OJ 3 s s S 1 1 M 1 I ft M s * 3 ss Buliminidae Continued Spirlllinidae: X Discorbidae: X X X X X X X Rotalildae: X X X X X X X X - X -- - X v X X X X - X X X X X v v v X X X X v v v v v v Pegidiidae: X X X X Amphlsteginidae : X v1 X X X - X X X X X X X -- X -- X X X X X X X X X X X X X X X radiata (Fichtel and Moll). __ Calcarinldae: Calcarina spengleri (Gmelln) __ . ... _. X X X X X X X X X X X X X X X X X X X X XX X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X Cymbaloporidae : v X X X X X X X X X X X X -- X X v v v X Elphidiidae: X X X X X X X X X Y X X X X X -- X X X X- X X X X X X X X X " "~ "~ X X " - X Cassidulinidae: C hilostomellidae : Sphaeroidina bulloides d'Orbienv. SMALLER FORAMINIFERA FROM GUAM 119 Foraminifera around Guam Continued Reefs Continued Cocos lagoon Channels Outer slopes Pago Con.. Cocos East-west profile North-south profile Mamaon Manell Pago N 1C o N tO "O tO c 0 o N S N h- N 0 « o Ss >s S3 3 S3 ?! g T R 8 s XI I-* g "O * TO 55 B fe 1 s CO i CO 55 § i c5 co 5 £ 3 § 3 3 3 § 3 il § 8 8 i 1 8 i i s S I £ i to to to S CO CO 1 7, X X X X X ... - X - y< ------v X X X X ------X X X X - X - ? X X X X ...... X ... - X - X X - - >< X ------X X X -- - X X X X X - - - X - X X - - ~ - - -- X ------X - X X - X X X Y y X v X X X - X - X X X .... X - X X X------X - - - X ------X - - - - X - - X X X - X- X X X X -- XX X X X X X ------X - X ------X - X X - - X ------X - X X -- X - - X - - X - - -- - X - -- - - X ------X X X - X -- X X -- X ------X -- - - X - - X ------X X - - X X X - X - - X - X X ------V X X X - - - X - -- X - X X - X X - X X X X X XX v X X X X X ? X X ? X X X X X X X X X X -- >< X ------X -- X - - - -- X - X X - - - X -- X - X X X X X X - - - X -- - X X X X X X X X X X X X X X X X X X XX X X XX X X X X X X X X X X X X X X X X X .. X X X X X X X X X X X X X X X X X X X X ? - X X X X X X X X X X )< X X X -- -- X X ? X X X X X X X X -- X X X X X X X X X X X X X X X X X X X X X X XX X X XX X X X X X X X X X X X X X X X X X X X X X X X X X X ----- X X X V X X X -- X - --- X X X X X X X X __ __ X -X ...... _ X X X X XX X X - X X ------X X X X X X X ------X X - X -- - X X X X - X X X ----- "x X X X X X X --- X X X X X X X X -- -- X -- -- X X ------X -- X -- X X -- X X X -- -- X -- X -- -- X ------" "" ... X X - X X -- X " X XX X 120 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS TABLE 4. Distribution of Recent Reefs Beaches Agana Achang Pago 00 CO CO I> CO CO >o 5O I> 00 OS OS CO t~ 8 8 CO s g s 8 » 88 § s O5 g § s § 3 s 8 1 CO 1 i M CO S CO 3 CO s § 3 s§ Nonionidae: Nonion boueanum (d'Orbigny) ___ japonicum Asano. . . . ____-.__ _ _ . . Anomalinidae: X Anomalina"! maculosa Todd __ - Cibicides cicatricosus (Schwager) .. ... lobatu lus (Walker and Jacob) .. -.-_-.-. X mayori (Cushman) ... pseudoungerianus (Cushman) _ __ ...... Planorbulinidae: X X X X X X - X Planorbulina acervalis Brady _ .. X X . Planorbulinella larvata (Parker and Jones)... _ _ __ ... __ ..______------X -- X ------X -- X X - X -- X X -- - -- X X Acervulina inha erens Schultze _ ..... ------... X X X X X X X X -- - X sp. of Todd (1957).... - ...... X X X X X X Rupertiidae: Homotremidae: Homotrema rubrum (Lamarck)- .--_---_-__.----______._ - - -- X X -- - X -- - X X -- - - - X X X X - - X -- X ------X - X X X - X Robertlnidae: C eratobuliminid ae : Globigerinidae: X Oloborotaliidae: text fig. 1) indicates that in European and North this boundary coincides with the boundary between the African sections the approximate boundary between the Helvetian and Tortonian. In Bandy's conception upper extent of Globorotalia mayeri and the lower ex (1964, text fig. 6) of the Cenozoic planktonic Foramini- tent of Globorotalia menardii would fall within the up feral zonation, the uppermost extent of the range of per part of the Tortonian. Blow (1959, chart 1) shows Globigerina nepenthes (which would be the upper in his studies in Venezuela that the two zones boundary of the Globorotalia menardii zone) coincides Globorotalia mayeri s. 1. and Globorotalia, menardii with the Sarmatian-Pontian boundary [but Pontian is s. 1. occupy all of the Vindobonian ( = Helvetian and a continental stage in the upper Miocene and therefore Tortonian) and the lower part of the Sarmatian. Stain- should not enter into correlation by planktonic For- forth (1960, range chart) shows that the upper extent aminif era], whereas the uppermost extent of the range of Globorotalia mayeri (which would be the top of the of Globorotalia mayeri (which would be the upper Globorotalia mayeri zone) coincides with the Helvetian - boundary of the Globorotalia mayeri zone) coincides Tortonian boundary. Bolli (1959, table 1) shows the with the Tortonian-Sarmatian boundary. boundary between the Globorotalia mayeri and Globo Thus it can be seen that there is no universal agree rotalia menardii zones in the West Indian section as ment as to where planktonic Foraminifera zones are to approximately equivalent to the basal Helvetian. Saito be placed in terms of the European time scale. There (1963, table 16) indicates that on Honshu Island, Japan, is, however, universal acceptance of the contemporane- SMALLER FORAMINIFERA FROM GUAM 121 Foraminifera around Guam Continued Reefs Continued Cocos lagoon Channels Outer slopes Pago Con. Cocos East-west profile North-south profile Mamaon Manell Pago C4 31 CO C4 C4 « CO 1-- o> 00 o M 0 c« 0 C4 « C4 »o rH o S « 3 CO §3 3 a C« S 1-- t^ ® CO g g « m CO S S 1 S I CO § S $ 8 m e 8S m 8 S S S S 3 3 a § s 8 S i >o 1 3 « « § « m m S 3 m m m m m § S i & i 2 co i CO CO CO S § !! V X X v y X X y y y X X X X X X X X v X X X X - X X X X ? X "x" X X __ X X __ X __ __ ...... __...... X X __ _ .. .. X _. .. .. X X _. .. _ .. X X X __ X X .. __ .. X X y X y v v X II X v X y X X X X X X X X X - - - X - X - - X ------~ -- X - ~ -- -- X ~ X " -- -- X -- X -- X X -- -- - X ------X X -- X -- X X X X -- -- X -- -- X -- X -- X X ------X X ------X X -- X -- X X X -- X -- -- -. ------X X X -- X X X X -- X X - X X X X X -- - X -- X -- X " - -- " ------X X " ------~ -- - ~ " ------X X X - X X - - X X -- X y X X X X X X X X v X X X X X X X X X X X X X X X X X X X - X X X -- X X - X X X X X X - v - X ous existence around the world of these zones and their sidered. Another possible explanation of the faunal unchanging relation to one another. similarity of the Donni Sandstone Member of Saipan The presence of the same assemblage of planktonic and the Janum Formation of Guam is that although Foraminifera (including such a narrowly restricted equivalent in facies they are not precisely so in age and species as Globigerina nepenthes in 'both the Janum For that a recurrence of facies brought back the several mation on Guam and the Donni Sandstone Member of planktonic species that appear to have a limited strati- the Tagpochau Limestone on Saipan suggests that the graphic range. Both the Donni and the Janum contain original interpretation that the Donni is of Tertiary e Globiger'ma. nepenthes, a species restricted to one age is subject to reconsideration. This assignment to zone the Gl Pleistocene Tertiary h Pliocene / Globigerina bulloides Sarmatian (. Sphaeroidinella seminulina Tertiary g o m Tortonian Globorotalia menardii/Globigerina nepenthes c c 0) > .§ Helvetian CGIobigerina nepenthes c i G/oborcta//a mayeri \ Globorotalia lenguaensis 0) Tertiary f o Globorotalia fohsi robusta Burdigalian ^ 0 Globorotalia fohsi lobata Globorotalia {ohsi fohsi 5 Globorotalia fohsi barisanensis fGlobigerinoides bispherica Globigerinatella insuefa - \ Globigerinoides triloba Aquitanian ( Catapsydrax stainforthi Tertiary e Catapsydrax dissimilis J FIGURE 2. Speculative correlations between planktonic Foraminifera zones, the European time scale, and the Indonesian letter classification. f era in the Eocene, Oligocene, and Miocene in Indonesia. was attributed to the Donni by me in 1957 (Todd, 1957, An upward extension of the classification (Tertiary g p. 280). and h) added later (Leupold and Van der Vlerk, 1931) The correlation of the Janum with Tertiary g was was based mostly on lignitic and estuarine f acies. No originally made upon the basis of the evidence of the reference to planktonic Foraminifera was made in either larger Foraminifera is discussed on page 17. The abun lower or upper part of the classification. Correlation dant population of planktonic Foraminifera found in between the letter classification and the European time the Janum is also inherently capable of providing a scale is generally not attempted, particularly in its later close age determination for the Janum, although not parts, Tertiary e, /, g, and h. Van der Vlerk's state directly in terms of the Indonesian letter classification. ment (1955, p. 75), made nearly 30 years after the estab The planktonic population of the Janum indicates its lishment of the Indonesian letter classification, that probable placement in one of the zones containing "correlation between Tertiary e and / and the Chat- Globigerina nepenthes. tian-Aquitanian-Burdigalian (or Vindobonian) is at In terms of Saito's (1962) interpretation of the range present quite impossible" is still applicable today. of Globigerina nepenthes, the Janum would fall some Glaessner (1959, chart 1), however, has indicated a where within the upper Helvetian or lower Tortonian. correlation for the Indo-Pacific region and Australia in In terms of Blow's (1959) interpretation, it would fall which Tertiary e is shown as equivalent to the upper within the "Vindobonian-Sarmatian?." In terms of part of the Oligocene and the Aquitanian; Tertiary / Bandy's (1964) interpretation, it would fall between equivalent to the Burdigalian, Helvetian, and Torton the middle Burdigalian and the top of the Sarmatian. ian; Tertiary g equivalent to the Sarmatian and the In terms of Glaessner's (1959) correlation chart, the lower part of the Pliocene; and Tertiary h equivalent Donni Sandstone Member of the Tagpochau Limestone to the upper part of the Pliocene. In Glaessner's cor (called Donni Tuff on the chart) is equivalent to the relation table, the Donni Sandstone Member of the Tortonian and also to the upper part of Tertiary /. Tagpochau Limestone is shown as belonging in the up per part of Tertiary / and also as equivalent to the Thus by a two-stage correlation (starting with the as Tortonian. In terms of the currently accepted approxi sumption that the Janum is approximately equivalent mate age of the planktonic species that are present in to the Donni and then that the Donni is equivalent to the Donni, this correlation with the Tortonian (and the Tortonian and to the upper part of Tertiary /) a concurrently with Tertiary /) is a more reasonable one possible interpretation as Tertiary / may be arrived than that of early Miocene age (and Tertiary e) that at for the Janum. SMALLER FORAMINIFERA FROM GUAM 123 All these possible interpretations of age of the Janum, sisu, being contemporaneous with the nepenthes assem however, have to be qualified by the tacit understand blage that is characteristic of the Donni. ing that there is nothing in the Janum that, per se. indicates its direct correlation with Tertiary /, with FAUNAL REFERENCE LISTS the Tortonian, or with any other stage of the European Two alphabetized lists one for the benthonic species time scale. However, Drooger's (1964) well-taken and one for the planktonic are included to facilitate point that "the labelling with stage names of deposits reference to the original source or to a systematic all over the world * * * forms a heavy burden to treatise. progress in stratigraphic correlations," should not in For each species that is illustrated a reference to the hibit the attempt to correlate between deposits in dis plates is included. The figures are grouped into four tant parts of the world, particularly if it can be done divisions, corresponding to the four ages that are stud on the basis of planktonic Foraminifera. ied, and the figures are arranged systematically on the Another attempt at correlation by means of plank- plates within each of these divisions. Following the tonic Foraminifera in the western Pacific was discussed by Cole and others (1960). On the island of Yap, reference, one or more letters are added to indicate the planktonic Foraminifera of the Globigerinatella insueta age or ages in which the species was found: E, Eocene, zone were found in association with larger Foraminif O, Oligocene, M, Miocene, and K, Recent. The samples era. The planktonic Foraminifera were correlatable in which each species was found may be determined with those of the Fina-sisu Formation of Saipan, which by referring to table 1 for the Eocene, table 2 for the in turn had originally been regarded as Tertiary d in age Oligocene, table 3 for the Miocene, and table 4 for the but without corroboration. The larger Foraminifera Recent. The localities from which the samples were were indicative of Tertiary / age and correlatable (Cole, collected are shown in figure 1 and are given following 1963, table 3) with the Bonya Limestone of Guam, the fauna. which is Tertiary / in age, and with beds on Fiji dated BENTHONIC SPECIES as Tertiary /. After discussing possible explanations Plate and figure numbers in parentheses in list below of this dilemma, such as reworking and local expansion refer to those illustrated in this report. of zones, the question was left unresolved. In view of present-day understanding of correlation Acervulina inhaerens 'Schultze. Oushman, Todd, and Post, 1954, by planktonic Foraminifera, new light may be shed on U.S. Geol. Survey Prof. Paper 260-H, p. 372, pi. 91, figs. 37, 38. R. this question. The Yap occurrence falls in the Globi Acervulina sp. Todd, 1957, U.S. Geol. Survey Prof. Paper 280-H, gerinatella insueta/Globigerinoides bispherica subzone. p. 292 (table 4), pi. 92, fig. 1'5. R. This zone is correlated with the uppermost Aquitanian Alabamina conica Todd, 1957, U.S. Geol. Survey Prof. Paper by several authors (Blow, 1959, chart 1; Bolli, 1959, 280-H, p. 295, pi. 69, fig. 11. EO. (PI. 6, fig. 3.) table 1; Stainf orth, 1960, range chart; Saito, 1963, table Alliatina translucens (Cushman). Nonionella translucent 16; Hanzawa, 1964, p. 298; Bandy, 1964, text fig. 5), but Cushman, 1933, U.S. Natl. Mus. Bull. 161, pt. 2, p. 45, pi. 11, Drooger correlated this zone with the upper part of the fig. 2. R. Ammomassilina alveoliniformis (Millett). Massilina alveolini- Helvetian (1956, text fig. 1). Only if the youngest esti formis Millett, 1898, Royal Micros. Soc. Jour., p. 609, pi. mate of age is used for the Globigerinatella insueta 13, figs. 5-7. R. zone namely, the upper part of the Helvetian would Amphimorphina californioa Oushman and McMasters, 1936, the insueta assemblage be contemporaneous with an Jour. Paleontology, v. 10, p. 513, pi. 75, figs. 21-25. O. assemblage of larger Foraminifera of Tertiary / age. Amphistegina Mkiniensis Todd and Post, 1954, U.S. Geol. Sur By placing the Donni in Tertiary / instead of Tertiary vey Prof. Paper 260-N, p. 563, pi. 201, fig. 4. E. Amphistegina lessonii d'Orbigny. Todd, 1965, U.S. Natl. Mus. e (as now seems more logical) the dilemma can be re Bull. 161, pt. 4, p. 33, pi. 11, fig. 4. R. solved. For then both the insueta/bispherica subzone Amphistegina madagascariensis d'Orbigny. Todd, 1965, U.S. and the nepenthes zone would fall into Tertiary /, the Natl. Mus. Bull. 161, pt. 4, p. 34, pi. 11, fig. 3; pi. 12, former at the base and the latter at the top. But without figs. 1, 2. R. both these assumptions (that is, the Donni being Ter Amphistegina radiata (Fichtel and Moll). Todd, 1965, U.S. Natl. Mus. Bull. 161, pt. 4, p. 34, pi. 13, figs. 1-3; pi. 14, tiary / and the insueta/bispherica subzone being Ter figs. 1-3. R. tiary /), I cannot explain the Yap occurrence of Amphistegina radiata var. papillosa Said. Cushman, Todd, insueta/bispherica planktonics in association with Ter and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, tiary / larger Foraminifera. Even though both assem p. 362, pi. 90, figs. 5, 6. R. Amphistegina radiata (Fichtel and Moll) var. of Cushman, blages might be placed in Tertiary /, I cannot conceive Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper of the insueta assemblage, characteristic of the Fina- 260-H, p. 363, pi. 90, fig. 4. R. 124 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS Amphistegina radiata (Fichtel and Moll) var. Amphistegina Astrononion cf. A. pusillum Hornibrook, 1961, New Zealand lessonii [part] Brady, 1884, Challenger Kept., Zoology, Geol. Survey Paleont. Bull. 34 (1), p. 96, pi. 12, figs. 229, v. 9, p. 740, pi. Ill, fig. 1. R. 236. O. (PI. 6, fig. 2.) Angulogerina albatrossi Cushman, 1932, Cushman Lab. Foram. Baculogypsina sphaerulata (Parker and Jones). Todd, 1960, Research Contr., v. 8, p. 45, pi. 6, figs. 11. 12. R. Tohoku Univ. Sci. Repts., 2d ser. (Geology), spec. v. 4, Angulogerina byramensis (Cushman). Cushman and Mc- p. 101, pi. 10, figs. 2, 5-7. R. Glamery, 1942, U.S. Geol. Survey Prof. Paper 197-B, Baggina parva Todd, 1957, U.S. Geol. Survey Prof. Paper 280-H, p. 72, pi. 6, figs. 4-10. O. (PI. 5, fig. 15.) p. 297, pi. 83, fig. 8. O. Angulogerina cooperensis Cushman, 1935, U.S. Geol. Survey Baggina totomiensis Makiyama. Asano, 1951, Illustrated cata Prof. Paper 181, p. 42, pi. 16, fig. 9. O. (PL '5, fig. 16.) logue of Japanese Tertiary smaller Foraminif era. Pt. 14 : Angulogerina vicksburgensis Cushman, 1935, Cushman Lab. Rotaliidae, p. 21, figs. 154, 155. R. (PI. 19, fig. 4.) Foram. Research Contr., v. 11, p. 33, pi. 5, figs. 3, 4. O. Bdelloidina aggregata Carter. Todd and Low, 1960, U.S. Geol. (PI. 5, fig. 17.) Survey Prof. Paper 260-X, p. 827, pi. 263, fig. 8. R. Angulogerina sp. O. Biloculinella globula (Bornemann). Boltovskoy, 1959, Argen A short, stout form having costae on the initial end. tina Servicio Hidrografia Naval Pub. H1005, p. 57, pi. 6, Anomalina coronata Parker and Jones. Brady, 1884, Chal fig. 11. R. (PI. 17, fig. 11.) lenger Rept., Zoology, v. 9, p. 675, pi. 97, figs. 1, 2. R. Bolivina beyrichi Reuss. Cushman, 1937, Cushman Lab. Foram. (PI. 19, fig. 8.) Research Spec. Pub. 9, p. 74, pi. 9, figs. 3-6. O. (PI. 5, Anomalina glabrata Cushman. Graham and Militante, 1959, fig. 6.) Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, p. 115, pi. 19, Bolivina choctawen-sis Cushman and McGlamery? Cushman, fig. 8. R. 1937, Cushman Lab. Foram. Research Spec. Pub. 9, p. 72, Anomalina granosa (Hantken). Vassilenko, 1954, Neft. geol. pi. 8, fig. 24. E. inst., Leningrad, Trudy, n. ser., no. 80, p. 70, pi. 6, figs. Bolivina compaota Sidebottom. Cushman, 1937, Cushman Lab. 2-4. O. (PI. 6, fig. 6; pi. 7, fig. 3.) Foram. Research Spec. Pub. 9, p. 135, pi. 17, figs. 22-24. Anomalinat maculosa Todd, 1957, U.S. Geol. 'Survey Prof. Paper R. 280-H, p. 296, pi. 92, fig. 12. R. Bolivina fastigia Cushman, 1937, Cushman Lab. Foram. Research Articulina pacifica Cushman, 1944, Cushman Lab. Foram. Re Spec. Pub. 9, p. 76, pi. 9, figs. 12-14. O. (PI. 5, fig. 13.) search, Spec. Pub. 10, p. 17, pi. 4, figs. 14-18. R. Bolivina gardnerae Cushman. Cushman, 1937, Cushman Lab. Articulina sp. R. (PI. 17, fig. 10.) Foram. Research Spec. Pub. 9, p. 60, pi. 7, figs. 25, 26. O. Only two specimens of this distinctive species were Bolivina hantkeniana Brady. Cushman, 1937, Cushman Lab. found in Recent sample 663 from 972 fathoms off the Foram. Research Spec. Pu'b. 9, p. 127, pi. 16, figs. 18-20 northeastern coast of Guam. The species appears to be R. (PL 18, fig. 8.) undescribed but cannot be erected on so few specimens. Bolivina cf. B. minutissima Spandel. Cushman, 1937, Cushman The test is rather compressed for the genus. The Lab. Foram. Research Spec. Pub. 9, p. 73, pi. 8, fig. 28. costae are high, sharp, and closely spaced and slightly O. (PL 5, fig. 9.) oblique to the axis of the chamber, thus curved around Bolivina aff. B. nitida Brady. Cushman, 1937, Cushman Lab. at the base of the chamber. The periphery is marked by Foram. Research Spec. Pub. 9, p. 136, pi. 17, fig. 25. M. one of the costae being about twice as high as the others, Bolivina oligocaenica Spandel. Cushman, 1937, Cushman Lat). and in the specimen that is not illustrated this costa Foram. Research Spec. Pub. 9, p. 74, pi. 9, figs. 1, 2. O. is serrate because it is broken. The aperture is sur (PL 5, fig. 7.) Bolivina paula Cushman and Cahill. Cushman, 1937, Cush rounded by a thickened lip. The illustrated specimen has man Lab. Foram. Research Spec. Pub. 9, p. 91, pi. 11. a second flaring lip below the main one, a freak develop fig. 9. O. ment that gives the specimen the appearance of a double Bolivina plicatella mera Cushman and Ponton. Cushman, aperture. 1937, Cushman Lab. Foram. Research Spec. Pub. 9, p. 90, Astacolus bradyi (Cushman). Cushman, Todd, and Post, 1954, pi. 11, figs. 5-8. O. (PL 5, fig. 8.) U.S. Geol. Survey Prof. Paper 260-H, p. 343, pi. 86, fig. 9. Bolivina pseudopygmaea Cushman. Cushman, 1942, U.S. Natl. R. (PI. 18, fig. 7.) Mus. Bull. 161, pt. 3, p. 29, pi. 8, fig. 6. R. Astacolus aff. A. califomicus Galloway and Wissler, 1927, Jour. Bolivina pusilla Schwager. Cushman, 1937, Cushman Lab. Paleontology, v. 1, p. 46, pi. 8, fig. 4. R. Foram. Research Spec. Pub. 9, p. 114, pi. 14, figs. 8, 9. M. Astacolus planulatns Galloway and Wissler. Cushman, Todd, Bolivina rhomboidalis (Millett). Cushman, 1937, Cushman and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, Lab. Foram. Research Spec. Pub. 9, p. 138, pi. 18, fig. 7. p. 343, pi. 86, fig. 7. R. (PI. 18, fig. 5.) OR. (PL 5, fig. 10.) Asterigerina marshallana Todd and Post, 1954, U.S. Geol. Sur Bolivina robusta Brady. Cushman, 1937, Cushman Lab. Foram. Research Spec. Pub. 9, p. 131, pi. 17, figs. 1-4. R. vey Prof. Paper 260-N, p. 562, pi. 201, fig. 3. EO? Bolivina silvestrina Cushman, 1937, Cushman Lab. Foram. Re Asterigerinata bracteata (Cushman). Todd and Low, 1960, U.S. search Spec. Pub. 9, p. 109, pi. 13, figs. 14-16. M. (PL Geol. Survey Prof. Paper 260-X, p. 843, pi. 260, fig. 8. O. 12, fig. 11.) Astrononion cf. A. australe Cushman and Edwards, 1937, Cush Bolivina aff. B. sinuata Galloway and Wissler. Cushman, 1937, man Lab. Foram. Research Contr., v. 13, p. 33, pi. 3, Cushman Lab. Foram. Research Spec. Pub. 9, p. 120, pi. figs. 13, 14. O. (PI. 6, fig. 4.) 14, figs. 19, 20. M. (PL 12, fig. 12.) Astrononion novozealmidicum Cushman and Edwards, 1937, Bolivina spinesoens Cushman. Cushman, 1937, Cushman Lab. Cushman Lab. Foram. Research Contr., v. 13, p. 35, pi. 3, Foram. Research Spec. Put). 9, p. 142, pi. 18, figs. fig. 18. M. (PI. 12, fig. 13.) 17-19. R. SMALLER FORAMINIFERA FROM GUAM 125 Bolivina striatula Cushman. Cushman, 1937, Cushman Lab. Bulimina semicostata Nuttall. Cushman and Parker, 1947, U.S. Foram. Research Spec. Pub. 9, p. 154, pi. 18, figs. 30, Geol. Survey Prof. Paper 210-D, p. 93, pi. 21, figs. 28, 29. 31. R. EO. (PL 1, fig. 1; pi. 5, fig. 4.) Bolivina tortuosa Brady. Cushman, 1937, Cushman Lab. Bulimina tuxpamensis Cole. Cushman and Parker, 1947, U.S. Foram. Research Spec. Pub. 9, p. 133, pi. 17, figs. 11-19. Geol. Survey Prof. Paper 210-D, p. 101, pi. 24, fig. 6. E. O R. Bulimina sp. O. Bolivina aff. -B. tricosta Cushman and Bermudez. Cushman, Triangular, small (0.2 mm). 1937, Cushman Lab. Foram. Research Spec. Pub. 9, p. 57, Buliminella milletti Cushman. Cushman, 1942, U.S. Natl. Mus. pi. 7, fig. 11. O. (PL 5, fig. 12.) Bull. 161, pt. 3, p. 7, pi. 3, figs. 1-4. R. Bolivina tumida Cushman. Cushman, 1937, Cushman Lab. Buliminella septata Keyzer. Todd, 1957, U.S. Geol. Survey Foram. Research Spec. Pub. 9, p. 99, pi. 10. fig. 21. O. Prof. Paper 280-H, p. 298, pi. 73, fig. 3; pi. 75, figs. 27-29. Bolivina vioksburgensis (Howe). [Not Bolivina vicksbur- MO. gensis Cushman, 1922, which is now Bifarina.] Pleuro- Buliminoides williamsoniana (Brady). Bulimina williamson- stomella vicksburgensis Howe, 1930. Jour. Paleontology, iana Brady, 1884, Challenger Rept., Zoology, v. 9, p. 408, V. 4, p. 331, pi. 27, fig. '5. O. (PI. 5, fig. 14.) pi. 51, figs. 16, 17. R. Bolivina zanzibarica Cushman, 1937, Cushman Lab. Foram. R£- Calcarina spengleri (Gmelin). Todd, 1960, Tohoku Univ. Sci. search Spec. Pub. 9, p. 151, pi. 22, figs. 25, 26. R. Repts., 2d ser. (Geology), spec. v. 4, p. 101, pi. 10, figs. 1, BoUvina sp. A. O. 3-5. R. Straight, oblique, and flush sutures; smooth wall. Cancris sagra (d'Orbigny). Cushman and Todd, 1942, Cush Bolivina sp. B. O. (PL 5, fig. 19.) man Lab. Foram. Research Contr., v. 18, p. 77, pi. 19, Straight, oblique, and depressed sutures; rugose wall. figs. 3-7. R. (PL 19, fig. 2.) Bolivina (Loxostomum) limbata Brady, 1884, Challenger Rept., Carpenteria hamiltonensis Glaessner and Wade?, 1959, Micro- Zoology, v. 9, p. 419, pi. 52, figs. 26-28. R. paleontology, v. 5, p. 200, pi. 1, figs. 9-11; pi. 3, figs. 1, Bolivina (Loxostomum) limbata var. costulata Custiman. Loxo 2. E. stoma limbatum (H. B. Brady) var. costulatum (Cush Carpenteria proteiformis Goes. Brady, 1884, Challenger Rept., man). Cushman, 1937, Cushman Lab. Foram. Research Zoology, v. 9, p. 679, pi. 97, figs. 8-14. R. Spec. Pub. 9, p. 187, pi. 21, figs. 30, 31. R. Carterina spiculotesta (Carter). Loeblich and Tappan, 1955, Bolivina (Loxostomum) mayori Cushman. Loxostoma mayori Smithsonian Misc. Colln., v. 128, no. 5, p. 37, pi. 4, figs. (Cushman). Cushman, 1937, Cushman Lab. Foram. Re 9, 10. R. search Spec. Pub. 9, p. 195, pi. 22, figs. 16-21. R. Cassidulina aff. C. angulosa Cushman. Todd, 1965, U.S. Natl. Bolivina (Loxostomum) porrecta Brady. Loxostoma porrectum Mus. Bull. 161, pt. 4, p. 40, pi. 17, fig. 2. M. (PL 13, (H. B. Brady). Cushman, 1937, Cushman Lab. Foram. fig. 2.) Research Spec. Pub. 9, p. 190, pi. 22, figs. 7-10. R. Cassidulina carandelli Colom, 1943, Real Soc. espanola hist. Bolivina (Loxostomum) rostra (Cushman). Loxostoma ros nat. BoL, v. 41, p. 324, pi. 23, figs. 65-67. M. (PL 13, trum Cushman. Cushman, 1937, Cushman Lab. Foram. fig. 4.) Research Spec. Pub. 9, p. 195, pi. 22, fig. 34. O. (PL 5, Cassidulina carapitana Hedberg, 1937, Jour. Paleontology, v. 11, fig. 11.) p. 680, pi. 92, fig. 6. M. Bolivinella folium (Parker and Jones). Cushman, 1942, U.S. Cassidulina delicata Cushman. Todd, 1965, U.S. Natl. Mus. Natl. Mus. Bull. 161, pt. 3, p. 3, pi. 2, figs. 1-4, 6. R. Bull. 161, pt. 4, p. 42, pi. 17, figs. 6, 7. MR. (PL 18, Bolivinopsis cubensis (Cushman and Bermudez). Spiro- fig. 10.) plectoides cubensis Cushman and Bermudez, 1937, Cush Cassidulina minuta Cushman. Todd, 1965, U.S. Natl. Mus. Bull. 161, pt. 4, p. 43, pi. 17, fig. 3. MR. (PL 18, fig. 9.) man Lab. Foram. Research Contr., v. 13, p. 13, pi. 1, Cassidulina pacifica Cushman, 1925, Cushman Lab. Foram. Re figs. 44, 45. O. (PL 4, fig. 1.) search Contr., v. 1, pt. 3, p. 53, pi. 9, figs. 14-16. M. (PL Borelis pulchrus (d'Orbigny). Cushman, 1930, U.S. Natl. Mus. 13, fig. 6.) Bull. 104, pt. 7, p. 55, pi. 15, figs. 9,10. R. Cassidulina sagamiensis Asano and Nakamura, 1937, Japanese Bronnimannia haliotis (Heron-Alien and Earland). Todd, 1965, Jour. Geology and Geography, v. 14, nos. 2, 3, p. 147, pi. 14, U.S. Natl. Mus. Bull. 161, pt. 4, p. 27, pi. 5, fig. 2. R. fig. 5. M. (PL 13, fig. 1.) (PI. 19, fig. 3.) Caszidulina subglobosa Brady. Todd, 1965, U.S. Natl. Mus. Bull. Bulimina aguafrescaensis Todd and Kniker, 1952, Cushman 161, pt. 4, p. 45, pi. 16, fig. 7. OMR. (PL 13, fig. 3.) Found. Foram. Research, Spec. Pub. 1, p. 22, pi. 4, fig. 5. Cassidulina subtumida Cushman. Todd, 1965, U.S. Natl. Mus. M. Bull. 161, pt. 4, p. 45, pi. 16, figs. 5, 6; pi. 17, fig. 1. M. Bulimina alasanensis Cushman. Cushman and Parker, 1947, Cassidulina tricamerata Galloway and Heminway, 1941, New U.S. Geol. Survey Prof. Paper 210-D, p. 103, pi. 24, figs. York Acad. Sci., Sci. Survey of Porto Rico and Virgin 14-16. O. (PL 5, fig. 3.) Islands, v. 3, pt. 4, p. 425, pi. 32, fig. 3. O. (PL 7, fig. 1.) Bulimina bleeckeri Hedberg, 1937, Jour. Paleontology, v. 11, Cassidulina nov. sp. of Germeraad, 1946, in Rutten and Hotz, p. 675, pi. 91, figs. 12, 13. O. (PL 5, figs. 1, 2.) Geol. Petrol, and Paleont. Results of Explorations in the Bulimina costata d'Orbigny. Cushman and Parker, 1947, U.S. island of Ceram, ser. 3, Geol., no. 2, p. 72, pi. 4, figs. 11, Geol. Survey Prof. Paper 210-D, p. 115, pi. 27, figs. 2, 3. 12. M. R. Cassidulina sp. E of Todd, 1957, U.S. Geol. Survey Prof. Paper Bulimina orata d'Orbigny. Cushman and Parker, 1947, U.S. 280-H, p. 298, pi. 77, fig. 9. M. Geol. Survey Prof. Paper 210-D, p. 106, pi. 25, figs. 8, Cassidulina sp. A. O. 9. O. Globular. 126 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS Cassidulina sp. B. O. Cibicides tuxpamensis Cole, 1928, Bull. Am. Paleontology, v. 14, Flattened, four-chambered. no. '53, p. 219 (19), pi. 1, figs. 2, 3; pi. 3, figs. 5, 6. E. Cassidulina sp. C. O. Cibicidina danvillensis (Howe and Wallace) ? Cibicides Angled. danvillensis Howe and Wallace, 1932, Louisiana Geol. Cassidulina'! sp. D. [Possibly related to the lower Miocene Bull. 2, p. 77, pi. 14, fig. 5. O. genus Pseudocassidulinoides (de Klasz and Rerat, 1963, Clavulina difformis Brady. Graham and Militante, 1959, Stan p. 78).] O. ford Univ. Pub., Geol. Sci., v. 6, no. 2, p. 31, pi. 2, fig. Elongate globular with proportionally large aperture. 16. R. (PI. 17, fig. 3.) Caucasina grata (Parker and Bermudez). Buliminella grata Conicospirillina semiinvoluta Cushman. Cushman, Todd, and Parker and Bermudez, 1937, Jour. Paleontology, v. 11, Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 357, p. 515, pi. 59, fig. 6. O. (PI. 4, fig. 9.) pi. 88, fig. 38. R. Chilostomella cyclostoma Rzehak, 1888, Annalen K. K. Naturh. Cornuspira planorbis Schultze. Cushman, Todd, and Post, 1954, Hofmuseums, Wien, v. 3, p. 258, pi. 11, fig. 1. O. (PI. 6, U.S. Geol. Survey Prof. Paper 260-H, p. 341, pi. 85, fig. 10.) fig. 27. R. Chrysalidinella earlandi Oushman. 1945, Cushman Lab. Foram. Cycloclypeus carpenteri Brady. Cushman, Todd, and Post, 1954. Research Contr., v. 21, p. 53, pi. 8, fig. 23. R. U.S. Geol. Survey Prof. Paper 260-H, p. 347, pi. 82, fig. 9. Chrysalogonium ciperense Cushman and Stainforth?, 1945, Cush R. (PI. 17, fig. 1.) man Lab. Foram. Research Spec. Pub. 14, p. 26, pi. 3, Cycloloculina cubensis Cushman and Bermudez, 1936, Cushman fig. 31. O. Lab. Foram. Research Contr., v. 12, p. 61, pi. 11, figs. 15, Chrysaloffonium lanceolum Cushman and Jarvis, 1934, Cush 16. O. (PI. 7, fig. 6.) man Lab. Foram. Research Contr., v. 10, p. 75, pi. 10, Cymbaloporella tabellaeformis (Brady). Graham and Mili fig. 16. O. (PL 4, fig. 7.) tante, 1959, Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, Chrysalogonium longicostatum Cushman and Jarvis, 1934, Cush p. 107, pi. 18, fig. 1. R. man Lab. Foram. Research Contr., v. 10, p. 74, pi. 10, Cymbaloporetta bradyi (Cushman). Graham and Militante, fig. 12. EO. 1959, Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, p. 108, Chrysalogonium tenuicostatum Cushman and Bermudez, 1936, pi. 18, fig. 2. R. Cushman Lab. Foram. Research Contr., v. 12, p. 27, pi. 5, Cymbaloporetta squammosa (d'Orbigny). Graham and Mili figs. 3-5. O. tante, 1959, Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, Chrysalogonium sp. O. p. 108, pi. 18, fig. 3. R. Smooth walled. Darbyella&p- R. (PI. 18, fig. 3.) Cibicidella variaMlis (d'Orbigny). Cushman, Todd, and Post, The illustrated specimen exhibits a combination of 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 372, pi. 82, structural features not normally found within a single fig. 13. R. specimen. The specimen starts out as a close-coiled Cibicides brevoralis Carter, 1958, Victoria Geol. Survey Bull. 55, Robulus, involute on both sides, consisting of about eight p. 47, pi. 6, figs. 54-56. O. chambers and having slightly raised limbate curved Cibicides carinatus (Terquem). LeCalvez, 1949, Revision des sutures. In its later development, the specimen becomes Foraminiferes Lutetiens du Bassin de Paris, II. Ro- progressively more evolute on one side only, and the taliidae et Families Affines, p. 45, pi. 4, figs. 72-74. O. sutures lose their limbation and become slightly depressed. (PI. 7, fig. 4.) The most unique feature seems to be the lack of a radiate Cibicides cicatricosus (Schwager). Cushman, Todd, and Post, aperture that is so characteristic of most of the genera 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 371, pi. 91, in the family Lagenidae. The present specimen clearly figs. 25, 26. MR. shows the slit aperture described in the type species of Cibicides floridanus (Cushman). Truncatulina floridana Cush Darbyella. Moreover, through the clear glassy keel it man, 1918, U.S. Geol. Survey Bull. 676, p. 62, pi. 19, fig. can be seen that each previous aperture consisted of a 2. EO. median slit rather than a series of radial slits, as in Cibicides havanensis Cushman and Bermudez, 1937, Cushman Robulus or Lenticulina. Only a single specimen was Lab. Foram. Research Contr., v. 13, p. 28, pi. 3, figs. 1-3. found. EO. (PL 7, fig. 5.) Dentalina oommunis d'Orbigny. Nodosaria (D.) communi* Cibicides lobatulus (Walker and Jacob). Todd, 1965, U.S. d'Orbigny, Brady, 1884, Challenger Rept, Zoology, v. 9, Natl. Mus. Bull. 161, pt. 4, p. 52, pi. 22, fig. 1. OMR. p. 504, pi. 62, figs. 19-22. M. (PI. 12, fig. 1.) Cibicides tnacrocepJialus (Giimbel). Todd and Low, 1960, U.S. Dentalina cooperensis Cushman, 1933, Cushman Lab. Foram. Geol. Survey Prof. Paper 260-X, p. 852, pi. 258, fig. 4. E. Research Contr., v. 9, p. 8, pi. 1, fig. 17. O. Cibicides mauori (Cushman). Cushman, Todd, and Post, 1954, Dentalina mucronata Neugeboren, 1856, Denkschr. Akad. Wiss. U.S. Geol. Survey Prof. Paper 260-H, p. 371, pi. 91, figs. Wien, v. 12, p. 83, pi. 3, figs. 8-11. R. 29, 30. R. Dentalina taurieornis (Schwager). Nodosaria tauricornte Cibicides praecursorius (Schwager). Discorbina praeoursoria Schwager, 1866, Novara Exped., Geol. Theil, v. 2, p. 228, Schwager, 1883, Palaeontographica, v. 30, p. 125, pi. 27 pi. 6, fig. 61. M. (4), fig. 12. O. (PI. 7, fig. 7.) Dentalina sp. A. M. (PL 12, fig. 7.) Cibicides pseudoungerianus (Cushman). Truncatulina pseudo- Costa te. unfferiana Cushman, 1922, U.S. Geol. Survey Prof. Paper Dentalina sp. B. O. 129-E, p. 97, pi. 20, fig. 9. Truncatulina ungeriana Slender. d'Orbigny, sp. Brady, 1884, Challenger Rept., Zoology, Dentalina sp. C. O. v. 9, p. 664, pi. 94, fig. 9. OMR. Slender with broad dark sutures. SMALLER FORAMINIFERA FROM GUAM 127 Dentalina sp. D. O. Epistominella cf. E. obtusa (Burrows and Holland). Cushman, Lobulate. Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper Dentalinal spp. EM. 260-H, p. 365, pi. 90, fig. 19. R. Discorbis balcombensis Chapman, Parr, and Coiling. Todd and Epistominella rugosa ( Phleger and Parker). Pseudoparrella ( ?) Low, 1960, U.S. Geol. Survey Prof. Paper 260-X, p. 838, rugosa Phleger and Parker, 1951, Geol. Soc. America pi. 262, fig. 7. O. Mem. 46, pt. 2, p. 28, pi. 15, figs. 8, 9. R. Eggerella bradyi (Cushman). Cushman, 1937, Cushman Lab. Epistominella tubulifera (Heron-Alien and Earland). Cush Foram. Research, Spec. Pub. 8, p. 52, pi. 5, fig. 19. M. man, Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper Ehrenbergina albatrossi Cushman. Todd, 1965, U.S. Natl. Mus. 260-H, p. 365, pi. 90, fig. 20. R. Bull. 161, pt. 4, p. 47, pi. 21, figs. 2, 3. M. (PI. 15, fig. 2.) Eponides duprei ciervoensis Cushman and Simonson. Todd and Ellipsoglandulina labiata (Sehwager). Glandulina labiata Low, 1960, U.S. Geol. Survey Prof. Paper 260-X, p. 838, Schwager, 1866, Novara Exped., Geol. Theil, v. 2, p. 237, pi. 260, fig. 7. O. (PI. 6, fig. 7.) pi. 6, fig. 77. EO. Eponides kiliani (Andreae). Pulvinulina kiliani Andreae, 1884, Ellipsopleurostomella sp. M. (PI. 12, fig. 16.) Abh. Geol. Spec.-Karte Elsass-Lothringen, v. 2, pt. 3, p. Only one complete, one incomplete (see pi. 12, fig. 16), 163, pi. 11, fig. 1. O. and three fragmentary pieces represent what is probably Eponides ocalanus Cushman. Todd and Low, 1960, U.S. Geol. an undescribed species in this genus. The species is Survey Prof. Paper 260-X, p. 838, pi. 256, fig. 7. E. cylindrical and elongate, about 0.9 mm in length and Eponides repandus (Fichtel and Moll). Resig, 1962, Cushman 0.2-0.3 mm in diameter, and the sutures show no inden Found. Foram. Research Contr., v. 13, p. 55, pi. 14, figs. tation on the surface. The initial end is bluntly pointed 1-9. R. (PI. 19, fig. 5.) and tapering. The apertural end is rounded, and the Eponides sp. O. (PI. 6, fig. 1.) aperture is crescent shaped, having the wall on the con A compact tightly coiled form, having seven chambers cave side of the crescent outline slightly raised above in the final whorl. the wall on the convex side. The broken side of the wall Fissurina alveolata (Brady). Lagena alveolata Brady, 1884, in the illustrated specimen permits a view of the internal Challenger Rept., Zoology, v. 9, p. 487, pi. 60, figs. 30, tube that connects the previous apertures. Most of the 32. M. sutures are only faintly visible, but it can be seen the Fissurina circulum Seguenza, 1862, Descrizione dei Foraminiferi several latest sutures are not equatorial but are curving Monotalamici delle Marne Mioceniche del Distretto di and oblique to the axis of the test. This undescribed Messina, p. 63, pi. 2, fig. 15. M. (PI. 12, fig. 9.) species is probably related to Ellipsopleurostomella Fissurina flmbriata (Brady). Lagena flmbriata Brady, 1884, stewarti Cushman and Siegfus from the Eocene and Challenger Rept., Zoology, v. 9, p. 486, pi. 60, figs. 26-28. Oligocene Kreyenhagen Shale of California, but it is O. (PI. 4, fig. 8.) considerably slenderer and more elongate. Fissurina formosa (Schwager). Lagena formosa Schwager, Elphidium advenum (Cushman). Cushman, Todd, and Post, 1866, Novara Exped., Geol. Theil, v. 2, p. 206, pi. 4, fig. 19. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 345, pi. 86, M, (PI. 12, fig. 10.) fig. 30. R. Fissurina globosa Bornemann, 1855, Deutsche Geol. Gesell. Elphidium crispum (Linne). Graham and Militante, 1959, Zeitschr., v. 7, p. 317, pi. 12, fig. 4. M. Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, p. 74, pi. 11, Fissurina lagenoides (Williamson). Entosolenia marginata fig. 13. R. Montague var. lagenoides Williamson, 1858, On the Recent Elphidium hyalocostatum Todd, 1957, U.S. Geol. Survey Prof. Foraminifera of Great Britain, p. 11, pi. 1, figs. 25, 26. O. Paper 280-H, p. 300, pi. 88, fig. 19. R. (PI. 18, fig. 11.) Fissurina spp. O. Elphidium jenseni (Cushrnan). Cushman, Todd, and Post, 1954, Unornamented forms; one is nearly circular and has U.S. Geol. Survey Prof. Paper 260-H, p. 346, pi. 86, a keel; another has a thickened peripheral band and a fig. 32. R. protruding apertural end. Elphidium simplex Cushman. Cushman, Todd, and Post, 1954, Flintina, bradyana Gushman, 1921, U.S. Natl. Mus. Bull. 100, U.S. Geol. Survey Prof. Paper 260-H, p. 346, pi. 86, fig. v. 4, p. 467, pi. 94, fig. 2; text figs. 38-44. R. (PL 17, 33. R. fig. 5.) Elphidium striatopunctatum (Fichtel and Moll). Todd, 1957, Frondicularia robusta Brady var. repanda Cushman, 1913, U.S. U.S. Geol. Survey Prof. Paper 280-H, p. 288 (table 4), Natl. Mus. Bull. 71, pt. 3, p. 83, pi. 29, figs. 1, 2. R. pi. 88, fig. 21. R. (PL 18, fig. 2.) Elphidium spp. OM. Gaudryina triangularis angulata Cushman. Cushman, Todd, Enarttiomorphina sp. O. and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, A short arched fusiform specimen having indistinct, p. 331, pi. 83, fig. 14. R. nonindented sutures that are horizontal on the convex Gaudryina trullissata Todd, in Cushman, Todd, and Post, 1954, side but make an upside-down-V-pattern on the concave U.S. Geol. Survey Prof. Paper 260-H, p. 331, pi. 83, fig. side (referring to the arched axis). In shape the specimen 15. R. resembles Nodosarella acus Cushman and Bermudez, but Gaudryina (Siphogaudryina) rugulosa Cushman. Oushman, its radiate aperture and its suture pattern remove it Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, from that species. p. 331, pi. 82, fig. 1. R. Epistomaroides polystomelloidcs (Parker and Jones). Gush- Gaudryina (Siphogaudryina) siphonifera (Brady). Cushman, man, Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 360, pi. 89, fig. 26. R. 260-H, p. 331, pi. 83, fig. 17. R. 128 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS Gaudryina (Siphogaudryina) transversaria (Brady). Cush Laticarinina pauperata (Parker and Jones). Cushman and man, Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper Todd, 1942, Cushman Lab. Foram. Research Contr., v. 18, 260-H, p. 331, pi. 83, fig. 16. R. p. 15, pi. 4, figs. 1-6. M. Gavelinopsis praegeri (Heron-Alien and Earland). Todd, 1965, Liebusella bradyi (Cushman). Cushman, 1937, Cushman Lab. U.S. Natl. Mus. Bull. 161, pt. 4, p. 18, pi. 8, fig. 1. R. Foram. Research Spec. Pub. 8, p. 169, pi. 20, fig. 22. R. Gypsina globula (Reuss). Cushman, Todd, and Post, 1954, U.S. Marginopora vertebralis Blainville. Cushman, Todd, and Post, Geol. Survey Prof. Paper 260-H, p. 373, pi. 91, fig. 39. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 348, pi. 82, ER. figs. 5, 6. R. Gypsina vesicularis (Parker and Jones). Cushman, Todd, and Marginulina costata (Batsch). Brady, 1884, Challenger Rept., Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 373, Zoology, v. 9, p. 528, pi. 65, figs. 10-13. R. pi. 82, fig. 12. R. Marginulina glabra d'Orbigny. Christodoulou, 1960, Palaeon- Gyroidina girardana (Reuss). Rotalina girardana Reuss, 1851, tographica, sec. A, v. 115, pts. 1-6, p. 68, pi. 5, fig. 35. O. Deutsche Geol. Gesell. Zeitschr., v. 3, p. 73, pi. 5, fig. 34. Massilina durrandi (Millett). " Miliolina durrandi Millett, 1898, O. (PI. 6, fig. 9.) Royal Micros. Soc. Jour., p. 268, pi. 6, figs. 7-10. R. Gyroidina lamarckiana (d'Orbigny). Todd, 1965, U.S. Natl. Massilina secans (d'Orbigny). Miliolina secans d'Orbigny, sp., Mus. Bull. 161, pt. 4, p. 19, pi. 6, fig. 3. O?M. Brady, 1884, Challenger 'Rept., Zoology, v. 9, p. 167, pi. 6, Gyroidina nitidula (Sehwager). Rotalia nitidula Sehwager, figs. 1, 2. R. 1866, Novara Exped., Geol. Theil, v. 2, p. 263, pi. 7, fig. Massilina secans reticulata Heron-Alien and Earland, 1915, 110. EO. Zool. Soc. London Trans., v. 20, p. 582, pi. 45, figs. Gyroidina soldanii d'Orbigny. Todd, 1965, U.S. Natl. Mus. Bull. 1-4. R. 161, pt. 4, p. 19, pi. 6, fig. 4. M. Miliolinella australis (Parr). Cushman, Todd, and Post, 1954, Haddonia torresiensis Chapman. Todd and Low, 1960, U.S. U.S. Geol. Survey Prof. Paper 260-H, p. 334, pi. 84, figs. Geol. Survey Prof. Paper 260-X, p. 827, pi. 261, fig. 16. R. 3,4. R. Halkyardia bikiniensis Cole, 1954, U.S. Geol. Survey Prof. Miliolinella labiosa (d'Orbigny). Trilooulinella labiosa (d'Or Paper 260-O, p. '584, pi. 210, figs. 1-5. EO. bigny). Cushman, Todd, and Post, 1954, U.S. Geol. Sur Hauerina diversa Cushman. Cushman, Todd, and Post, 1954, vey Prof. Paper 260-H, p. 334, pi. 84, figs. 5, 6. R. U.S. Geol. Survey Prof. Paper 260-H, p. 337, pi. 84, figs. Miliolinella oceanica (Cushman). Triloculina oceanioa Cush 30, 31. R. man, 1932, U.S. Natl. Mus. Bull. 161, pt. 1, p. 54, pi. 12, Hauerina involuta Cushman. Cushman, Todd, and Post, 1954, fig. 3. R. U.S. Geol. Survey Prof. Paper 260-H, p. 337, pi. 84, figs. Miliolinella oceanica var. flintiana (Oushman). Triloculina, 28, 29. R. oceanica Cushman var. flintiana Cushman, 1932, U.S. Hauerina milletti Cushman, 1954, in Cushman, Todd, and Post, Natl. Mus. Bull. 161, pt. 1, p. 55, pi. 12, fig. 4. R. U.S. Geol. Survey Prof. Paper 260-H, p. 337, pi. 84, fig. Neoconorbina celsa (Todd). Disoorbis celsa Todd, 1957, U.S. 23. R. Geol. Survey Prof. Paper 280-H, p. 299, pi. 67, fig. 20. O. Hauerina pad flea Cushman, 1917, U.S. Natl. Mus. Bull. 71, pt. 6, Neoconorbina crustata (Cushman). Todd, 1965, U.S. Natl. Mus. p. 64, pi. 21, fig. 2. R. Bull. 161, pt. 4, p. 15, pi. 2, figs. 2, 3. R. (PI. 18, fig. 12.) Heterostegina suborbicularis d'Orbigny. Cushman, Todd, and Neoconorbina fulva (Todd). Discorbis fulva Todd, 1957, U.S. Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 346, Geol. Survey Prof. Paper 280-H, p. 299, pi. 90, fig. 8. R. pi. 82, figs. 7, 8; pi. 87, fig. 2. R. Neoconorbina patelliformis (Brady). Todd, 1965, U.S. Natl. Hoeglundina elegans (d'Orbigny). Epistomina elegans (d'Or Mus. Bull. 161, pt. 4, p. 16, pi. 2, fig. 1. R. bigny), Cushman, 1931, U.S. Natl. Mus. Bull. 104, pt. 8, Neoconorbina tabemacularis (Brady). Disoorbina taberna- p. 65, pi. 13, fig. 6. R. cularis Brady, 1884, Challenger Rept., Zoology, v. 9, p. 648, Homotrema rubrum (Lamarck). Cushman, Todd, and Post, pi. 89, figs. 5-7. R. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 373, pi. 82, Neoconorbina terquemi (Rzehak). Todd, 1965, U.S. Natl. Mus. fig. 17; pi. 92, fig. 8; pi. 93, fig. 2. R. Bull. 161, pt. 4, p. 16, pi. 5, fig. 6. R, Karreriella bradyi (Cushman). Cushman, 1937, Cushman Lab. Neoconorbina tuberocapitata (Chapman). Todd, 1965, U.S. Foram. Research Spec. Pub. 8, p. 135, pi. 16, figs. 6-11. Natl. Mus. Bull. 161, pt. 4, p. 17, pi. 1, figs. 8, 9. R. M. (PI. 12, fig. 8.) Neorotalia floscula (Todd and Post). Rotalia floscula Todd Karreriella chilostoma (Reuss). Cushman, 1937, Cushman Lab. and Post, 1954, U.S. Geol. Survey Prof. Paper 260-N, Foram. Research Spec. Pub. 8, p. 126, pi. 15, figs. 1-8. O. p. 561, pi. 200, fig. 5. E. Karreriella sp. O. Nodosarella aff. N. acus Cushman and Bermudez, 1937, Cush A rough-walled specimen having a prominent initial man Lab. Foram. Research Contr., v. 13, p. 19, pi. 2, stage and later chambers not as overlapping as in figs. 10, 11. O. Karreriella chilostoma (Reuss) but somewhat separated Nodosarella robusta Cushman, 1943, Cushman Lab. Foram. Re by depressed sutures. The aperture, although somewhat search Contr., v. 19, p. 92, pi. 16, fig. 8. O. Nodosarella subcylindrica Cushman, 1943, Cushman Lab. Foram. obscured by matrix, appears to be surrounded by a rather Research Contr., v. 19, p. 91, pi. 16, figs. 4, '5. O. high sharp rim. Nodosaria afflnis Reuss? Todd and Low, 1960, U.S. Geol. Sur Lagena gradlis Williamson. Cushman, Todd, and Post, 1954, vey Prof. Paper 260-X, p. 828, pi. 255, fig. 10. E. U.S. Geol. Survey Prof. Paper 260-H, p. 344, pi. 86, Nodosaria calomorpha Reuss. Brady, 1884, Challenger Rept.. fig. 18. M. Zoology, v. 9, p. 497, pi. 61, figs. 23-27. R. PI. 18, fig. 4. Lagenonodosaria soalaris (Batsch). Asano, 1956, Tohoku Univ. Nodosaria consobrina (d'Orbigny). Dentalina consobrina Sci. Repts., 2d ser. (Geology), v. 27, p. 26, pi. 6, figs. d'Orbigny, 1846, Foraminiferes fossiles du bassin terti- 5-7, 10. R. aire de Vienne, p. 46, pi. 2, figs. 1-3. O. SMALLER FORAMINIFERA FROM GUAM 129 Nodosaria equisetiformis Schwager, 1866, Novara Exped., Geol. row flaring lip. Length as much as 0.5 mm; diameter Theil, v. 2, p. 231, pi. 6, fig. 66. M. (PI. 12, fig. 6.) 0.1 mm. Nodosaria insecta Schwager, 1866, Novara Exped., Geol. Theil, Holotype, USNM 642256, from Miocene (Tertiary g) v. 2, p. 224, pi. 5, figs. 53, 54. M. beds of the Janum Formation at Lujuna Point, northeast Nodosaria lo-ngiscata d'Orbigny, 1846, Foraminiferes fossiles du coast of Guam, USGSf25805 (Rrl5-l). bassin tertiaire de Vienne, p. 32, pi. 1, figs. 10-12. O. This small and delicate species was found in only one Nodosaria skobina Schwager, 1866, Novara Exped., Geol. Theil, sample of the Miocene. In the Eocene and Oligocene of v. 2, p. 225, pi. 5, fig. 56. M. Guam, a similar, possibly related, form is found. It Nodosaria aff. N. tosta Schwager, 1866, Novara Exped., Geol. differs mainly by being more tapering, by having a pointed Theil, v. 2, p. 219, pi. 5, fig. 42. O. not blunt initial end, by consisting of two or three more Nodosaria vertebralis (Batsch). Brady, 1884, Challenger Repts., chambers, and by having a shorter apertural neck. These Zoology, v. 9, p. 514, pi. 63, fig. 35; pi. 64, figs. 11-14. O. specimens are probably not identical with but are possibly Nonion boueanum (d'Orbigny). Cushman, 1939, U.S. Geol. related to or ancestral to Orthomorphina parvula. Survey Prof. Paper 191, p. 12, pi. 3, figs. 7, 8. R. Orthomorphina perversa (Schwager). Nodosaria perversa Nonion japonicum Asano, 1938, Geol. Soc. Japan Jour., v. 45, Schwager, 1866, Novara Exped., Geol. Theil, v. 2, p. 212, no. 538, p. 593, pi. 15 (4), figs. 1, 2. R. pi. 5, fig. 29. M. (PI. 12, fig. 5.) Nonion maoricum (Stache). Rosalina maorica Stache, 1864, Orthomorphina rohri (Cushman and Stainforth). Nodogenerina Novara Exped., Geol. Theil, v. 1, sec. 2, p. 282, pi. 24, rohri Cushman and Stainforth, 1945, Cushman Lab. fig. 32. EO. (PI. 6, fig. 8.) Foram. Research Spec. Pub. 14, p. 39, pi. 5, fig. 26. E. Nonion micrum Cole, 1927, Bull. Am. Paleontology, v. 14, no. 51, Osangularia culter (Parker and Jones). Todd, 1965, U.S. Natl. p. 22, pi. 5, fig. 12. O. Mus. Bull. 161, pt. 4, p. 25, pi. 15, fig. 1. EOM. (PL 13, Nonion pacificum (Cushman). Cushman, 1939, U.S. Geol. Sur fig. 7.) vey Prof. Paper 191, p. 25, pi. 6, fig. 25. R. Pararotalia byramensis (Cushman). Todd and Low, 1960, U.S. Nonion pompilioides (Fichtel and Moll). Cushman, 1939, U.S. Geol. Survey Prof. Paper 260-X, p. 839, pi. 262, figs. 11, Geol. Survey Prof. Paper 191, p. 19, pi. 5, figs. 9-12. M. 12. O. (PI. 7, fig. 2.) "Nonionella" minutissima Todd, 1952, U.S. Geol. Survey Prof. Parrina bradyi (Millett). Cushman, Todd, and Post, 1954, U.S. Paper 241, p. 24, pi. 3, fig. 30. O. Geol. Survey Prof. Paper 260-H, p. 342, pi. 85, figs. SI- Nonionella sp. OM. 34. R. A small (0.23 mm) compressed form, having nine Patellina advena var. altiformis Cushman. Cushman, Todd, and chambers in the final whorl. Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 357, Ntibeculina divaricata (Brady). Cushman, 1932, U.S. Natl. Mus. pi. 89, fig. 1. R. Bull. 161, pt. 1, p. 48, pi. 11, figs. 5, 6. R. Paumotua terebra (Cushman). Cushman, Todd, and Post, 1954, Nitbeculina divaricata advena Cushman. Cushman, 1932, U.S. U.S. Geol. Survey Prof. Paper 260-H, p. 361, pi. 89, fig. Natl. Mus. Bull. 161, pt. 1, p. 49, pi. 11, fig. 8. R. (PI. 28. R. 17, fig. 2.) Pegidia dubia (d'Orbigny). Todd, 1965, U.S. Natl. Mus. Bull. Nuttallides trumpyi (Nuttall). Belford, 1958, Cushman Found. 161, pt. 4, p. 32, pi. 18, fig. 5. R. (PI. 19, fig. 1.) Foram. Research Contr., v. 9, p. 94, pi. 18, figs. 1-13; Peneroplis ellipticus d'Orbigny. Todd, 1957, U.S. Geol. Survey text figs. 1-3. E. (PI. 1, fig. 4.) Prof. Paper 280-H, p. 288 (table 4), pi. 89, fig. 1. R. OoHna squamosa catenulata ( Williamson). Entosolenia squa- Peneroplis proteus d'Orbigny. Todd, 1957, U.S. Geol. Survey mosa var. catenulata Williamson, 1848, Annals and Mag. Prof. Paper 280-H, p. 288 (table 4), pi. 93, fig. 4. R. Nat. History, ser. 2, v. 1, p. 19, pi. 2, fig. 20. O. Placopsilina"! sp. Todd, 1962, U.S. Geol. Survey Prof. Paper Oolina n. sp. aff. 0. gibbera (Buchner). Lagena gibbera Buch- 354-H, 1961, p. 187, pi. 22, figs. 3, 4; pi. 25, fig. 5d. R. ner, 1940, Nova Acta Leopoldina, Deutschen Akad. Naturf., (PI. 17, fig. 1.) neue Folge, v. 9, no. 62, p. 423, pi. 3, figs. 48-50. O. (PI. Planispirinella exigua (Brady). Cushman, Todd, and Post, 4, fig. 12.) 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 341, pi. 85, Operculina ammonoides (Gronovius). Cushman, Todd, and fig. 28. R. Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 346, Planodiscorbis rarescens (Brady). Discorbina rarescens Brady, pi. 87, fig. 1. R. 1884, Challenger Repts., Zoology, v. 9, p. 651, pi. 90, figs. Oridorsalis umbonatus (Reuss). Todd, 1965, U.S. Natl. Mus. 2, 3. R. Bull. 161, pt. 4, p. 23, pi. 6, fig. 2. EOM. (PI. 6, fig. 5; Planorbulina acervalis Brady. Cushman, Todd, and Post, 1954, pi. 13, fig. 5.) U.S. Geol. Survey Prof. Paper 260-H, p. 372, pi. 82, fig. 14 ; Orthomorphina fijiensis (Cushman). Siphonodosaria fijiensis pi. 91, figs. 34-36. R. Cushman, 1931, Cushman Lab. Foram. Research Contr., Planorbulinella larvata (Parker and Jones). Graham and v. 7, p. 30, pi. 4, fig. 10. M. (PI. 12, fig. 2.) Militante, 1959, Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, p. 118, pi. 19, fig. 17. OR. Orthomorphina parvula Todd, n. sp. EOM. (PI. 12, fig. 4.) Planorbulinoides retinaculatus (Parker and Jones). Todd and Test small for the genus, uniserial, straight, cylindrical, Low, 1960, U.S. Geol. Survey Prof. Paper 260-X, p. 853, circular in transverse section, bluntly rounded at the pi. 262, fig. 5; pi. 263, fig. 10. R. initial end, produced into a slender neck at the opposite Planulina wuellerstorfi (Schwager). Anomalina ^vuellerstorfi end; chambers few, about six, slightly inflated, over Schwager, 1866, Novara Exped., Geol. Theil, v. 2, p. 258, lapping each previous one as added, increasing only pi. 7, figs. 105, 107. OM. slightly in size as added; sutures distinct, slightly de Pleurostomella alternans Schwager, 1866, Novara Exped., Geol. pressed ; wall smooth, unornamented; aperture terminal, Theil, v. 2, p. 238, pi. 6, figs. 79, 80. M. (PI. 12, figs. circular, at the end of a long neck, surrounded by a nar 14, 15.) 797-972 130 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS Pleurostomella Merigi Palmer and Bermudez, 1936, Soc. cubana Quinqueloculina ferussaci d'Orbigny. Fornasini, 1900, Accad. hist. nat. Mem., v. 10, no. 5, p. 294, pi. 17, figs. 7, 8. O. Sci. 1st. Bologna Mem., ser. 5, v. 8, p. 9, fig. 8. R. Pleurostomella brevis Schwager, 1866, Novara Exped., Geol. Quinqueloculina lamarckiana d'Orbigny, 1839, Foraminiferes, Theil, v. 2, p. 239, pi. 6, fig. 81. M. in de la Sagra, Histoire physique, politique et naturelle Pleurostomella cubensis Cushman and Bermudez. Pleurosto de 1'Ile de Cuba, p. 189, pi. 11, figs. 14, 15. MR. mella alasanensis Cushman var. cubensis Cushman and Quinqueloculina neostriatula Thalmann. Cushman, Todd, and Bermudez, 1937, Cushman I/ab. Foram. Research Contr., Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 333, pi. v. 13, p. 17, pi. 1, figs. 64, 65. EO. (PI. 4, fig. 11.) 83, fig. 28. R. Pleurostomella naranjoensis Cushman and Bermudez, 1937, Quinqueloculina parkeri (Brady). Cushman, Todd, and Post, Cushman Lab. Foram. Research Contr.. v. 13, p. 16, pi. 1, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 333, pi. 83, figs. 59, 60. O. fig. 23. R. Pleurostomella sp. O. (PI. 4, fig. 10.) Quinqueloculina poeyana d'Orbigny, 1839, Foraminiferes, in de A single specimen exhibits closely spaced distinct costae la Sagra, Histoire physique, politique et naturelle de 1'Ile over the initial half of the test. As ornamentation is de Cuba, p. 191, pi. 11, figs. 25-27. R. (PI. 17, fig. 4.) almost unknown in family Ellipsoidinidae, this specimen Quinqueloculina polygona d'Orbigny. Todd, 1962, U.S. Geol. seems to be noteworthy. Survey Prof. Paper 354-H, 1961, p. 187, pi. 22, fig. 5. R. Polymorphinella pacifica Cushman and Hanzawa. Cushman, Quinqueloculina cf. Q. seminulum (Linne). Cushman, Todd, Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, 260-H, p. 344, pi. 86, figs. 23, 24. R. p. 333, pi. 83, fig. 29. R. Pullenia bulloides (d'Orbigny). Cushman and Todd, 1943, Quinqueloculina subarenaria Cushman, 1917, U.S. Natl. Mus. Cushman Lab. Foram. Research Contr., v. 19, p. 13, pi. 2, Bull. 71, pt. 6, p. 44, pi. 10, figs. 1, 2. R. figs. 15-18. OM. Quinqueloculina subcuneata Cushman. Quinqueloculina crassa Pullenia sp. OM. var. subcuneata Cushman. Cushman, Todd, and Post, Flattened, four to five chambers. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 333, pi. 83, Pyrgo denticulata (Brady). Cushman, Todd, and Post, 1954, fig. 22. R. (PI. 17, fig. 6.) U.S. Geol. Survey Prof. Paper 260-H, p. 340, pi. 85, Quinqueloculina sulcata d'Orbigny. Cushman, Todd, and Post, fig. 22. R. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 334, pi. 84, Pyrgo denticulata var. striolata (Brady). Cushman, Todd, and figs. 1, 2. R. Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 340, Quinqueloculina tubus Todd, 1957, U.S. Geol. Survey Prof. Paper pi. 85, fig. 23. R. 280-H, p. 306, pi. 85, fig. 18. R. Pyrgo murrhina (Schwager). Biloculina murrhina Schwager, Rectobolivina bifrons var. striatula (Cushman). Cushman, 1866, Novara Exped., Geol. Theil. v. 2, p. 203, pi. 4, fig. 1937, Cushman Lab. Foram. Research Spec. Pub. 9, p. 205, 15. M. pi. 23, figs. 17, 18. R. Pyrgo sp. EO. Rectoglandulina sp. O. Oval in outline and inflated. A single small (0.35 mm) specimen consisting of four Pyrulina labiata (Schwager). Polymorphina labiata Schwager, nearly equal and nonoverlapping chambers and a small 1866, Novara Exped., Geol. Theil, v. 2, p. 246, pi. 7, fig. apertural chamber. 90. M. Reussella pulchra Cushman, 1945, Cushman Lab. Foram. Re Quinqueloculina agglutinans d'Orbigny. Graham and Militante, search Contr., v. 21, p. 34, pi. 6, figs. 11, 12. R. (PI. 18, 1959, Stanford Univ. Pub., Geol. 'Sci., v. 6, no. 2, p. 41, fig. 6.) pi. 4, fig. 10. R. (PI. 17, fig. 8.) Reussella simple® (Cushman). Cushman, Todd, and Post, 1954, Besides the typical form of this species, such as speci U.S. Geol. Survey Prof. Paper 260-H, p. 354, pi. 88, figs. mens illustrated from Saipan (Todd, 1957, pi. 85, fig. 6) 1, 2. MR. and from the Philippines (reference above), there occur Reussella sp. O. a few specimens, similar to the one here illustrated, in Robulus cf. R. clerioii (Fornasini). Cushman and Todd, 1945, which the wall is less rough, the peripheral angles are Cushman Lab. Foram. Research Spec. Pub. 15, p. 15, pi. 2, rounded, and the aperture is filled by a long bladelike fig. 11. O. tooth, bifid at the tip. Robulus limbosus (Reuss). Cushman, Todd, and Post, 1954, Quinqueloculina anguina var. arenata Said. Cushman, Todd, U.S. Geol. Survey Prof. Paper 260-H, p. 343, pi. 86. fig. and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, 1. R. p. 332, pi. 83, fig. 21. R. Robulus orbicularis (d'Orbigny). Asano, 1956, Tohoku Univ. Quinqueloculina apicula Cushman, 1921, U.S. Natl. Mus. Bull. Sci. Repts., 2d ser. (Geology), v. 27, p. 49, pi. 1, figs. 19- 100, v. 4, p. 422, pi. 88, figs. 1, 2. R. 21. R. (PI. 18, fig. 1.) Quinqueloculina berthelotiana d'Orbigny. Cushman, 1932, U.S. Robulus rotulns (Stache). Cristellaria rotula Stache, 1864, Natl. Mus. Bull. 161, pt. 1, p. 19, pi. 5, figs. 2-4. R. Novara Exped., Geol. Theil, v. 1, sec. 2, p. 233, pi. 23, Quinqueloculina bidentata d'Orbigny. Cushman, Todd, and fig. 12. O. Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 332, Robulus vortex (Fichtel and Moll). Cushman, 1933, U.S. Natl. pi. 83, fig. 30 (erroneously given as fig. 31). R. Mus. Bull. 161, pt. 2, p. 5, pi. 2, fig. 1. R. Quinqueloculina bosciana d'Orbigny. Graham and Militante, Robulus spp. EOM. 1959, Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, p. 43, Unornamented forms. pi. 5, fig. 3. R. (PL 17, fig. 9.) Rosalina concinna (Brady). Todd, 1965, U.S. Natl. Mus. Bull. Quinqueloculina distorqueata Cushman, in Cushman, Todd, and 161, pt. 4, p. 10, pi. 4, fig. 3. R. Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 333, Rosalina floridana (Cushman). Todd, 1965, U.S. Natl. Mus. pi. 83, fig. 27. R. Bull. 161, pt. 4, p. 10, pi. 3, figs. 1, 3; pi. 4, fig. 5. R. SMALLER FORAMINIFERA FROM GUAM 131 Rosalind micens (Cushman). Todd, 1965, U.S. Natl. Mus. Bull. Spirolina acicularis (Batsch). Cushman, Todd, and Post, 1954, 161, pt. 4, p. 12, pi. 4, fig. 2. R. U.S. Geol. Survey Prof. Paper 260-H, p. 348, pL 87, fig. Rosalina rugosa d'Orbigny. Todd, 1965, U.S. Natl. Mus. Bull. 6. R. 161, pt. 4, p. 12, pi. 4, fig. 1. R. Spirolina arietina (Batsch). Cushman, Todd, and Post, 1954, Rosalina cf. R. wrightii (Brady). Discorbina Wrightii Brady, U.S. Geol. Survey Prof. Paper 260-H, p. 348, pi. 87, figs. 1881, Annals and Mag. Nat. History, ser. 5, v. 8, p. 413, 4,5. R. pi. 21, fig. 2. O. Spiroloculina angulata Cushman. Cushman, Todd, and Post, Rosalind, sp. E. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 334, pi. Rotaliammina mayori Cushman. Cushman, Todd, and Post, 84, figs. 11, 12. R. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 342, pi. 85, Spiroloculina caduca Cushman. Todd, 1957, U.S. Geol. Survey fig. 36. R. Prof. Paper 280-H, p. 286 (table 4), pi. 87, fig. 10. R. Rotorbinella mira (Cushman). Todd, 1965, U.S. Natl. Mus. Spiroloculina clara Cushman. Cushman, Todd, and Post, 1954, Bull. 161, pt. 4, p. 18. pi. 8, fig. 2. R. (PI. 18, fig. 13.) U.S. Geol. Survey Prof. Paper, 260-H, p. 335, pi. 84, Saccammina sp. Proteonina sp. Cushman, Todd, and Post, 1954, fig. 9. R. U.S. Geol. Survey Prof. Paper 260-H, p. 328, pi. 83, Spiroloculina communis Cushman and Todd. Cushman, Todd, fig. 1. R. and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, The generic change was necessitated by the demonstra p. 335, pi. 84, fig. 13. R. tion (Loeblich and Tappan, 1955, p. 7, 8) that Proteonina is a synonym of Reophax. Spiroloculina enfimia Cushman. Todd, 1957, U.S. Geol. Survey Sagenina frondescens (Brady). Chapman, 1899, Linnean Soc. Prof. Paper 280-H, p. 286 (table 4), pi. 87, fig. 12. R. Zoology Jour., v. 28, p. 4, pi. 1, figs. 1, 2; pi. 2, figs. 1, 2. Spiroloculina folium Todd, 1957, U.S. Geol. Survey Prof. Paper R. (PI. 17, fig. 1.) 280-H, p. 307, pi. 87, fig. 5. R. Saracenaria sp. O. (PI. 4, fig. 2.) Spiroloculina foveolata Egger. Cushman, Todd, and Post, 1954, Schlumbergerina alveoliniformis (Brady). Graham and Mill- U.S. Geol. Survey Prof. Paper 260-H, p. 335, pi. 84, tante, 1959, Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, fig. 14. R. p. 49, pi. 6, fig. 11. R. Spiroloculina hadai Thalmann. Graham and Militante, 1959, Siphogenerina raphana (Parker and Jones). Cushman, Todd, Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, p. 52, pi. 7, and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. fig. 3. R. 356, pi. 88, figs. 23, 24. R. Spiroloculina marshallana Todd, in Cushman, Todd, and Post, Siphogenerina striata (Schwager). Dimorphina striata 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 335, pi. Schwager, 1866, Novara Exped., Geol. Theil, v. 2, p. 251, 84, fig. 8. R. pi. 7, fig. 99. OM. (PI. 5, fig. 18.) Spiroloculina rugosa Cushman and Todd, 1944, Cushman Lab. Siphogenerina"! sp. O. Foram. Research Spec. Pub. 1], p. 66, pi. 9, figs. 9-13. R. Coarsely spinose. Stilostomella aff. S. adelinensis (Palmer and Bermudez). Siphonina tubulosa Cushman. Todd, and Post, 1954, U.S. Geol. Ellipsonodosaria"! adelinensis Palmer and Bermudez, Survey Prof. Paper 260-H, p. 361, pi. 89, figs. 29, 30. R. 1936, Soc. Cubana Hist. Nat. Mem., v. 10, no. 5, p. 299, Siphoninoides echinatus (Brady). Cushman, Todd, and Post, pi. 18, fig. 13. O. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 361, pi. 89, Stilostomella curvatura (Cushman). Ellipsonodosaria curva- figs. 31, 32. R. tura Cushman, 1939, Cushman Lab. Foram. Research Sorites marginalis (Lamarck). Cushman, Todd, and Post, 1954, Oontr., v. 15, p. 71, pi. 12, fig. 6. O. (PI. 4, figs. 5, 6.) U.S. Geol. Survey Prof. Paper 260-H, p. 348, pi. 82, Stilostomella nuttalli (Cushman and Jarvis). Ellipsonodosaria fig. 4. R. nuttalli Cushman and Jarvis, 1934, Cushman Lab. Foram. Sphaeridia papillata Heron-Alien and Barland. Todd, 1957, Research Contr., v. 10, p. 72, pi. 10, fig. 6. E?O. U.S. Geol. Surrey Prof. Paper 280-H, p. 290 (table 4), pi. Stilostomella recta (Palmer and Bermudez). Ellipsonodosaria 93, fig. 12. R. recta Palmer and Bermudez, 1936, Soc. Cubana Hist. Nat. Sphaeroidina bulloides d'Orbigny. Cushman, Todd, and Post, Mem., v. 10, no. 5, p. 297, pi. 18, figs. 6, 7. O. (PI. 4, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 367, pi. 90, fig. 13.) fig. 39. MR. Stilostomella subspinosa (Cushman). Ellipsonodosaria sub- Spirillina decorata Brady. Cushman, Todd, and Post, 1954, spinosa Cushman, 1943, Cushman Lab. Foram. Research U.S. Geol. Survey Prof. Paper 260-H, p. 356, pi. 88, figs. Contr., v. 19, p. 92, pi. 16, figs. 6, 7. EO. 32,33. R. Stilostomella verneuili (d'Orbigny). Beckmann, 1954, Eclogae Spirillina denticulogranulata Chapman. Todd, 1962, U.S. Geol. geol. Helvetiae, v. 46, no. 2, 1953, p. 372, pi. 21, figs. 39, Survey Prof. Paper 354-H, 1961, p. 179 (table 1), pi. 23, 40. EOM. (PI. 4, fig. 4; pi. 12, fig. 3.) fig. 5. R. Stomatorbina concentrica (Parker and Jones). Mississippina Spirillina tuberculatolimbata Chapman. Cushman, Todd, and concentrica (Parker and Jones). Cushman, Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 357, Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 360, pi. 88, fig. 34. R. pi. 89, fig. 27. R. (PI. 19, fig. 7.) Spirillina vivipara Ehrenberg. Parker, 1958, Swedish Deep- Stomatorbina torrei (Cushman and Bermudez). Lamarckina Sea Exped. Repts., v. 8, Sediment Cores, no. 4, p. 264, torrci Cushman and Bermudez, 1937, Cushman Lab. pi. 3, fig. 4. R. Foram. Research Contr., v. 13, p. 21, pi. 2, figs. 24-26. Spirillina vivipara var. revertens Rhumbler. Cushman, Todd, EO. (PI. 1, fig. 3.) and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, Streblus beccarii (Linne). Todd, 1957, U.S. Geol. Survey Prof. p. 357, pi. 88, fig. 30. R. Paper 280-H, p. 290 (table 4), pi. 91, fig. 3. R. 132 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS Streblus beccarii tepida (Cushman). Todd, 1957, U.S. Geol. Triloculina oblonga (Montagu). Cushman, Todd, and Post, Survey Prof. Paper 280-H, p. 290 (table 4), pi. 91, fig. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 339, pi. 85, 5. R. figs. 5-7. R. Streblus beccarii var. of Todd, 1957, U.S. Geol. Survey Prof. Triloculina spinata Cushman. Cushman, Todd, and Post, 1954, Paper 280-H, p. 290 (table 4), pi. 91, fig. 4. R. (PI. 19, U.S. Geol. Survey Prof. Paper 260-H, p. 339, pi. 85, fig. 6.) fig. 8. R. Svratkina australiensis (Chapman, Parr, and Collins). Dis- Triloculina subgranulata Cushman, 1918, Carnegie Inst. Wash corbis tuberoulata (Balkwill and Wright) var. australi ington Pub. 213, p. 290, pi. 96, fig. 4. R. (PI. 17, fig. 7.) ensis Chapman, Parr, and Collins, 1934, Linnean Soc. Triloculina subplanciana Cushman, in Cushman, Todd, and Post, Zoology Jour., v. 38, no. 262, p. 563, pi. 8, fig. 9. R. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 339, pi. 85, Textularia aaglutinans d'Orbigny. Cushman, Todd, and Post, fig. 17. R. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 328, pi. Triloculina terquemiana (Brady). Cushman, Todd, and Post, 83, fig. 2. R. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 340, pi. 85, Textularia alveata Todd, 1957, U.S. Geol. Survey Prof. Paper fig. 9. R. 280-H, p. 307, pi. 85, fig. 12. R. Triloculina transversestriata (Brady). Todd, 1957, U.S. Geol. Textularia cornea d'Orbigny. Cushman, Todd, and Post, 1954, Survey Prof. Paper 280-H, p. 288 (table 4), pi. 85, fig. U.S. Geol. Survey Prof. Paper 260-H, p. 329, pi. 83, 16. R. fig. 4. R. Triloculina tricarinata d'Orbigny. Cushman, Todd, and Post, Textularia dupla Todd, in Cushman, Todd, and Post, 1954, U.S. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 340, pi. 85, Geol. Survey Prof. Paper 260-H, p. 329, pi. 83, fig. 6. R. figs. 15, 16. R. Textularia foliacea Heron-Alien and Earland. Cushman, Todd, Triloculina trigonula (Lamarck). Cushman, Todd, and Post, and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 340, pi. 85, p. 329, pi. 83, fig. 7. R. fig. 18. R. Textularia foliacea var. oceanica Cushman. Cushman, Todd, Triloculina sp. A. O. and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, Compressed and sharp angled. p. 329, pi. 83, fig. 8. R. Triloculina sp. B. E. Textularia kerimbaensis Said. Cushman, Todd, and Post, 1954, Plump and rounded. U.S. Geol. Survey Prof. Paper 260-H, p. 329, pi. 83, fig. Uvigerina ampullacea Brady. Cushman, Todd, and Post, 1954, 11. R. U.S. Geol. Survey Prof. Paper 260-H, p. 355, pi. 88, fig. Textularia semialata Cushman. Cushman, Todd, and Post, 19. OR. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 330, pi. Uvigerina porrecta Brady. Gushman, Todd, and Post, 1954, 83, fig. 5. R. U.S. Geol. Survey Prof. Paper 260-H, p. 355, pi. 88, figs. Tretomphalus concinnus (Brady). Todd, 1957, U.S. Geol. Sur 14, 15. R. vey Prof. Paper 280-H, p. 292 (table 4), pi. 92, fig. 4. R. Uvigerina proboscidea Schwager. Cushman, Todd, and Post, Tretomphalus planus Cushman. Todd, 1957, U.S. Geol. Survey 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 355, pi. 88, Prof. Paper 280-H, p. 292 (table 4), pi. 92, fig. 3. R. fig. 18. M. Trifarina bradyi Cushman. Cushman, Todd, and Post, 1954, Uvigerina proboscidea var. vadescens Cushman. Cushman, U.S. Geol. Survey Prof. Paper 260-H, p. 356, pi. 88, Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper fig. 21. MR. 260-H, p. 355, pi. 88, fig. 17. MR. Triloculina cf. T. bassensis Parr. Cushman, Todd, and Post, Vaginulinopsis sublittius multicamerata (Cushman and Stain- 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 337, pi. 85, forth). Harginulina sublituus (Nuttall) var. multi camerata Cusihman and Stainforth, 1945, Cushman Lab. fig. 14. R. Foram. Research Spec. Pub. 14, p. 23, pi. 3, figs. 6, 7. O. Triloculina aff. T. bicarinata d'Orbigny. Cushman, Todd, and (PI. 4, fig. 3.) Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 338, Vaginulinopsis'! sp. E. pi. 85, fig. 2. R. A heavily costate fragment of the initial stage. Triloculina earlandi Cusihman, in Cushman, Todd, and Post, Valvulina davidiana Chapman. Cushman, Todd, and Post, 1954, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 338, pi. 85, U.S. Geol. Survey Prof. Paper 260-H, p. 331, pi. 82, fig. fig. 3. R. 2. R. Triloculina incisiira Todd, 1957, U.S. Geol. Survey Prof. Paper Valvulina martii Cushman and Bennudez. Todd and Post, 1954, 280-H, p. 308, pi. 86, fig. 18. R. U.S. Geol. Survey Prof. Paper 260-N, p. 553, pi. 198, Triloculina involuta Todd, in Cushman, Todd, and Post, 1954, fig. 1. E. U.S. Geol. Survey Prof. Paper 260-H, p. 338, pi. 85, Valvulineriat sp. E. fig. 4. R. A single specimen, having five chambers in the final Triloculina irregularis (d'Orbigny). Cushman, Todd, and Post, whorl and a distinctly porous wall. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 338, pi. 85, Vertebralina striata d'Orbigny. Graham and Militante, 1959, fig. 12. R. Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, p. 60, pi. 9, Triloculina herimbatica (Heron-Alien and Earland). Cushman, figs. 11, 12. R. Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper Virgulina colei Cusihman, 1937, Cushman Lab. Foram. Research 260-H, p. 339, pi. 85, figs. 10,11. R. Spec. Pub. 9, p. 12, pi. 2, figs. 9,10. O. Triloculina marshallana Todd, in Cushman, Todd, and Post, Virgulina zetina Cole. Cushman, 1937, Cushman Lab. Foram. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 339, pi. 85, Research, Spec. Pub. 9, p. 7, pi. 1, figs. 18, 19. O. (PI. 5, fig. 13. R. fig. 5.) SMALLER FORAMINIFERA FROM GUAM 133 Vulvulina spinosa Gushman, 1927, Cushman Lab. Foram. Re Tertiary stratigraphical correlation, Cambridge Univ. search Contr., v. 3, p. Ill, pi. 23, fig. 1. OM. Press, p. 97, pi. 10, figs. H-K. O. (PL 11, fig. 3.) GloMgerina yeguaensis Weinzierl and Applin, 1929, Jour. PLANKTONIC SPECIES Paleontology, v. 3, p. 408, pi. 43, fig. 1. EO. (PI. 2, fig. Candeina nitida d'Orbigny. Cushman, Todd, and Post, 1954, 6; pi. 8, fig. 9.) U.S. Geol. Survey Prof. Paper 260-H, p. 370, pi. 91, fig. GloMgerinella aequilateralis (Brady). Todd, 1965, U.S. Natl. 15. MR. (PI. 14, fig. 10.) Mus. Bull. 161, pt. 4, p. 64, pi. 25, figs. 4, 5. MR. Cassigerinella chipolensis (Cushman and Ponton). Blow and GloMgerinella danvillensis (Howe and Wallace). Nonion Banner, in Eames, Banner, Blow, and Clarke, 1962, danvillensis Howe and Wallace, 1932, Louisiana Geol. Fundamentals of mid-Tertiary stratigraphical correla Bull. 2, p. 51, pi. 9, fig. 3. O. (PI. 8, fig. 2.) tion, Cambridge Univ. Press, p. 81, pi. 15, figs. M, N. GloMgerinita glutinata (Egger). Todd, 1964, U.S. Geol. Sur O. (PI. 8, fig. 3.) vey Prof. Paper 260-CC, p. 1085. MR. Chiloguembelina cubensis (Palmer). Beckmann, 1957, U.S. GloMgerinoides conglobatus (Brady). Cushman, Todd, and Natl. Mus. Bull. 215, p. 89, pi. 21, fig. 21; text fig. 14, Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 368, figs. 5-8. O. (PI. 8, figs. 1, 4.) pi. 91, fig. 12. MR. (PI. 14, fig. 4,) Globigerapsis index (Finlay). GloMgerinoides index Finlay, GloMgerinoides elongatus (d'Orbigny). Cushman, Todd, and 1939, Royal Soc. New Zealand Trans., v. 69, p. 125, pi. Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 368, 14, figs. 85-88. E. (PI. 2, figs. 1, 2.) pi. 91, fig. 5. R. GloMgerina ampliapertura Bolli, 1957, U.S. Natl. Mus. Bull. GloMgerinoides ruber (d'Orbigny). Cushman, Todd, and Post, 215, p. 108, pi. 22, figs. 4-7. O. (PL 8, fig. 7.) 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 369, pi. 91, GloMgerina aff. G. apertura Cushman, 1918, U.S. Geol. Survey fig. 6. R. Bull. 676, p. 57, pi. 12, fig. 8. M. (PI. 14, fig. 5.) GloMgerinoides sacoulifer (Brady). Cushman, Todd, and Post, GloMgerina conglomerate/, Schwager. Banner and Blow, 1960. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 369, pi. 91, Cushman Found. Foram. Research Contr., v. 11, p. 7, pi. fig. 7. MR. (PI. 14, fig. 3.) 2, fig. 3. EOM. (PI. 2, fig. 5; pi. 8, fig. 5; pi. 14, fig. 1.) GloMgerinoides trilobus (Reuss). Hamilton and Rex, 1959, U.S. GloMgerina danvillensis Howe and Wallace, 1932, Louisiana Geol. Survey Prof. Paper 260-W, p. 792, pi. 253, figs. Geol. Bull. 2, p. 74, pi. 10, fig. 9. O. (PI. 9, fig. 1.) 17-19. O?M. (PI. 11, fig. 4.) GloMgerina dissimilis Cushman and Bermudez, 1937, Cushman Globoquadrina altispira (Cushman and Jarvis). Bolli, 1957, Lab. Foram. Research Oontr., v. 13, p. 25, pi. 3, figs. U.S. Natl. Mus. Bull. 215, p. Ill, pi. 24, figs. 7, 8. M. 4-6. O. (PI. 8, fig. 6.) (PI. 14, fig. 2.) GloMgerina eggeri Rhumbler. Bradshaw, 1959, Cushman Globorotatia centralis Cushman and Bermudez. Todd, 1957, Found. Foram. Research Contr., v. 10, p. 35, pi. 6, figs. U.S. Geol. Survey Prof. Paper 280-H, p. 268 (table 1), 5,8-10. R. pi. 71, figs. 1, 3. E. (PL 3, fig. 1.) Globiget ina gortanii (Borsetti). GloMgerina turritilina Blow Globorotalia fohsi robusta Bolli, 1957, U.S. Natl. Mus. Bull. 215, and Banner, in Eames, Banner, Blow, and Clarke, 1962, p. 119, pi. 28, fig. 16. M. (PI. 16, fig. 5.) Fundamentals of mid-Tertiary stratigraphical correla Globorotalia hirsiita (d'Orbigny). Parker, 1962, Micropaleon- tion, Cambridge Univ. Press, p. 98, pi. 13, figs. D-G; tology, v. 8, no. 2, p. 236, pi. 5, figs. 10-15; pi. 6, fig. 1. MR. postscript p. 146. EO. (PI. 2, fig. 3; pi. 10, figs. 6-8.) (PL 16, fig. 2.) GloMgerina hexagona Natland. Todd, 1964, U.S. Geol. Survey Globorotalia menardii (d'Orbigny). Cushman, Todd, and Post. 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 370, pi. Prof. Paper 260-CC, p. 1080, pi. 292, fig. 3. M. (PI. 14, fig. 8.) 91, fig. 19. K. Globorotalia menardii fijiensis Cushman. Globorotalia men GloMgerina, increbescens Bandy, 1949, Bull. Am. Paleontology, ardii (d'Orbigny) var. fijiensis Cushman, 1934, B. P. v. 32, no. 131, p. 120, pi. 23, fig. 3. O. (PI. 11, fig. 1.) Bishop Mus: Bull. 119, p. 136, pi. 17, fig. 5. M. (PI. GloMgerina nepenthes Todd, 1957, U.S. Geol. Survey Prof. Paper 15, fig. 8.) 280-H, p. 301, pi. 78, fig. 7. M. (PI. 14, figs. 6, 7.) Globorotalia menardii nngulata Bermudez. Todd, 1964, U.S. GloMgerina opima nana (Bolli). Globorotalia opima nana Geol. Survey Prof. Paper 260-CC, p. 1093, pi. 295, fig. 3. Bolli, 1957, U.S. Natl. Mus. Bull. 215, p. 118, pi. 28, fig. 3. M. (PL 16, fig. 3.) O. (PI. 9, figs. 3,4.) Globorotalia menardii-tnmida transition form. Globorotalia GloMgerina pera Todd, 1957, U.S. Geol. Survey Prof. Paper (Globorotalia) menardii-tumida transition form, Todd, 280-H, p. 301, pi. 70, figs. 10, 11. E. (PI. 2, fig. 4.) 1964, U.S. Geol. Survey Prof. Paper 260-CC, p. 1092, pi. GloMgerina sellii (Borsetti). GloMgerina oligocaenica Blow 294, fig. 2. M. (PL 16, fig. 1.) and Banner, in Eames, Banner, Blow, and Clarke, 1962, Globorotalia spinuloinflata (Bandy). GloMgerina, spinuloin- Fundamentals of mid-Tertiary stratigraphical correla flata Bandy, 1949, Bull. Am. Paleontology, v. 32, no. 131, tion, Cambridge Univ. Press, p. 88, pi. 10, figs. G, L-N; p. 122, pi. 23, fig. 1. E. (PI. 3, fig. 2.) postscript p. 146. O. (PI. 10, figs. 1-5.) Globorotalia spinulosa Cushman. Todd, 1957, U.S. Geol. Survey GloMgerina senilis Bandy. GloMgerina ouachitaiensis var. Prof. Paper 280-H, p. 268 (table 1), pi. 71, fig. 2. E. senilis Bandy, 1949, Bull. Am. Paleontology, v. 32, no. 131, (PL 3, fig. 4.) p. 121, pi. 22, fig. 5. O. (PI. 11, fig. 2.) Globorotalia tumida (Brady). Cushman, Todd, and Post, 1954, GloMgerina suteri (Bolli). Globorotaloides suteri Bolli, 1957, U.S. Geol. Survey Prof. Paper 260-H, p. 370, pi. 91, fig. U.S. Natl. Mus. Bull. 215, p. 117, pi. 27, figs. 9-13. O. 21 MR. (PL 16, fig. 4.) (PI. 9, fig. 2.) Globorotalia tumida flexuosa (Koch). Todd, 1964, U.S. Geol. GloMgerina tripartita tapuriensis Blow and Banner, in Eames, Survey Prof. Paper 260-CC. p. 1094, pi. 294, fig. 4. M. Banner, Blow, and Clarke, 1962, Fundamentals of mid- (PL 16, fig. 6.) 134 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS Globorotalia wilcoxensis Cushman and Ponton, 1932, Cushman Miocene (Tertiary for g) Lab. Foram. Research Contr., v. 8, p. 71, pi. 9, fig. 10. E. (PI. 3, fig. 3.) USGS No. Field No. Description of locality Hantkenina alabamensis Cushman. Todd and Low, 1960, U.S. Geol. Survey Prof. Paper 260-X, p. 850, pi. 259, fig. 14. E. f25805,--_-_ Rr 15-1 Lujuna Point, northeast coast of Hantkenina inflata Howe, 1928, Jour. Paleontology, v. 2, p. 14, Guam; tuff bed about 70 ft text fig. 2. EO. (PI. 1, fig. 2; pi. 8, fig. 8.) above sea level. Hastigerina pelagica (d'Orbigny). Todd, 1965, U.S. Natl. Mus. f25806 _____ Rr 14-1 Lujuna Point, northeast coast of Bull. 161, pt. 4, p. 68, pi. 26, fig. 7. M. (PI. 15, fig. 7.) Guam; about 6 ft below Rr Orbulina bilobata (d'Orbigny). GloMgerina bilobata d'Orbigny, 15-1. 1846, Foraminiferes fossiles du bassin tertiaire de Vienne, f25807---__- Ts 5-10 Catalina Point, northeast coast of p. 164, pi. 9, figs. 11-14. M. Guam ; limestone at base of Orbulina suturalis Bronnimann. Todd, 1964, U.S. Geol. Survey formation. Prof. Paper 260-CC, p. 1087, pi. 290, fig. 1. M. (PL 15, f25808.._--_ Ts 5-7 Catalina Point, northeast coast of figs. 1, 4.) Guam ; 50 ft below upper tuff Orbulina universa d'Orbigny, 1846, Foraminiferes fossiles du bed. bassin de Vienne, p. 22, pi. 1, fig. 1. MR. f25809_----- Ts 5-6 Catalina Point, northeast coast of Pulleniatina obliquiloculata (Parker and Jones). Cushman, Guam ; 30 ft below upper tuff Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper bed. 260-H, p. 369, pi. 91, fig. 11. MR. (PI. 14, fig. 9.) f25810.----_ Ts 5-5 Catalina Point, northeast coast of Sphaeroidinella dehiscens (Parker and Jones). Cushman, Todd, Guam; 10 ft below upper tuff and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, bed. p. 369, pi. 91, fig. 14. MR. f25811__--_- Uu 1-3 Anao Point, northeast coast of Sphaeroidinella disjuncta Finlay. Todd, 1964, U.S. Geol. Sur Guam; approximately 10 ft vey Prof. Paper 260-CC, p. 1089, pi. 290, figs. 2, 4. M. below dense white limestone. (PI. 15, fig. 6.) Sphaeroidinella Jcochi (Caudri). Todd, 1964, U.S. Geol. Survey Prof. Paper 260-CC, p. 1088, pi. 289, figs. 5, 6. M. (PI. Recent 15, fig. 3.) USGS No. Field No. Lat N. Long E. Depth Sphaeroidinella seminulina (Schwager). GloMgerina semi- (feet) nulina Schwager, 1866, Novara Exped., Geol. Theil, v. 2, p. 256, pi. 7, fig. 112. M. (PI. 15, fig. 5.) f 25696-----.- 7 13° 15. 9' 144° 44. 2' Beach LIST OF LOCALITIES .25697-.---- 26 29. 0 52. 1 Do. f25698_.----- 32 37. 0 53.9 Do. For Tertiary localities refer to Tracey and others f 25699.. -.- _- 59 30. 3 47.6 Do. (1964, pi. 2), and for Recent localities refer to Emery f 25700---.--- 63 30. 2 47.4 Do. 38.9 Do. (1962, figs. 14,37, and 51A). f25701__----_ 78 22. 3 f25702_----__ 83 34. 6 49. 7 Do. f25703__----_ 86 28. 7 45. 6 Reef Eocene (Tertiary b) f25704______87 28. 7 45.5 Do. f25705_----_- 88 28. 7 45.5 Do. USGSNo. Field No. Description of locality f25706-.----- 89 28. 7 45. 5 Do. f 25707------90 28. 8 45.5 Do. f25817- Ei 4-1 Exposure at connecting road f 25708.-- -_ _ - 91 28.8 45. 5 Do. between north and south roads f 25709.----- 92 28. 8 45.5 Do. in Naval Ammunition Depot to f 25710-----.- 93 28.8 45. 5 Do. summit of Mount Alifan. f25711-_---_ 94 28. 9 45.5 Do. f25818. Jl 2-1 Ledge outcrop approximately 1% f25712___.-__ 95 28.9 45.5 Do. miles northeast of Yona and f25713_----_- 109 25. 2 47.0 Beach from 50 to 100 ft north of the f25714,-_---- 127 25.2 47. 1 4 old road between Yona and the f 25715------131 25. 1 47. 1 13 abandoned radio station. f25716------141 25.0 47. 1 21 f25717-----__ 151 25. 0 47. 2 39 Oligocene (Tertiary c) f25718-.----_ 155 25.0 47.2 45 f25719__---_- 160 25.0 47.2 65 f25720_------170 24.9 47.2 75 f25813. Hi 6-1 Reyes' Ranch overlooking Mahlac f25721. ------182 24.9 47.2 87 River, about halfway between f 25722.------193 21.3 46. 1 Beach ranchhouse and valley floor. f 25723-..-- .. 200 14.5 39.3 Do. f25814, Gj 11-1 Intersection of access road with f 25724__- ____ 201 14.3 39. 1 Do. f25815, Gj 13-1, Naval Ammunition Depot 2-AT f25725_-.---_ 212 14.7 42.0 Do. f25816. Gj 14-1. bunkers area (NAD loop). f25726_-_-_-- 213 14.7 42.0 Reef f 25727.------214 14.7 42.0 Do. SMALLER FORAMINIFERA FROM GUAM 135 Recent Recent USGS No. Field No. LatN. Long E. Depth USGS No. Field No. Lat N. Long E. Depth (feet) (feet) f 25728.-. __._ 215 3° 14.7' 144° 42. 0' Reef £25789---.... 662 13° 41. 5' 144° 50. 3' 1,170 f 25729.- _____ 216 14.6 42.0 Do. £25790_. ---_. 663 29.8 541 972 f25730___--._ 217 14.6 42.0 Do. £25791.. _-.__ 664 22.0 47.2 570 f25731____--. 218 14.6 42.0 Do. £25792.-_-_._ 665 15.6 38.3 1,000 f 25732.- ____ - 219 14.5 42.0 Do. £25793 __-_-- 673 25.0 47.1 Reef f 25733.-. ._ _- 220 14.5 42.0 Do. £25794._--__. 682 25.0 47.1 Do. f 25734- __.- _ 275 25.3 47.1 Do. f 25735. ______279 25.2 47.2 Do. f 25736. __. ._- 25.1 286 47.3 Do. REFERENCES CITED f 25737-.- --_. 299 25.0 47.0 Do. f 25738.- --.__ 302 24.9 47.1 Do. Atwill, E. R., 1935, Oligocene Tumey formation of California : f 25739.. _____ 306 24.9 47.2 Do. Am. Assoc. Petroleum Geologists Bull., v. 19, p. 1192-1204. £25740. ______348 15.7 29.8 5 Bandy, O. L., 1964, Cenozoic planktonic foraminiferal zonation : f 25741. -__._ _ 378 15.0 38.5 21 Micropaleontology, v. 10, p. 1-17, figs. 1-6. f 25742-...-.. 422 14.6 39.1 7 Beckmann, J. P., 1957, Chiloguembelina Loeblich and Tappan f25743. ------423 14.7 39.1 8 and related Foraminifera from the lower Tertiary of Trini f 25744..... _ _ 450 14 4 39.0 4 dad, B.W.I.: U.S. Natl. Mus. Bull. 215, p. 83-95, pi. 21, £25745. ______451 14.4 39. 1 3.5 figs. 14-16. £25746. ______462 15.9 39. 7 68 Blow, W. H., 1959, Age, correlation, and biostratigraphy of the £25748. ______468 15. 8 39. 8 67 upper Tocuyo (San Lorenzo) and Pozon formations, eastern £25749. ______470 15.8 39. 8 90 Falcon, Venezuela : Bull. Am. Paleontology, v. 39, no. 178, £25750-_--___ 472 15.8 39. 8 70 p. 67-251, pis. 6-19, figs. 1-5, charts 1^. £25751.. _____ 473 15.7 39.8 15 f 25752.. -_... 510 14 8 39. 3 9 Blow, W. H., and Banner, F. T., 1962, The mid-Tertiary (upper £25753_-.--__ 523 15.5 39. 7 11 Eocene to Aquitanian) Globigerinaceae, in Eames, F. E., £25754...... 524 15. 5 39. 6 55 and others, Fundamentals of mid-Tertiary stratigraphical £25755 _--._. 532 15.8 40. 0 Beach correlation : New York, Cambridge Univ. Press, p. 61-163, f25756______533 15.8 40.0 2 pis. 7-17, figs. 6-20. £25757. ______537 16. 1 39.6 44 Bolli, H. M., 1957a, The genera GloMgerina and Globorotalia in £25758--..... 540 15. 5 40.2 5 the Paleocene-lower Eocene Lizard Springs formation of £25759.. _____ 541 15.4 40. 3 Beach Trinidad, B.W.I. : U.S. Natl. Mus. Bull. 215, p. 61-81, pis. £25760 . . . 543 15. 3 40. 2 1. 5 15-20, figs. 11-13. £25761. ___ 545 15.4 40. 1 2 1957b, Planktonic Foraminifera from the Oligocene- £25762..---.. 546 15. 3 40. 0 4 Miocene Cipero and Lengua formations of Trinidad, B.W.I. : f 25763-_ __. 547 15. 3 40.0 11 U.S. Natl. Mus. Bull. 215, p. 97-123, pis. 22-29, figs. 17-21. £25764.... _ . 549 15. 3 39.9 9 1957c, Planktonic Foraminifera from the Eocene Navet £25765. _._._ 551 15. 4 39.8 18 and San Fernando formations of Trinidad, B.W.I.: U.S. £25766 . 553 15. 3 39.7 26 Natl. Mus. Bull. 215, p. 155-172, pis. 35-39, figs. 25, 26. £25767 . 555 15. 3 39. 6 38 1959, Planktonic Foraminifera as index fossils in Trini £25768.... 556 15. 3 39. 5 43 dad, West Indies and their value for worldwide stratigraphic £25769.- __.. 558 15. 3 39.4 21 correlation : Eclogae geol. Helvetiae, v. 52, no. 2, p. 627-637, f 25770.-.. _. 559 15. 3 39. 3 6 table 1 [I960]. £25771. _____ 561 15. 3 39.2 8 Cole, W. S., 1963, Tertiary larger Foraminifera from Guam: £25772. _____ 562 15. 3 39. 2 8 U.S. Geol. Survey Prof. Paper 403-E, p. E1-E28, pis. 1-11, £25773 563 15. 3 39. 1 3 fig. 1. £25774 _ 577 14.7 41. 2 43 Cole, W. S., Todd, Ruth, and Johnson, C. G., 1960, Conflicting £25775_ _. 584 14 6 41. 3 70 age determinations suggested by Foraminifera on Yap, £25776.___ 596 149 41. 2 38 Caroline Islands (includes appendix, Larger Foraminifera £25777_____. 602 15. 2 41. 2 6 from Yap, by W. S. Cole and Smaller Foraminifera from £25778__.__ 607 16. 17 39. 28 115 Yap, by Ruth Todd) : Bull. Am. Paleontology, v. 41, no. 186, £25779___.__ 610A 16.23 39. 10 165 p. 73-112, pis. 11-13, fig. 1. f 25780. _ 611 16. 31 38.97 315 Cushman, J. A., Todd, Ruth, and Post, R. J., 1954, Recent f 25781 _____ 615 17. 33 39. 22 37 Foraminifera of the Marshall Islands: U.S. Geol. Survey £25782 644 25.4 47. 3 Beach Prof. Paper 260-H, p. 319-384, pis. 82-93, figs. 116-118. £25783 ._- 645 25. 4 47. 3 Reef £25784. ____ 649 25. 4 47. 4 Do. Drooger, C. W., 1956, Transatlantic correlation of the Oligo- £25785--. __ 652 25. 3 47. 4 Do. Miocene by means of Foraminifera : Micropaleontology, v. 2, £25786 653 25. 3 47. 4 Do. p. 183-192, pi. 1, fig. 1. £25787 . .. 660 40.0 50. 0 810 1964, Problems of mid-Tertiary stratigraphic inter £25788 ___ 661 39. 0 50. 4 690 pretation : Micropaleontology, v. 10, p. 369-374, figs. 1, 2. 136 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS Eames, F. E., Banner, F. T., Blow, W. H., and Clarke, W. J., Stainforth, R. M., 1960, Current status of transatlantic Oligo- 1962, Fundamentals of mid-Tertiary stratigraphical corre Miocene correlation by means of planktonic Foraminifera; lation: New York, Cambridge Univ. Press, 163 p., 17 pis., Rev. Micropaleontologie, v. 2, p. 219-230, range chart. 20 figs. Takayanagi, Yokichi, and Saito, Tsunemasa, 1962, Planktonic Emery, K. O., 1962, Marine geology of Guam: U.S. Geol. Survey Foraminifera from the Nobori Formation, Shikoku, Japan: Prof. Paper 403-B, p. B1-B76, pi. 1, figs. 1-65. Tokohu Univ. Sci. Repts., 2d ser. (Geology), spec. v. 5 Ericson, D. B., Ewing, Maurice, and Wollin, Goesta, 1963, Plio (Kon'no Mem. Volume), p. 67-105, pis. 24-28, figs. 1-3. cene-Pleistocene boundary in deep-sea sediments: Science, Thalmann, H. E., 1942, Hantkenina in the Eocene of East Bor v. 139, no. 3556, p. 727-737, figs. 1-14. neo : Stanford Univ. Pub., Univ. Ser., Geol. Sci., v. 3, no. 1, Glaessner, M. F., 1943, Problems of stratigraphic correlation in p. 1-24, figs. 1, 2. the Indo-Pacific region: Royal Soc. Victoria Proc., v. 55, pt. Todd, Ruth, 1957, Smaller Foraminifera, in Geology of Saipan, 1 (new ser.), p. 41-80, chart. Mariana Islands. Part 3, Paleontology: U.S. Geol. Survey 1959, Tertiary stratigraphic correlation in the Indo-Pa Prof. Paper 280-H, p. 265-320, pis. 2, 4, 64-93, tables 1-4. cific region and Australia: Geol. Soc. India Jour., v. 1, p. 1964, Planktonic Foraminifera from deep-sea cores off 53-67, table 1. Eniwetok Atoll, in Bikini and nearby atolls, Marshall Hamilton, E. L., 1953, Upper Cretaceous, Tertiary, and Recent Islands: U.S. Geol. Survey Prof. Paper 260-OC, p. 1067- planktonic Foraminifera from Mid-Pacific fiat-topped sea- 1100, pis. 289-295, figs. 319, 320. mounts: Jour. Paleontology, v. 27, p. 204-237, pis. 29-32, Todd, Ruth, and Low, Doris, 1960, Smaller Foraminifera from figs. 1-5. Eniwetok drill holes: U.S. Geol. Survey Prof. Paper 260-X, Hamilton, E. L., and Rex, R. W., 1959, Lower Eocene phos- p. 799-861, pis. 255-264, figs. 256-259, tables 1-7. phatized Globigerina ooze from Sylvania Guyot: U.S. Geol. Todd, Ruth, and Post, Rita, 1954, Smaller Foraminifera from Survey Prof. Paper 260-W, p. 785-798, pis. 250-254, fig. 255. Bikini drill holes, in Bikini and nearby atolls. Part 4, Hanzawa, Sh6shir6, 1964, The phylomorphogeneses of the Ter Paleontology: U.S. Geol. Survey Prof. Paper 260-N, p. tiary foraminiferal families, Lepidocyclinidae and Miogyp- 547-568, pis. 198-203, fig. 166. sinidae: Tohoku Univ. Sci. Repts., 2d ser. (Geology), v. 35, Tracey, J. L, Jr., Schlanger, 'S. O., Stark, J. T., Doan, D. B., no. 3, p. 295-313. and May, H. G., 1964, General geology of Guam: U.S. Geol. Leupold, Wolfgang, and Vlerk, I. M. van der, 1931, The Tertiary: Survey Prof. Paper 403-A, p. A1-A104, pis. 1-3, figs. 1-53. Leidsche Geol. Meded., v. 5, p. 611-O48, 2 tables. Saito, Tsunemasa, 1962, Notes on GloMgerina nepenthes Todd, Vlerk, I. M. van der, 1955, Correlation of the Tertiary of the 1957: Palaeont. Soc. Japan Trans. Proc., new sen, no. 48, Far East and Europe: Micropaleontology, v. 1, p. 72-75, p. 331-342, pis. 51, 52, figs. 1, 2. tables 1, 2. 1963, Miocene planktonic Foraminifera from Honshu, Vlerk, I. M. van der, and Umbgrove, J. H. F., 1927, Tertiaire Japan: Tohoku Univ. Sci. Repts., 2d ser. (Geology), v. 35, Gidsforaminiferen van Nederlandsch Oost-Indie Weten- no. 2, p. 123-209, pis. 53-56, figs. 1-15. schappelijke Mededeel., no. 6, p. 1-35, figs. 1-24. INDEX A Page Page Page Astrononion australe.-...... 17, 24; pi. 6 Borelispulckrus. -----...... ---.- - 116,25 acervalis, Planorbulina____.... ___--__...... 120,29 novozealandicum...... 12, 24; pi. 12 bosciana, Quinqueloculina...... 14, 30; pi. 17 Acervulina inluierens-----...... 20,23 pusillum...... _...... 7, 24; pi. 6 boueanum, Nonion...... -...... 20,29 sp_. - -- ______..______20,23 australe, Astrononion ______7, 24; pi. 6 bracteata, Asterigerinata...... _...... 4,6,24 acicularis, Spirolina..______..___ ie,31 australiensis, Discorbis tuberculata...... 32 bradyana, Flintina...... __...... 16, 27; pi. 17 acus, Nodosarella...... ______-___._- 6,27,28 Svratkina...... 18,32 bradyi, Astacolus...... 16, 24; pi. 18 adelinensis, EUipsonodosaria...... 31 australis, Miliolinella..._.___....._._...... 14,28 Cymbaloporetta...... _. 18,26 StUostomella... ____...... __._...... 6,31 Eggerella...... 10,11,27 advena altiformis, Patellina..... ______18,29 Karreriella...... 10, 11, 28; pi. 12 Nubeculina divaricata.... ___... 14, 29; pi. 17 Liebusella...... 14,28 advenum, Elphidium. ______....___ 18,27 Baculogypsina sphaerulata...... 13,18,24 Parrina...... 16,29 aequilateralis, Olobigerinella...... __.___. 12,20,33 Bagginapana...... _ 4,6,24 Trifarina...... 12,18,32 affinis, Nodosaria...... ______.._._ 2,28 totomiensis ...... __ .__..__ 18, 24; pi. 19 brevis, Pleurostomella...... 11,12,30 agglutinans, Quinqueloculina.....______14, 30; pi. 17 balcombensis, Discorbis...... _ 6,27 brevoralis, Cibicides...... 7,26 Textularia...----__.______..____..__..._ 14,32 bassensis, Triloculina. _...... _.... 14,32 Bronnimannia haliotis _....._...... 18, 25; pi.19 aggregata, Bdelloidina.. ______16,24 Bdelloidina aggregata___..______16,24 Bulimina aguafrescaensis...... -.... 10,11,25 aguafrescaensis, Bulimina______10,11,25 beccarii, Streblus...... __._...... 18,31, 32; pi. 19 alazanensis.--.--... -- ..---.- 5, 6, 25; pi. 5 alabamensis, Hantkenina...... ______. 1,3,34 tepida, Streblus...... 18,32 bleeckeri-..-...... 5, 6, 25; pi. 5 Alabamina conica....___...__.__.__.. 2, 4,6,23; pi. 6 bengalensis, Osangularia....._...... _. 11 costata...... 16,25 alazanensis, Bulimina-______. 5, 6, 25; pi. 5 Pulmnulinella...... __..___. 10 ovata....---...... ------6,25 cubensis, Pleurostomella...______30 berthelotiana, Quinqueloculina...... 14,30 semicostata------2,5,6,25; pis. 1,5 albatrossi, Angulogerina_____.______18,24 beyrichi, Bolivina...... _. 4, 6, 24; pi. 5 tuxpamensis...... _. .--.. 2,25 Ehrenbergina..______12, 27; pi. 15 bicarinata, Triloculina...... _..... 14,32 wttliamsoniana...... _-...... _.... 25 Alliatina translucens..___.... ______. 20,23 bidentata, Quinqueloculina...... 14,30 sp.. 6,25 alternans, Pleurostomella..__...___.. n, 12,29; pi. 12 bierigi, Pleurostomella.____...... 5,6,30 Bulimindla grata...... _._-...... - 26 altiformis, Patellina advena...... __.___.___ 18,29 Bifarina.__...... __._...... ___.... 25 milletti...... 16,25 altispira, Globoquadrina...... _..... 7, 9,12,33; pi. 14 bifrons striatula, Rectobolivina. ....____.. 16,30 septate.... 6,10,11,25 alveata, Textularia....__..____.._____.____..__ 14,32 bikiniensis, Amphistegina_.___...._...... _. 2, 23 Buliminoides williamsoniana...... _...... 16,25 alveolata, Fissurina_.___.__.__..._....______n,27 Halkyardia__.._.___._.__...... 3,5,6,28 Lagena...... ___...... __.._.__..______27 buttoides, Pullenia...... -. - 7,12,30 bilobata, Olobigerina..__._____...... 34 Sphaeroidina...... 12,18,31 alveoliniformis, Ammomassilina...... ______14,23 Orbulina...... 7,12, 34 Massilina---.__..______.______.______23 byramensis, Angulogerina--- ... 4, 6, 24; pi. 5 Biloculina murrhina..._...._._____.___._..... 30 Pararotalia------4, 5, 6, 29; pi. 7 Schlumbergerina...... ___..____..__..__ 14,31 Biloculinella globula...... _._.___._..... 16, 24; pi. 17 Ammomassilina alveoliniformis...._.__...... 14,23 bleeckeri, Bulimina...... __. 5, 6, 25; pi. 5 ammonoides, Operculina_.__..__..______16,29 Bolivina beyrichi...... ______...... 4, 6, 24; pi. 5 Amphimorphina californica....__..____._____ 4,6,23 choctawensis...... 2, 5,24 caduca, Spiroloculina...... 14,31 Amphistegina bikiniensis...... _.____..__ 2,23 compacta. __...__...... 16,24 /e»»ow«.-----.--- ...... 18,23,24 Calcarina spengleri...... ------13,18,25 fastigia...... ______._...... 4, 6, 24; pi. 5 californica, Amphimorphina.. ...__---.---- 4,6,23 madagascariensis _....______.____ 13,18,23 gardnerae.-----_-_-._...... 4,6,24 radiata...... ______18,23,24 californicus, Astacolus..._...------16,24 hantkeniana...... 16,24; pi. 18 calomorpha, Nodosaria . - 16, 28; pi. 18 papillosa...__..__....___._____.______18,23 minutissima...._...... 4, 6, 24; pi. 5 ampliapertura, Olobigerina..._.__..__ 3, 4,7,33; pi. 8 canariensis, Qloborotalia...... -- U nitida...... ___...... _...... 11,24 Cancris sagra..... 18, 25; pi. 19 ampullacea, Uvigerina....__..______6,18,32 oligocaenica....____...... 4, 6, 24; pi. 5 anguina arenata, Quinqueloculina..._____.___. 14,30 Candeina nitida-.------12, 20, 33; pi. 14 paula...___..._._...... __...... 6,24 carandetti, Cassidulina ------10,12, 25; pi. 13 angulata, Qaudryina triangularis...... 14, 27 plicatettamera...____._...... 5, 6, 24; pi. 5 Spiroloculina..-..______14,31 carapitana, Cassidulina-...---...... - 10,12,25 pseudopygmaea..._._...... _...... 16,24 Angulogerina albatrossi...... -._-_____.______18,24 carinatus, Cibicides------7, 26; pi. 7 pusilla...... 10,11, 24 byramensis...... 4, 6,24; pi. 5 carpenteri, Cycloclypeus -- 16, 26; pi. 17 rhomboidalis...... 6,16, 24; pi. 5 cooperensis ...... 4, 6, 24; pi. 5 Carpenteria hamiUonensis.. ------3,25 robusta___...... _..._..._..... 16,24 proteiformis. . - .__.. -- -- 20,25 vicksburgensis______.__ 4, e, 24; pi. 5 silvestrina...... ______...... 10,11, 24; pi. 12 s&- ...... 6,24 sinuata...... ___...__....___... 11, 24; pi. 12 Carterina spiculotesta-...._.. -...._ 16,25 angulosa, Cassidulina..._._...... __ 12, 25; pi. 13 spinescens...______...... 16,24 Cassidulina angulosa..------.._ 12, 25; pi. 13 Anomalina coronata...__..._.._. ...._ 20, 24; pi. 19 striatula..., . 16,25 carandetti------10, 12, 25; pi. 13 glabrata...... ______20,24 tortuosa...... 6,16, 25 carapitana------10,12,25 «rano*a ______4, 7, 24; pis. 6, 7 tricosta...... _.._...... 5, 6, 25; pi. 5 chipolensis------& maculosa ...... ______...... 20,24 tumida...... 5, 6, 25 delicata------12, 18, 25; pi. 18 wuellerstorfi.__..__. ...._.______29 vicksburgensis...... ___...... 4, 5, 6, 25; pi. 5 minuta ------12, 18, 25; pi. 18 apertura, Olobigerina______12, 33; pi. 14 zanzibarica....___._._...__...... 16, 25 pacifica --- - 12, 25; pi. 13 apicula, Quinqueloculina...__._..______14,3o (Loxostomum) limbata....._.._...__.. __ 16,25 sagamiensis -- 10, 12, 25; pi. 13 arenata, Quinqueloculina anguina____.._...__. 14,30 limbata costulata.._._._.__..__ ..--_ 16,25 subglobosa- -- 7, 12, 18, 25; pi. 13 arietina, Spirolina...._____.______._...... 16,31 mayori...... ______...... 16, 25 subtumida 12- 2B Articulina pacifica...... __..______14, 24 porrecta...____...... __.... 16,25 tricamerata------7, 25; pi. 7 sp- - ..______14, 24; pi.' 17 rostra...... ___...... ______..__ 6, 25; pi. 5 sp. A 7,25 Astacolus bradyi___.__....__..______ig, 24; pi. 18 sp. A-._.._--..-...... _...--__-_-.__ 6,25 sp. B. 7- 26 californicus...... __..__ _ 16,24 sp. B______6, 25; pi. 5 sp. C. 7' 26 planulatus.______.____ 16, 24; pi. 18 Bolivinella folium.._----_.____-.---.__ - 16,25 sp. D.._ 7- 26 Asterigerina marshallana__..__..___. _...... 2,6,24 Bolivinopsis cubensis...... 5, 6, 25; pi. 4 sp. E _ - - 10,12,25 Asterigerinata bracteata...... ___.._ 4,6,24 sp_.-_ 6 sp. 10,12,25 137 138 INDEX Page Page Elphidium advenum Continued Page Cassigerinetta. .. ._ ____..._..____. 14,5 cyclostoma, Chilostomella...______15, 7, 26; pi. 6 striatopunctatum...... __. 118, 27 chipolensis.... ______...__ 3, 4, 7, 33; pi. 8 Cymbalopordla tabellaeformis...... 18,26 sp_ 6,12,27 catenulata, Entosolenia squamosa.._. ___.... 29 Cymbaloporetta bradyi...... ______18, 26 Enantiomorphina sp_ ____-_.______6,27 Oolina squamota...... 6,29 squammosa. ______-__. 18,26 Entosolenia marginata lagenoides. -._.-.._... 27 Caucasina grata...... ____..... 5, 6, 26; pi. 4 squamosa catenulata.._. ...______.. 29 ceZso, Discorbis...... ______.. 28 D Epistomaroides polystomelloides...... 18, 27 Neoconorbina.. __...______.. 6,28 Epistomina elegans------...... _ 28 centralis, Globorotalia.._.._._.. ..__ 1, 3, 4, 33; pi. 3 danvillensis, Cibicides..------... ______------_ 26 Epistominella obtusa..... ______....___. 18,27 Chilo quembelina cubensis____-..._ 3, 7, 33; pi. 8 Cibicidina.....-----.- ...... 7,26 rugosa..... ______.______18,27 chilostoma, Karreriella. ...__.______6,28 Globigerina... -..------_-- 3, 4, 7, 33; pi. 9 tubulifera...... 18, 27 Chilostomella cyclostoma... .__.__.... 5, 7, 26; pi. 6 Globigerinetta ._....._._.___.__ 3, 4, 7, 33; pi. 8 Eponides duprei ciervoensis.------. 5, 6, 27; pi. 6 chipolensis, Cassidulina..-.-... .__....__. 5 Nonion...... ______3,33 kiliani...... 5,6,27 Cassigerinella...... _____ 3, 4, 7, 33; pi. 8 Darbyella sp__ 16, 26; pi. 18 ocalanus--. ....------__--______2,27 choctawensis, Bolivina.-..-...... ___...... 2,5,24 davidiana, Valvulina...... ______.._ 14,32 repandus.-.--...... _ 18, 27; pi. 19 Chrysalidinella earlandi...... 16,26 decorata, Spirillma...... 18,31 umbonatus.-..--..-.-.------..-..... 11 Chrysalogonium ciperense...... -..______.__ 5,6,26 dehiscent, Sphaeroidinetta...._....._..... 9,12,20,34 sp______.______- 6, 27; pi. 6 lanceolum...... _.______._.______5, 6, 26; pi. 4 delicata, Cassidulina...... 12, 18, 25; pi. 18 equisetiformis, Nodosaria..-----... .. 10, 11, 29; pi. 12 longicostatum...... ______2,5,6,26 Dentalina communis.-.------11, 26; pi. 12 exigua, Planispirina---...... __-_------29 tenuicostatum...._.._....._.__..______5,6,26 consobrina.... _._ _-_ _ - 28 Planispirinella...------... __ -. 16, 29 sp._---_ _-.____.___._.______.___ 6,26 cooperensis..... ______. ... . 6,26 eximia, Spiroloculina.._._._ __---_.____.. _ 14,31 Cibicidella variabilis.._.____. ____.______20,26 mucronata...... _.. .-__ 16, 26 Cibicides brevoralis...... __...... 7,26 tauricornis-...... 10,11,26 carinatus. ______7, 26; pi. 7 sp. A...._____._._._.______-----_ 11, 26; pi. 12 cicatricosus...._...... 12,20,26 sp. B_ .-.- -- 6,26 'ia, Bolivina..__...... 4, 6,24; pi. 5 danvillensis.-__._...... _____. 2f. sp. C_ . _- - - 6,26 ferussaci, Quinqueloculina.._..__... _.. ----- 14,30 floridanus... ______3, 7, 26 sp. D_.. -. - 6,27 fijimsis, Qloborotalia menardii---- 7, 10,12,33; pi. 15 havanensis.._._._...... 2, 3, 5, 7, 26; pi. 7 spp - 2,11,27 Orthomorphina..-.----.... 11, 12,29; pi. 12 lobatulus...... 7,12,20,26 (Dentalina) communis, Nodosaria...... _.._-.. 26 Siphonodosaria... ______. ..---_ 11, 29 macrocephalus.-.--.._..__....._._...... 2, 3, 26 denticulata, Pyrgo..... __.._ _. .. 16,30 fimbriata, Fissurina._..______...... __.. 6, 27; pi. 4 mayori..._....__ _.______. 20,26 striolata, Pyrgo... --- - 16,30 Lagena... ______.- --- 27 praecursorius...... _....___ 7, 26; pi.7 denticulogranulata, Spirillina. _ __ _ . 18,31 Fissurina alveolata.... __. ___ -__ - 11,27 pseudoungerianus.-..-..___._.. ..___ 7,20,26 difformis, Clavulina------14, 26; pi. 17 circulum..------..------.---.----- 11, 27; pi. 12 tuxpamensis...... __. ______2,3,26 Dimorphina striata... ___.---_-__-- _ 31 fimbriata...... 6,27; pi. 4 Cibicidina danvillensis....._._....__._._. __.. 7,26 Discorbina praecursoria ______------26 formosa--- 11, 27; pi. 12 cicatricosus, Cibicides....._...... __...... 12,20,26 rarescens.... ______--__------.. 29 globosa-. . 11, 27 ciervoensis, Eponides duprei...._..__._. 5, 6, 27; pi. 6 tabernacularis.-.------~~ - 28 lagenoides..------.------6,27 ciperense, Chrysalogonium...._._. ______5,6,26 Wrightii.-...... 31 spp.------... ----- __ .---- 6,27 circulum, Fissurina-... ______11, 27; pi. 12 Discorbis balcombensis.------6,27 flexuosa, Globorotalia tumida.-..- 9, 10,12,33; pi. 16 clara, Spiroloculina...__._._.____.__._ __._ 14,31 celsa.. ._ . - ...... 28 flintiana, Miliolinella oceanica...... ------14,28 Clavulina difformis....___.....____...__ 14, 26; pi. 17 fulva.....- ...... 28 Triloculina oceanica ------.....-. _._.---- 28 clericii, Rohulus.-._..______6,30 tuberculata australiensis.-..-...... 32 Flintina bradyana...... 16, 27; pi. 17 colei, Virgulina.---...__._.... ______5,6,32 disjuncta, Sphaeroidinetta- ______7,9,12, 34; pi. 15 floridana, Rosalina..------18, 30 communis, Dentalina-._._.______.___. 11, 26; pi. 12 dissimilis, Globigerina 3, 7, 33; pi. 8 Truncatulina...... _. ... .__-- 26 Nodosaria (Dentalina) ______26 distorqueata, Quinqueloculina.._.__ __.. . 14,30 floridanus, Cibicides.------3,7,26 Spiroloculina...-.______14,31 divaricata advena, Nubeculina...... 14, 29; pi. 17 floscula, Neorotalia.-...... ------2,28 compacta, Bolieina______16,24 Nubeculina...... ____ - 14,29 Rotalia... 28 concentrica, Mississippina.... ______-. 31 diversa, Hauerina.------...... ------14,28 fohsi robusta, Globorotalia...- 9, 10,12,33; pi. 16 Stomatorbina....__..____._.._._.__. 18, 31; pi. 19 dubia, Pegidia...... 18, 29; pi. 19 foliacea oceanica, Textularia...... _..---...--- 14, 32 concinna, Rosalina.______.__._. ______18,30 dupla, Textularia...__------.------14,32 Textularia...... ___----- 14,32 concinnus, Tretomphalus...... 18,32 duprei ciervoensis, Eponides...... ___. 5, 6, 27; pi. 6 folium, Bolivinetta- _...... -- .------16,25 conglobatus, Olobigerinoides..... _..._ 12, 20, 33; pi. 14 durrandi, Massilina.. ______.. - 14, 28 Spiroloculina...------... - _-- 14, 31 conglomerata, Globigerina--. 3, 7,11,12,33; pis. 2,8,14 Miliolina.______- ...... 28 formosa, Fissurina. ... ___ - 11, 27; pi. 12 conica, Alabamina...... _.. 2, 4, 6, 23; pi. 6 Lagena.- __-_------27 TerteZorio-...... 14,32 E foveotota, Spiroloculina------... ------14,31 Conicospirillina semiinvoluta..__...... 18,26 frondescens, Sagenina....- __--.__ 14, 31; pi. 17 consobrina, Dentalina...... __...___._.... _.. 28 earlandi, Chrysalidinella...... -.--.. ___- - 16,26 Frondicularia robusta repanda.------16, 27; pi. 18 Nodosaria...... __.______6, 28 TrUoculina...... - . - - 14,32 fulva, Discorbis ------28 cooperensis, Angulogerina______. 4,6,24; pi. 5 echinatus, Siphoninoides...... -- -- 18,31 Neoconorbina-..------'- 18, 28 Dentalina..... ______6, 26 Eggerella firadi/L.------10,11, 27 Cornuspira planorbis...... ___...____ 16,26 subovalis...... ---_ .. 10 O coronata, Anomalina. ..______.__ 20,24; pi. 19 eggeri Globigerina__....------_.. -- - 20,33 gardnerae, Bolivina...- ... - 4,6,24 costata, Bulimina. ______16,25 Ehrenbergina albatrossi... - ---- 12, 27; pi. 15 Marginulina... ______16,28 Gaudryina triangularis angulata..-....------14, 27 elegans, Epistomina..------28 trullissata...------14,27 costulata, Bolivina (Lcxostomum) limbata.-.-- 16,25 Hoeglundina...... _ -- 20,28 costulatum, Loxostoma limbatum....______..__ 25 (Siphogaudryina) rugulosa...-...... - 14,27 Ellipsoglandulina labiata.-______2, 5, 6,27 siphonifera... __ -- - 14,27 crassa subcuneata, Quinqueloculina-.--______30 Ellipsonodosaria adelinensis. _--_-.------31 crispum, Elphidium.... ______18,27 transversaria.. ___-.------14, 28 curvatura..--. ___ . .. -- -- 31 Gavelinopsis praegeri- ___ - - 18,28 Cristellaria rotula. ______30 nuttalli...... 31 crustata, Neoconorbina...______18, 28; pi. 18 gibbera, Lagena...------29 recta.------.-.------.---.------31 Oolina - 6, 29; pi. 4 cubensis, Bolivinopsis__...... ______5, 6, 25; pi. 4 subspinosa.-...... _ __.- -- 31 Chiloguembelina____.___.. ______3, 7, 33; pi. 8 girardana, Gyroidina------6, 28; pi. 6 Ellipsopleurostomella stewarti..... -... -- 27 Rotalina. _ - - -- 28 Cycloloculina--.______5, 6, 26; pi. 7 sp. .. 12, 27; pi. 12 Pleurostomella.--.._.______.. 2, 5, 6, 30; pi. 4 glabra, Marginulina _._ - _ - 6,28 glabrata, Anomalina.----.------20,24 alazanensis-.----______30 ellipticus, Peneroplis-.------... ------16,29 Spiroplectoides---.-..__._._.._._.___...... 25 elongatus, Olobigerinoides---.-----.-.---.------20,33 Glandulina labiata,..------27 culter, Osangularia..______2, 6, 10, 11, 12, 29; pi. 13 Elphidium advenum...------18,27 Globigerapsis index..------1, 3,4, 33; pi. 2 curvatura, Ellipsonodosaria______--_. 31 crispum.-... ------____ 18,27 Globigerina ampliapertura...... ----- 3, 4, 7, 33; pi. 8 Stilostomdla._._.__._._._..._.__.._.. 6, 31; pi. 4 hyalocostatum...... 18, 27; pi. 18 ampliapertura zone-. ------3 apertura ...... 12, 33; pi. 14 Cycloclypeus carpenteri.....__._....._.. 16, 26; pi. 17 jenseni...... __.--._ -- 18, 27 bilobata...... ------34 Cycloloculina cubensis---.-.-__.__ 5, 6, 26; pi. 7 simplex.... _-___ ------18,27 INDEX 139 Globigerina Continued Page Page conglomerate...... 13, 7, 11, 12, 33; pis. 2, 8, 14 Halkyardia bikiniensis...... ___.._.. 13,5,6,28 lobatulus, Cibicides-- .-- -.-. 17,12,20,26 danvillensis....-----__...__ 3, 4, 7, 33; pi. 9 hamtitonensis, Carpenteria.-.-- ______3,26 longicostatum, Chrysalogonium-.----- __- 2,5,6,26 dissimilis______-_.__._.____ 3, 7, 33; pi. 8 hantkeniana, Bolivina-. ______16, 24; pi. 18 longiscata, Nodosaria..... ______.__ 6,29 eggeri.-.-- ...... 20,33 Hantkenina... ._._....______._-______-__- 1,3,4 Loxostoma limbatum costulatum - _ __ _ _.-_ 25 gortanii... ______2, 3, 4, 7, 33; pis. 2, 10 alabamensis-.... __-______1,3,34 mayori-.--. ____.__-____--_-_____-_._- 25 hexagona... ______12, 33; pi. 14 inflata.------1, 3, 4, 7, 34; pis. 1, 8 porrectum -_--______...___ 25 increbescens...... ______3, 7, 33; pi. 11 Hastigerina pelagica______12, 34; pi. 15 rostrum.------.--- ______._____ 25 inflata.--... ______.... ______11 Hauerina diversa..-.. ______.._...... 14,28 (Loxostomum) limbata, Bolivina------_ 16,25 nepenthes...-. 7, 9, 10, 12, 13, 20, 21, 22, 33; pi. 14 involuta... ______14,28 limbata costulata, Bolivina-______16,25 nepenthes zone.-___-______23 muletti ---___--___-____._____.______14,28 mayori, Bolivina...... ______._. 16,25 oligocaenica.------33 pad flea.------___-______14,28 porrecta, Bolivina..- ______-__ 16,25 opima nana______3, 7, 33; pi. 9 havanensis, Cibicides.... _____ 2, 3, 5, 7, 26; pi. 7 ros.ro, Bolivina--- ______6, 25; pi. 5 opima zone.-..-_____-_-______-._- 3 Heterostegina suborbicularis.__..._____.---.- 16,28 ouachitaensis se«jfe-______.-______-_ 33 hexagona, Globigerina_ .____._____ 12, 33; pi. 14 M pera______._ 2, 3, 33; pi. 2 hirsuta, Globorotalia.------_ 11, 12, 20, 33; pi. 16 sellii.-.------3, 7, 33; pi. 10 hispida, Uvigerina.__..______10 macrocephalus, Cibicides...... __ 2,3,26 zone..--.-----______-______- 3,4 Hoeglundina elegans..-...... ______20,28 maculosa, Anomalina. ______.___ 20, 24 seminulina.. ______..______34 Homotrema rubrum______.--__. 20,28 madagascariensis, Amphistegina. _...... 13,18,23 senilis_ -______3, 7, 33; pi. 11 hyalocostatum, Elphidium...... _-___ 18, 27; pi. 18 maorica, Rosalina...... _.__. 29 spinuloinflata.. ___----.______33 maoricum, Nonion------3, 5,6,29; pi. 6 suteri- . ______.-__ 3, 7, 33; pi. 9 I marginalis, Sorites.-..--...... _-_---_-____ 16,31 tripartitatapuriensis-- __--_____. 3, 7, 33; pi. 11 marginata lagenoides, Entosolenia...... 27 turritilina.-. _-____-______-.---_____-..____ 33 incisura, Triloculina... ___... ------14,32 Marginopora vertebralis...... __-__ 13,16,28 venezuelana.--.--- ______2,3,4,11 increbescens, Globigerina....--... ._--_ 3, 7, 33; pi. 11 Marginulina costata...-- __.______16,28 yeguaensis--- ______2, 3, 4, 7, 33; pis. 2, 8 index, Globigerapsis.... ______1, 3, 4, 33; pi. 2 glabra-... ____ ....._.._____ 6,28 Globigerinatella insueta zone_____-.-_____ 23 Globigerinoides ______- __ 33 sublituus multicamerata. ___ --______32 insueta/Globigerinoides bispherica subzone.- 23 inflata, Globigerina-- .______-_.--_---______11 marshaUana, Asterigerina.--..- _____... 2,6,24 Globigerinella aequilateralis.... __.____ 12,20,33 Hantkenina...-.--- ____ 1, 3, 4, 7, 34; pis. 1,8 Spiroloculina... _._.__ 14,31 danvillensis---- ______3,4,7, 33; pi. 8 inhaerens, Acervulina..------.. 20,23 Triloculina... _.-____-______-__-_.____ 14,32 Globigerinita glutinata.. ___...... ______12,20,33 insecta, Nodosaria...------11,29 martii, Valvulina..--. ------__.___ 2,32 Globigerinoides conglobatus ______12,20, 33; pi. 14 involuta, Hauerina----- _.. - .-_--_- 14,28 Massilina alveoliniformis------______23 elongatus- ______20,33 Triloculina...------...... ____---__ 14,32 durrandi______-_-______14,28 index....--- ______-______. 33 irregularis, Triloculina------.__ - 14,32 secans-.------14,28 ruber...- ______.____._ 20,33 reticulata.. _-. ______14,28 sacculifer.------12,20, 33; pi. 14 mayeri, Globorotalia. ______20 trilobus.. -----______.-..._ 7,12, 33; pi. 11 mayori, Bolivina (Loxostomum) -....____.. 16, 25 Globoquadrina altispira_ _ _ _ _ 7,9,12, 33; pi. 14 japonicum, Nonion. ______._ 20,29 Cibicides_____.______.__.__ 20,26 Globorotalia canariensis...-.... ______11 jenseni, Elphidium...... ______...- 18,27 Loxostoma.-.-- _. --__.__ 25 centralis-.- ...... ______1,3,4, 33; pi. 3 RotaJiammina...---- . ______16,31 fohsirobusta..-... ______.__ 9,10,12, 33; pi. 16 menardii fijiensis, Globoroialia___ 7,10,12,33; pi. 15 hirsute,------..------11,12,20, 33; pi. 16 Globorotalia ...... 9,10,13,20,33 mayeri... _-______-____-__.______20 Karrerietta bradyi..... 10, 11, 28; pi. 12 ungulata, Globorotalia.-....----- 10,12,33; pi. 16 zone...- -. ...__.._.__-.___. 13,20,21 chtiostoma....------______6,28 menardii-tumida transition form, Globorotalia.. 7, / Globigerina nepenthes subzone..___._- 9 siphonella__...._.______10 9,10,12,33; pi. 16 menardii... ___...... ______9,10,13,20,33 sp..._ - 6,28 mera, Bolivina plicatella.__.___._ ____ 5,6,24; pi. 5 ftjiensis------.-..-- 7, 10,12, 33; pi. 15 kerimbaensis, Textularia - ___ 14,32 micens, Rosalina ____ _ -______- ... 18,31 ungulata.. . .___ 10,12, 33; pi. 16 kerimbatica, Trilocvlina..- .. _.__ 14,32 micrum, Nonion... ------____.____ ... 5,6,29 zone--_-_ ------____--__..--_-__ 13,20,21 kttiani, Eponides...----- ___-._ .---__-__- 5,6,27 MUiolina durrandi---.- _ _ __ 28 menardii/Globigerina nepenthes zone... 9 Pulvinulina____....___._-_____--- 27 secans.------_-___ . 28 tumida transition form.. 7,9,10,12, 33; pi. 16 kochi, Sphaeroidinella - - 7, 9, 12, 34; pi. 15 MiliolineUaaustralK---.------14,28 opima nana... ______.____._ 33 labiosa - ___ - _ 14,28 opima zone...____.______3 oceanica...- ______14,28 spinuloinflata--- -...... 2,3, 33; pi. 3 flintiana.------_._ -___ 14,28 spinulosa. -. . ..._...... 2,3, 33; pi. 3 labiata, EllipsoglanduHna.------2,5,6,27 milletti, Buliminella..------16,25 tumida --- - __ 10,12, 20, 33; pi. 16 Glandulina... __--____-_.__ 27 Hauerina------14, 28 flezuosa...... 9,10,12, 33; pi. 16 Polymorphina....-- -..___... -- 30 minuta, Cassidulina ------. 12,18, 25; pi. 18 wilcozensis - -. ...__...... 2,3, 34; pi. 3 Pyrulina.... - 10,11,30 minutissima, Bolivina...... ----- _--_ 4, 6, 24; pi. 5 Globorotaloides suteri-- ______...... 33 labiosa, MUiolineUa. . . 14,28 Nonionella.---.------6,29 globosa, Fissurina.. ------______n 27 Triloculinella.------28 mira, Rotorbinella.------18,31; pi. 18 globula, Biloculinetta_..______16, 24; pi. 17 Lagena alveolata. ______-_------______--_ 27 Mississippina concentrica... ____-_-_---_ 31 Gypsina.- -- -- ______3,20,28 fimbriata... ------27 mucronata, Dentalina.....- ___ _-______. 16,26 glutinata, Globigerinita.- ______._ 12,20,33 formosa.-----.------27 multicamerata, Marginulina sublUuus.. - - 32 gortanii, Globigerina _____ 2, 3, 4, 7, 33; pis. 2,10 gibbera..------29 Vaginulinopsis sublituus. ______5,6,32; pi. 4 gracilis, Lagena...... _.__._.______11,28 gracilis--. ______.-.__ _ 11,28 murrhina, Biloculina__ _-__ ------30 granosa, Anomalina.... .______._ 4, 7, 24; pis. 6 7 lagenoides, Entosolenia marginata. .-__._____. 27 Pyrgo- 11,30 grata, Buliminella______.______' 26 Fissurina.-. ______._.______- 6,27 Caucasina... ______.-___.-__-__-_ 5,6, 26; pi. 4 Lagenonodosaria scalaris.- _--_.______16,28 N Gypsina globula.______---.____... 3 20 28 lamarckiana, Gyroidina.------6,11,12,28 vesicularis ______20,28 Quinqueloculina----. ___._____- 11,14,30 nana, Globigerina opima .... __ 3,7,33; pi. 9 Gyroidina girardana.-.--.- ______6, 28; pi. 6 Lamarckina torrei_____.._.___..-_-- 31 Globorotalia opima------33 lamarckiana.--__- ______6,11,12 28 lanceolum, Chrysalogonium -__._-.-____ 5, 6, 26; pi. 4 naranjoensis, Pleuroslomella .._-...--.--- 5,6,30 nttidula______2,6,28 larvata, Planorbulinella...... 7,20,29 Neoconorbina celsa,. -__--__------_------6,28 soldanii______n 12 28 Laticarinina pauperata...... ______-_- 12,28 criutata.. 18,28; pi. 18 Spp ______.---__-___.--______' 'n Lepidocyclina.------7 fulva 18,28 lessonii, Amphistegina-.. ______18,23,24 patettiformis-. ------18,28 H Liebusella bradyi__-... ______._____ 14,28 tabernacularis.------18,28 limbata, Bolivina (Loxostomum) __-______- 16,25 terquemi.------18,28 hadai, Spiroloculina______14,31 costulata, Bolivina (Loxostomum)... ____- 16,25 tuberocapitata------18,28 Haddonia torresiensis .-_-__---_.______.- ___ 15 28 limbatum costulatum, Loxostoma-- ______25 Neorotaliafloscula------2,28 haliotis, Bronnimannia...... _____ 18,25; pi. 19 limbosus, Robidus.. . .____._.______16,30 neostriatula, Quinqueloculina - _ _- 14,30 140 INDEX Page Page Quinqueloculin a Continued Page nepenthts, Globigerina.... _- -_ 17, parkeri, Quinqueloculina...... 114,30 114, 30; pi. 17 9,10,12,13,20,21,22,33; pi. 14 Parrina bradyi...... _.-_.-___.______- 16,29 crassa subcuneata. 30 nicobarensis, Vulvulina..... ______. ____ 10 parva, Baggina..... _..--_--__-_----.- _.___ 4,6,24 14,30 nitida, Bolivina...... --______---__ 11,24 parvula, Orthomorphina... _____ 2, 6,12, 29; pi. 12 ferussaci...... ------_ .. _ _ .. 14,30 Candeina...... ______12,20,33; pi. 14 patelliformis, Neoconorbina-.------18,28 lamarckiana...... 11 14,30 nitidula, Gyroidina...... _.______. 2,6,28 Patellinaadvenaaltiformis..------18,29 neostriatvla------_ ...... 14,30 Rotalia...... ______28 paula, Bolivina...------.------6, 24 parkeri-..--- ... ------______. 14,30 Nodogenerina roftri ------29 Paumotua terebra...... _---_-_.-.------18, 29 poeyana..------...... _ .. 14, 30; pi. 17 Nodosarella acra...... 6,27,28 pauperata, Laticarinina.....------12,28 polygona .... ______.. _ _.._ _ ...... 14,30 robusta...... _...... _._.... 5,6,28 Pegidia dubia...... 18, 29; pi. 19 14,30 subcylindrica... ______....____- 5,6, 28 pelagica, Hastigerina...... ______12, 34; pi. 15 14,30 Nodosaria affinis... -_------.-_.___------.._ 2,28 Peneroplis ettipticus...... 16,29 subcuneata ... ____-- _ .-.. _ .. -. 14, 30; pi. 17 calomorpha..... ______16, 28; pi. 18 proteus...... ----...... 16,29 sulcata ... .----___----_----_ -. - __ 14,30 consobrina...... _____.._.__._ 6,28 pera, Globigerina...... - 2,3,33; pi. 2 tubus...... -. ------___ -. _ -. 14,30 equisetiformis______10, 11, 29; pi. 12 perversa, Nodosaria...... -----...... 29 R insecta...... ____.....___------11,29 Orthomorphina...... 11,12, 29; pi. 12 longiscata______....__.___ 6,29 Placopsilinasp...... ______16, 29; pi. 17 radiata, Amphistegina...... ______18,23,24 perversa...... _.. 29 Planispirinaezigua.------... ------29 papillosa, Amphistegina...... 18,23 skobina.-...... ____------_..._ 10,11,29 Planispirinetta exigua...... --...... ------16,29 raphana, Siphogenerina. ..--______-___._.. 18,31 tauricornis...... 26 Planodiscorbis rarescens...... -.-... ------18,29 rarescens, Discorbina...... ------_..___ 29 tosta...... 6,29 planorbis, Cornuspira...... 16,26 Planodiscorbis--.-.... .______18,29 vertebralis______. -.-...._-.-.._- 6,29 Planorbulina acervalis... --. .-_.. 20,29 recta, Ettipsonodosaria...... 31 (Dentalina) communis....-...... _._.. 26 Planorbulinellalarvata..-...... -...- 7,20,29 Staostomella...... 5,6. 31; pi. 4 Nonion boueanum....---.... _...... 20,29 Planorbulinoides retinaculatus...... - ... 20,29 Rectobolivina bifrons striatula...... 16,30 danvillensis...... 3,33 planulatus,Astacolus...... 16, 24; pi. 18 Rectoglandulina sp_ _._------__... 6,30 japonicum...... ____.______20,29 Planulina wuellerstorft...... 7,12,29 Reophax. -.-_ ------__._ 31 maoricum...... ______3, 5, 6, 29; pi. 6 planus, Tretomphalus.--...... 18,32 repanda, Frondicularia robusta...... 16, 27; pi. 18 micrum...... __..._..__ 5,6,29 Pleurostomella alazanensis cubensis...... 30 repandus, Eponides...... 18, 27; pi. 19 paciflcum...... _--____._--__...... 20,29 alternans...... 11, 12, 29; pi. 12 reticulata, Massilina secans...... ------_ 14,28 pompilioides-...... 12,29 bierigi ...... 5,6,30 retinaculatus, Planorbulinoides...... 20,29 Nonionella minutissima...... __._--______. 6,29 brevii...... 11,12,30 Reussella pulchra...... 16, 30; pi. 18 translucens...... ____.____-__.. 23 cuberutt...... 2, 5, 6, 30; pi. 4 simplex...... 12,16,30 sp...... 7,12,29 naranjoensis...... 5,6,30 sp. 6,30 novozealandicum, Astrononion...... 12, 24; pi. 12 vicksburgensis.-..------25 revertens, Spirttlina, vivipara...... 18,31 Nubeculina dimricata...... 14,29 sp______6, 30; pi. 4 rhombdidalis, Bolivina...... 6,16, 24; pi. 5 divaricataadvena-.------... ____. 14, 29; pi. 17 plicatella mera, Bolwina...... 5, 6, 24; pi. 5 Robulus clericii...... 6,30 nuttalli, Ellipsonodosaria...... __.___._.... 31 poeyana, Quinqueloculina...... 14,30; pi. 17 limbosus...... 16,30 StilostomeUa...... ____... 2,6,31 polygona, Qvinqueloculina...... 14,30 orbicularis...... ___ 16, 30; pi. 18 Nuttallides trumpyi.... .__..._... 2, 29; pi. 1 Polymorphina labiata...... 30 rotulus...... ____ 6,30 Polymorphinetta paciftca...... -...-..... 16,30 vortex...... ------...... 16,30 O polystomettoides, Epistomaroides...... 18,27 sp. 2,6,11,30 obliquiloculata, Pulleniatina.-... 11, 12, 20, 34; pi. 14 pompilioides, Nonion...... ------12,29 robusta, Bolivina...... --. ___ -..___ 16,24 oblonga, Triloculina...... 14,32 porrecta, Bolivina (Loxostomum) .._------16,25 Globorotalia fohsi..--.------9,10,12, 33; pi. 16 obtusa, Epistominella...... _ 18,27 Uvigerina...... ------...-.-.------18,32 Nodosarella ...... 5,6,28 ocalanus, Eponides...... ------2,27 porrectum, Lozostoma...... _------25 repanda, Frondicularia...... 16, 27; pi. 18 oceanica flintiana, MUiolineUa... ______-- 14,28 praecursoria, Discorbina...... ------26 rohri, Nodogenerina...... ------29 flintiana, TrUoculina...... ______..... 28 praecursorius, Cibicides...... 7, 26; pi. 7 Orthomorphina.....-...-...... ___ 2,29 Miliolinetta...... ______14,28 praegeri, Gavelinopsis...... -...--.-. 18,28 Rosalina concinna...... 18,30 Textularia joliacea...... --.-....._...... 14,32 proboscidea, Uvigerina...... ------10,12,32 floridana...... ______18,30 Triloculina...... _..._._...... 28 vadescens, Uvigerina...... -...... 12,18,32 maorica...... 29 oligecaenica, Bolivina. ..------...... 4, 6, 24: pi. 5 proteiformis, Carpentaria.... _ __...------. 20,25 micens...... -....--.. _... 18,31 Globigerina....----... .._...... 33 Proteonina...... ------31 rugosa...... _... 18,31 Oolina gibbera______.__ 6, 29; pi. 4 sp...... - 31 wrightii...... __. 6,31 squamosa catenulata...... 6,29 proteus, Peneroplis...... - 16,29 sp.. 2,31 Operculina ammonoides...... -___-___.... 16,29 Pseudoparrella rugosa...... --- ... ------27 ros.ro, Bolivina (Loxostomum)...... 6, 25; pi. 5 opima nana, Globigerina... -______-- 3, 7, 33; pi. 9 pseudopygmaea, Bolivina...... 16,24 rostrum, Lozostoma...... - - 25 nana, Globorotalia...... ------....-....._ 33 pseudoungeriana, Truncatulina...... 26 Rotalia floscula...... ______.___ 28 orbicularis, Robulus...... _.__ 16, 30; pi. 18 pseudoungerianus, Cibicides...... 7,12,20,26 nitidula...... ___-__-____- ... 28 Orbulina bUobata...... _..._._____ 7,12,34 pulchra, Reussella...... ------16, 30; pi. 18 Rotaliammina mayori.... ------____ 16,31 suturalis.....-----.----- . 7, 12, 13, 34; pi. 15 pulchrus, Borelis...... ------. 16,25 Rotalina girardana...... 28 universa....------...-----...... 12,20,34 Pulkniabuttoides. ------7,12,30 Rotorbinella mira...... __.. 18, 31; pi. 18 Oridorsalis umbonatus.-----. 2, 6,11, 12, 29; pis. 6,13 sp_ - - 7,12,30 rotula, Cristellaria ...... -.. _____ 30 Orthomorphinafijiensis.------11,12, 29; pi. 12 Pulleniatina obliquiloculata..- - 11, 12, 20, 34; pi. 14 rotulus, Robulus...... __-----__._... 6,30 parvula...... 2, 6, 12, 29; pi. 12 Pulvinulina ktiiani.... ------27 ruber, Globigerinoides...... -...... ------20,33 perversa... ____. ..._..... 11, 12, 29; pi. 12 Pulvinulinella bengalensis...... ------10 rubrum, Homotrema...... 20,28 rohri...... ------.-.-.-.-.-.--...... 2, 29 pusilla, Bolivina...... 10,11,24 rugosa, Epistominella...... -...... 18,27 Osangularia bengalensis...-_-______-_-______-- 11 pusUlum, Astrononion...--.--... - ---- 7, 24; pi. 6 Pseudoparrella...... ---...... 27 cuUer.- ...... 2, 6,10,11,12, 29; pi. 13 Pyrgo denticulata...... __-_-- .---___-__ 16,30 .Ro-O-ma..------18,31 ouachit.aensissenilis. Globigerina...... 33 denticulata striolata. .------...... - - 16,30 Spiroloculina.... ______14,31 ovata, Bulimina...... 6, 25 murrhina------11,30 rugvlosa, Gaudryina (Siphogaudryina)...... 14,27 sp...... _... --_- 2,6,30 Pyrulina labiata...... 10,11,30 paciflca, Articulina...... ------_.-...... 14,24 Saccammina sp.- -- - _____--- __ 14,31 Cassidulina. .--.-.----...... 12, 25; pi. 13 sacculifer, Globigerinoides...... ------12, 20, 33; pi. 14 Hauerina.... .____-_____._-__.-______14, 28 sagamiensis, Cassidulina...... 10,12, 25; pi. 13 Polymorphinella...... --...... 16,30 Quinqueloculina agglutinans.... ------14, 30; pi. 17 Sageninafrondescens...-.-...... _ 14, 31; pi. 17 paciflcum, Nonion...... W,W anguina arenata.... ------__ 14,30 sagra, Cancris ...... ____ 18, 25; pi. 19 papillata, Sphaeridia. _____...... _-_ 18,31 apicula..-.... _.__-_____-_------14,30 Saracenaria sp.-_-_------6, 31; pi. 4 papttlosa, Amphistegina radiata____.... __ 18,23 berthelotiana...... 14,30 scalaris, Lagenonodosaria...... 16,28 Pararotalia byramensis...... __-__ 4, 5,6, 29; pi. 7 _.---. ------14,30 Schlumbergerina alveoliniformis...... ------14,31 INDEX 141 Page Page Triloculina Continued Page secans, Massilina--- ______-- ---. 114,28 Streblus beccarii- - --. . 118, 31; 32, pi. 19 subgranulata.- ______116,32; pi. 17 MUiolina.- ...__.______-_ . - 28 beccarii tepida______18,32 subplanciana.. __ . ______16,32 reticulata, Massilina----- ______14,28 striata, Dimorphina.- _-._-_ __ __ 31 terquemiana.. ______16,32 sellii, Globigerina .------3, 7, 33; pi. 10 Siphogenerina.. _____---5,6,11,12,31; pi. 5 transversestriata------__ 16,32 semialata, Textularia.______14,32 Vertebralina-...------__.___-__ 16,32 tricarinata- ______T _____ 16,32 semicostata, Bulimina- ______2, 5, 6, 25; pis. 1, 5 striatopunctatum, Elphidium.. _ ___.-._. 18,27 trigonula.. ______16,32 semiinvoluta, ConicospirUlina...... 18,26 striatula, Bolivina.------16,25 sp. A______6,32 seminuMna, Globigerina------...______34 Rectobolivina bifrons- ______16,30 sp. B._------....-.---...... 2,32 Sphaeroidinella ------7, 9,12, 34; pi. 15 striolata, Pyrgo denticulata. ... ______16,30 Truoculinellalabwsa..------28 seminulum, Quinqueloculina..-- ____ _ 14,30 subarenaria, Quinqueloculina------______14,30 tripartita tapuriensis, Globigerina____ 3,7,33; pi. 11 senilis, Globigerina------.--- 3, 7, 33; pi. 11 subcuneata, Quinqueloculina....__.__ 14,30; pi. 17 truttissata, Gaudryina.-- _--.-.....___ 14,27 Globigerina ouachitaensis. ______33 Quinqueloculina crassa. _-______30 trumpyi, Nuttallides. ____..______2,29; pi. 1 septata, Buliminetta. ------6,10,11,25 subcylindrica, Nodosarella. ______.______. 5,6,28 Truncatulinafloridana-.-- ______26 seriata, Siphogenerina-- ..._.______5 subglobosa, Cassidulina- _____ 7,12,18,25; pi. 13 pseudoungeriana..-- --__-______26 silvestrina, Bolivina______._ 10, 11, 24; pi. 12 subgranulata, TrUoculina.. ...______16,32; pi. 17 unjeriana.-- ______.---_____ 26 simplex, Elphidium------______._.. 18,27 sublituus multicamerata, Marginulina..__--___- 32 tuberculata australiensis, Discorbis. ___--._. 32 Reussetta------._.______-_._._.____ 12,16,30 multicamerata, Vaginulinopsis._..__ 5,6,32; pi. 4 tuberculatolimbata, Spirillina ------.... _ ___ 18,31 sinuata, Bolivina_-______--...._____ 11, 24; pi. 12 suborbicularis, Heterostegina______16,28 tuberocapitata, Neoconorbina--... .___.__ 18,28 (Siphogaudryina) rugulosa, Gaudryina.- _____ 14,27 subovalis, Eggerella. .._-______.__-- 10 tubulifera, Epistominella _._____.-.______18,27 siphonifera, Gaudryina- ______14,27 subplanciana, TrUoculina. .___.._____.__._ 16,32 tubulosa, Siphonina.-. .----__-______18,31 transversaria, Gaudryina..------______14,28 subspinosa, Ellipsonodosaria.------31 lubus, Quinqueloculina____-__._____ 14,30 Siphogenerina raphana. ___-_-______.__ 18,31 StilostomeUa... -- . - --- - 2,5,6,31 tumida, Bolivina--. ______.._-..__ 5,6,25 seriata.-- ___. ______5 subtumida, Cassidulina---- ___--_-.___ 12,25 flexuosa, Globorotalia- _____ 9,10,12,33; pi. 16 striata.------. ------5, 6, 11, 12, 31; pi. 5 sulcata, Quinqueloculina------______14,30 Globorotalia ------10, 12,20,33; pi. 16 sp. 6,31 suteri, Globigerina.-.. ______.__ 3,7,33; pi. 9 turritilina, Globigerina--- ______33 siphonella, Kaneriella ...______.__...... __ 10 Globorotaloides ______.._.__ 33 tuxpamensis, Bulimina. ______2,25 siphonifera, Gaudryina (Siphogaudryina)...--- 14,27 suturalis, Orbulina------___. 7,12,13,34; pi. 15 Cibicides ------2,3,26 Svratkinaaustraliensis..------______18,32 Siphonina tubulosa...... _ __ _ _ ... _ 18,31 U Siphoninoides echinatus . . . . __ . ______18,31 Siphonodosaria fljiensis ______11,29 umbonatus, Eponides.-.-- -______11 skobina, Nodosaria-- ______10,,11,29 tabettaeformis, Cymbaloporella- ______18,26 Oridorsalis------__..__._ 2, 6,11,12, 29; pis. 6,13 soldanii, Gyroidina----- ___ _ .______11,,12,28 tabernacularis, Discorbina. _._--.______28 ungeriana, Truncatulina.. _-_.-_-______26 Sorites marginalis.------______16,31 Neoconorbina...-- ______18,28 ungulata, Globorotalia menardii___ 10,12,33; pi. 16 spengleri, Calcarina.. ______13,18,25 tapuriensis, Globigerina tripartita___ 3,7,33; pi. 11 universa, Orbulina..------_ 12,20,34 Sphaeridia papittata ...______18,31 tauricornis, Dentalina.-- _-_____---_._ 10,11,26 Uvigerina ampullacea... ______6,18,32 Sphaeroidina bulloides------______12,,18,31 Nodosaria______.--.______.__ 26 hispida------.-----....-----.-- 10 Sphaeroidinella------______9, 10 tenuicostatum, Chrysalogonium.---- ____.___ 5,6,26 porrecta------18,32 dehiscens .. ______..._ _ _. _ 9,12,,20,34 tepida, Streblus beccarii______18,32 proboscidea--.------10,12,32 disjuncta... ------...__.____ 7,9,12,34; pi. 15 terebra, Paumotua______._ 18,29 vade&cens------______12,18,32 kochi... ------7, 9, 12, 34; pi. 15 terquemi, Neoconorbina... ______.______18,28 V seminulina ______7, 9, 12, 34; pi. 15 terquemiana, TrUoculina------______.-_-_ 16,32 sphaerulata, Baculogypsina _ --_-______13,,18,24 Textularia agglutinans-.. ______14,32 vadescens, Uvigerinaproboscidea..-- ____ 12,18,32 spiculotesta, Carterina... ____ _. ______16,25 alveata.. ______14,32 Vaginulinopsis sublituus multicamerata. 5, 6,32; pi. 4 spinata, TrUoculina-- _ -______14,32 conica.--. ___.______.______14,32 sp. ______2,32 spinescens, Bolivina.----- ______16,24 dupla.. .-______._._.-_-_-_-._.______14,32 Valvulina davidiana .- __- _-_- 14,32 spinosa, Vulvtilina-. ______6,10,,11,33 foliacea. ______14,32 martii-.------2,32 spinuloinflata, Globigerina ______33 oceanica.------_____.__...... _ 14,32 Valvulineria sp.______2,32 Globorotalia ------2, 3, 33;; pi. 3 kerimbaensis..----- ______-__.__ 14,32 variabUis, CibiddeOa.- . 20,26 spinulosa, Globorotalia ....______2, 3, 33;; pi. 3 semialata.... _._____-_-_.______. 14,32 venezuelana, Globigerina------______2,3,4,11 Spirillina decorata __ _------______18,31 torrei, Lamarckina.- ______...__._--.__ 31 verneutti, Stilostometta.-..-- 2, 6,11, 12, 31; pis. 4,12 denticulogranulata ... ______18,31 Stomatorbina ______------_ 2,5,6,31; pi. 1 Vertebralina striata....------16,32 tuberculatolimbata ... ______18,31 torresiensis, Haddonia.--.- ______16,28 vertebralis, Marginopora___ -___ . 13,16,28 vivipara.- ...... is, 31 tortuosa, Bolivina-- ______6,16,25 Nodosaria.... _____ -_____-___ 6,29 revertens ..._.. _ _ __ -.-.__.______18,31 tosta, Nodosaria....______.__.___ 6,29 vesicularis, Gypsina.--- -_-_---_ _ -___ 20,28 Spirolina acicularis ______16,31 totomiensis, Baggina. ______18,24; pi. 19 vicksburgensis, Angulogerina.-. 4, 6,24; pi. 5 arietina. . _____._____.__ le^si translucens,Alliatina--.- __-______---. 20,23 Bolivina...- ______4, 5,6,25; pi. 5 Spiroloculina angulata.. .-----_-_.______14,31 NonioneUa. _..----.____...... _. 23 Pleurostomella.. __ .. ______25 caduca..-- ___ .__.._.. ______14,31 transversaria, Gaudryina (Siphogaudryina)..... 14,28 Virgulina colei.. ------5,6,32 clara... ______14.31 transversestriata, TrUoculina. ______-_____. 16,32 zetina ------5, 6,32; pi. 5 communis-- ______14,31 Tretomphalus concinnus.. ______--__ 18,32 vivipara revertens, SpirUlina.------.- 18,31 eximia. ------______14,31 planus..------,-.- 18,32 Spirittina ------18,31 folium..- 14^31 triangularis angulata, Gaudryina-. ____-___ 14,27 vortex, Robulus ------16,30 foveolata.---- ______14 31 tricamerata, Cassidulina.. ______7,25; pi. 7 Vulvulina nicobarensis--- _ _-_ _ 10 hadai.. ______14,31 iricarinata, TrUoculina_-_..______...... 16,32 spinosa...------6,10,11,33 14 31 tricosta, Bolivina._...______5,6,25; pi. 5 W rugosa...... __..______14.31 Trifarina bradyi. ______12,18,32 Spiroplectoides cubensis ______25 trigonula, TrUoculina.-... ______- 16,32 u-ilcoxensis, Globorotalia_____-__ 2, 3,34; pi. 3 squammosa, Cymbaloporetta _ _ _ 18,26 trUobus, Globigerinoides...---- ______. 7,12,33; pi. 11 wttliamsoniana, Bulimina------25 squamosa catenulata, E-ntosolenia _ _ 29 Triloculina bassensis.------14,32 Buliminoides------16,25 catenulata, Oolina ... ______6,29 bicarinata______14,32 Wrightii, Discorbina--.------31 stewarti, Ellipsopleurostomella .... _ 27 earlandi- ______14,32 wrightii, Rosalina------6,31 StUostomella adelinensis. ______g, 31 incisura. .______.___--_ 14,32 wuellerstorfl, Anomalina. ______29 ; pi. 4 involuta,-- _.--.______14,32 Planulina------______7,12,29 2,6,31 irregularis----- ______--.______14,32 recta- ______5, 6) 31; pi. 4 kerimbatica. _.--______-______14,32 yeguaensis, Globigerina ------2, 3,4,7,33; pis. 2, 8 subspinosa,- ... ______2,5,6,31 marshattana- ______14,32 oblonga.. ______14,32 Z verneuUi--__---- ____ 2, 6, 11, 12, 31; pis. 4, 12 oceanica-.------. ------28 Stomatorbinaconcentrica-...-- ______18, 31; pi. 19 flintiana______28 zanzibarica, Bolivina-.--- ___- ______16,25 torrei... ______2, 5, 6, 31; pi. 1 spinata.-.-.___.______.-. 14,32 zetina, Virgulina___ 5, 6,32; pi. 5 U.S GOVERNMENT PRINTING OFFICE : 1966 O 797-972 PLATES 1-19 PLATE 1 FIGUEE 1. Bulimina semicostata Nuttall (p. I 25). USNM 642166, X 66; USGS £25817 (Ei 4-1). 2. Hantkenina inflata Howe (p. I 34). USNM 642176, X 88; USGS f25818 (Jl 2-1); a, side view; b, edge view. 3. Stomdtorbina torrei (Cushman and Bermudez) (p. I 31). USNM 642175, X 56; USGS f25818 (Jl 2-1); a, dorsal view; b, ventral view; c, edge view. 4. Nuttallides trumpyi (Nuttall) (p. I 29). USNM 642174, X 112; USGS £25818 (Jl 2-1); a, dorsal view; b, ventral view; c, edge view. GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 1 FORAMINIFERA FROM THE EOCENE OF GUAM PLATE 2 FIGURES 1, 2. Globigerapsis index (Finlay) (p. I 33). 1. USNM 642170, X 70; USGS £25817 (Ei 4-1); a, dorsal view; b, ventral view; c, edge view. 2. USNM 642169, X 56; USGS £25817 (Ei 4-1). 3. Globigerina gortanii (Borsetti) (p. I 33). USNM 642168, X 70; USGS £25817 (Ei 4-1); a, dorsal view; b, side view. 4. Globigerina pera Todd (p. I 33). USNM 642167, X 88; USGS £25817 (Ei 4-1). 5. Globigerina conglomerata Schwager (p. I 33). USNM 642177, X 88; USGS f25818 (Jl 2-1); a, dorsal view; b, ventral view; c, edge view. 6. Globigerina yeguaensis Weinzierl and Applin (p. I 33). USNM 642178, X 88; USGS £25818 (Jl 2-1); a, dorsal view; b, ventral view; c, edge view. GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 2 PLANKTONIC FORAMINIFERA FROM THE EOCENE OF GUAM PLATE 3 [a, Dorsal view; b, ventral view; c, edge view] FIGURE 1. Globorotalia centralis Cushman and Bermudez (p. I 33). USNM 642171, X 70; USGS f25817 (Ei 4-1). 2. Globorotalia spinuloinflata (Bandy) (p. I 33). USNM 642172, X 148; USGS £25817 (Ei 4-1). 3. Globorotalia wilcoxensis Cushman and Ponton (p. I 34). USNM 642173, X 93; USGS f258 17 (Ei 4-1). 4. Globorotalia spinulosa Cushman (p. I 33). USNM 642179, X 112; USGS f25818 (Jl 2-1). GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 3 SPECIES OF GLOBOROTALIA FROM THE EOCENE OF GUAM PLATE 4 FIGURE 1. Bolivinopsis cubensis (Cushman and Bermudez) (p. I 25). USNM 642180, X 112; USGS f25813 (Hi 6-1). 2. Saracenaria sp. (p. I 31). USNM 642231, X 44; USGS f25814 (Gj 11-1); a, side view; b, edge view. 3. Vaginulinopsis sublituus multicamerata (Cushman and Stainforth) (p. I 32). USNM 642237, X 27; USGS f25815 (Gj 13-1). 4. Stilostomdla verneuili (d'Orbigny) (p. I 31). USNM 642204, X 44; USGS f25813 (Hi 6-1). 5, 6. Stilostomella curvatura (Cushman) (p. I 31). 5. USNM 642201, X 88; USGS f25813 (Hi 6-1). 6. USNM 642202, X 88; USGS f25813 (Hi 6-1). 7. Chrysalogonium lanceolum Cushman and Jarvis (p. I 26). USNM 642181, X 44; USGS f25813 (Hi 6-1). 8. Fissurina fimbriata (Brady) (p. I 27) . USNM 642240, X 66; USGS f25815 (Gj 13-1); a, front view; b, edge view. 9. Caucasina grata (Parker and Bermudez) (p. I 26). USNM 642238, X 148; USGS f258l5 (Gj 13-1); a, dorsal view; b, ventral view. 10. Pleurostomella sp. (p. I 30). USNM 642206, X 88; USGS f25813 (Hi 6-1); a, front view; b, side view. 11. Pleurostomella cubensis Cushman and Bermudez (p. I 30). USNM 642205, X 56; USGS f25813 (Hi 6-1); a, front view; b, side view. 12. Oolina n. sp. aff. 0. gibbera (Buchner) (p. I 29). USNM 642239, X 88; USGS f25815 (Gj 13-1); a, side view; b, top view. 13. Stilostomella recta (Palmer and Bermudez) (p. I 31). USNM 642203, X 112; USGS f25813 (Hi 6-1). GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 4 BENTHONIC FORAMINIFERA FROM THE OLIGOCENE OF GUAM PLATE 5 [All specimens from USOS f25813 (HI 6-1); a, front view; b, top view] FIGURES 1, 2. Bulimina bleeckeri Hedberg (p. I 25). 1. USNM 642183, X 112. 2. USNM 642184, X 112. 3. Bulimina alazanensis Cushman (p. 1 25). USNM 642182, X 112. 4. Bulimina semicostata Nuttall (p. I 25). USNM 642185, X 112. 5. Virqulina zetina Cole (p. I 32). USNM 642186, X 148. 6. Bolivina beyrichi Reuss (p. I 24). USNM 642187, X 88. 7. Bolivina oligocaenica Spandel (p. I 24). USNM 642190, X 148. 8. Bolivina plicatetta mera Cushman and Ponton (p. I 24). USNM 642191, X 148. 9. Bolivina cf. B. minutissima Spandel (p. I 24). USNM 642189, X 148. 10. Bolivina rhomboidalis (Millett) (p. I 24). USMN 642192, X 88. 11. Bolivina (Loxostomum) rostra (Cushman) (p. I 25). USNM 642196, X 148. 12. Bolivina aff. B. tricosta Cushman and Bermudez (p. I 25). USNM 642193, X 194. 13. Bolivina fastigia Cushman (p. J 24). USNM 642188, X 88. 14. Bolivina vicksburgensis (Howe) (p. I 25). USNM 642194, X 194. 15. Angulogerina byramensis (Cushman) (p. I 24). USNM 642197, X 112. 16. Angulogerina cooperensis Cushman (p. I 24). USNM 642198, X 112. 17. Angulogerina vicksburgensis Cushman (p. I 24). USNM 642199, X 88. 18. Siphogenerina striata (Schwager) (p. I 31). USNM 642200, X 88. 19. Bolivina sp. B (p. I 25). USNM 642195, X 112. GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 5 BULIMINIDAE FROM THE OLIGOCENE OF GUAM PLATE 6 FIGURE 1. Eponides sp. (p. I 27). USNM 642207, X 88; TJSGS f25813 (Hi 6-1); a, dorsal view; b, ventral view: c, edge view. 2. Astrononion cf. A. pusillum Hornibrook (p. I 24). USNM 642249, X 148; TJSGS f25816 (Gj 14-1); a, side view; b, edge view. 3. Alabamina cornea Todd (p. I 23). USNM 642209, X 88; USGS f25813 (Hi 6-1); a, dorsal view; b, ventral view; c, edge view. 4. Astrononion cf. A. australe Cushman and Edwards (p. I 24). USNM 642210, X 112; USGS f25813 (Hi 6-1); a, side view; b, edge view. 5 Oridorsalis umbonatus (Reuss) (p. I 29). USNM 642242, X 88; USGS f25815 (Gj 13-1); a, side view; b, ventral view; c, edge view. 6. Anomalina granosa (Hantken) (p. I 24). Immature individual, USNM 642250, X 56; USGS f25816 (Gj 14-1); a, side view; b, edge view. 7. Eponides duprei ciervoensis Cushman and Simonson (p. I 27). USNM 642241, X 88; USGS f25815 (Gj 13-1); a, dorsal view; b, ventral view; c, edge view. 8. Nonion maoricum (Stache) (p. I 29). USNM 642233, X 44; USGS f25814 (Gj 11-1); a, side view; b, edge view. 9. Gyroidina girardana (Reuss) (p. I 28). USNM 642232, X 44; USGS f25814 (Gj 11-1); a, dorsal view; b, ventral view; c, edge view. 10. Chilostomella cyclostoma Rzehak (p. I 26). USNM 642212, X 27; USGS f 25813 (Hi 6-1). PROFESSIONAL PAPER 403-1 PLATE 6 GEOLOGICAL SURVEY BENTHONIC FORAMINIFERA FROM THE OLIGOCENE OF GUAM PLATE 7 FIGURE 1. Cassidulina tricamerata Galloway and Heminway (p. I 25). USNM 642211, X 88; USGS f25813 (Hi 6-1); a, front view; b, edge view. 2. Pararotalia byramensis (Cushman) (p. I 29). USNM 642208, X 56; USGS f25813 (Hi 6-1); a, dorsal view; b, ventral view. 3. Anomalina granosa (Hantken) (p. I 24). USNM 642234, X 44; USGS f25814 (Gj 11-1); a, dorsal view; b, ventral view; c, edge view. 4. Cibicides carinatus (Terquem) (p. I 26). USNM 642214, X 56; USGS f25813 (Hi 6-1); ventral (convex) side. 5. Cibicides havanensis Cushman and Bermudez (p. I 26). USNM 642243, X 56; USGS f25815 (Gj 13-1) ; a, dorsal view; b, ventral view; c, edge view. 6. Cycloloculina cubensis Cushman and Bermudez (p. I 26). USNM 642213, X 56; USGS f25813 (Hi 6-1). 7. Cibicides praecursorius (Schwager) (p. I 26). USNM 642215, X 56; USGS f25813 (Hi 6-1); a, dorsal view; b, ventral view; c, edge view. GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 7 BENTHONIC FORAMINIFERA FROM THE OLIGOCENE OF GUAM PLATE 8 FIGURES 1, 4. Chiloguembelina cubensis (Palmer) (p. I 33). 1. USNM 642217, X 194; USGS 125813 (Hi 6-1); a, side view; b, top view. 4. USNM 642216, X 180; USGS f25813 (Hi 6-1). 2. Globigerinella danvillensis (Howe and Wallace) (p. I 33). USNM 642219, X 194; USGS £25813 (Hi 6-1); a, side view; b, edge view. 3. Cassigerinella chipolensis (Cushman and Ponton) (p. I 33). USNM 642218, X 180; USGS £25813 (Hi 6-1); a, front view; b, edge view. 5. Globigerina conglomerate, Schwager (p. I 33). USNM 642228, X 56; USGS £25813 (Hi 6-1); a, dorsal view; b, ventral view; c, edge view. 6. Globigerina dissimilis Cushman and Bermudez (p. I 33). USNM 642244, X 93; USGS £25815 (Gj 13-1); a, dorsal view; b, ventral view; c, edge view. 7. Globigerina amphapertura Belli (p. I 33). USNM 642221, X 88; USGS £25813 (Hi 6-1), a, dorsal view; b, ventral view; c, edge view. 8. Hanikenina t«/Zato,Howe (p. I 34). USNM 642220, X 88; USGS £25813 (Hi 6-1); a, side view; fc, edge view. 9. Globigerina yeguaensis Weinzierl and Applin (p. I 33). USNM 642229, X 88; USGS £25813 (Hi 6-1); a, dorsal view; b, ventral view; c, edge view. GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE PLANKTONIC FORAMINIFERA FROM THE OLIGOCENE OF GUAM PLATE 9 [a, Dorsal view; 6, ventral view; c, edge view] FIGURE 1. Globigerina danvillensis Howe and Wallace (p. I 33). USNM 642222, X 194; USGS f25813 (Hi 6-1). 2. GloUgerina suieri (Bolli) (p. I 33). USNM 642227, X 148; USGS f25813 (Hi 6-1). 3, 4. Globigerina opima nana (Bolli) (p. I 33). 3. USNM 642245, X 112; USGS f25815 (Gj 13-1). 4. USNM 642226, X 112; USGS f25813 (Hi 6-1). GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 9 SPECIES OF GLOBIGERINA FROM THE OLIGOCENE OF GUAM PLATE 10 FIGURES 1-5. Globigerina sellii (Borsetti) (p. 1 33). 1. USNM 642236, X 56; USGS f25814 (Gj 11-1); a, dorsal view; b, ventral view; c, edge view. 2. USNM 642251, X 56; f25816 (Gj 14-1); dorsal view. 3. USNM 642246, X 56; USGS f25815 (Gj 13-1); a, dorsal view; b, ventral view: e, edge view. 4. USNM 642252, X 56; USGS f25816 (Gj 14-1); ventral view. 5. USNM 642253, X 56; USGS f25816 (Gj 14-1); edge view. 6-8. Globigerina gortanii (Borsetti) (p. I 33). 6. USNM 642235, X 66; USGS f25814 (Gj 11-1); a, dorsal view; b, edge view. 7. USNM 642223, X 112; USGS f25813 (Hi 6-1); a, dorsal view; b, ventral view; c, edge view. 8. USNM 642224, X 88; USGS f25813 (Hi 6-1); a, dorsal view; b, ventral view; c, edge view. GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 10 SPECIES OF GLOBIGERINA FROM THE OLIGOCENE OF GUAM PLATE 11 [o, Dorsal view; 6, ventral view; c, edge view] FIGURE 1. Globigerina increbescens Bandy (p. I 33j. USNM 642225, X 88; USGS f25813 (Hi 6-1). 2. Globigerina senilis Bandy (p. I 33). USNM 642247, X 88"; USGS £25815 (Gj 13-1). 3. Globigerina tripartita tapuriensis Blow and Banner (p. I 33). USNM 642248, X 56; USGS £25815 (Gj 13-1). 4. Globigerinoides trilobus (Reuss)? (p. I 33). USNM 642230, X 93; USGS £25813 (Hi 6-1). GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 11 PLANKTONIC FORAMINIFERA FROM THE OLIGOCENE OF GUAM PLATE 12 FIGURE 1. Dentalina communis d'Orbigny (p. I 26). USNM 642254, X 44; USGS f25805 (Rr 15-1). 2. Orthomorphina fijiensis (Cushman) (p. I 29). USNM 642255, X 88; USGS f25805 (Rr 15-1). 3. Stilostomella verneuili (d'Orbigny) (p. I 31). USNM 642258, X 88; USGS f25805 (Rr 15-1). 4. Orthomorphina parvula Todd, n. sp. (p. I 29). Holotype, USNM 642256, X 148; USGS f25805 (Rr 15-1). 5. Orthomorphina perversa (Schwager) (p. I 29). USNM 642257, X 56; USGS f25805 (Rr 15-1). 6. Nodosaria equisetiformis Schwager (p. I 29). USNM 642296, X 56; USGS f25809 (Ts 5-6). 7. Dentalina sp. A (p. I 26). USNM 642298, X 44; USGS f25808 (Ts 5-7). 8. Karreriella bradyi (Cushman) (p. I 28). USNM 642259, X 44; USGS f25805 (Rr 15-1). 9. Fissurina circulum Seguenza (p. I 27). USNM 642260, X 88; USGS f25805 (Rr 15-1); a, front view; b, top view. 10. Fissurina formosa (Schwager) (p. I 27). USNM 642261, X 88; USGS f25805 (Rr 15-1). 11. Bolivina silvestrina Cushman (p. I 24). USNM 642262, X 88; USGS f25805 (Rr 15-1); a, front view; 6, top view. 12. Bolivina aff. B. sinuata Galloway and Wissler (p. I 24). USNM 642263, X 88; USGS f25805 (Rr 15-1). 13. Astrononion novozealandicum Cushman and Edwards (p. I 24). USNM 642268, X 112; USGS f25805 (Rr 15-1). 14, 15. Pleurostomella alternans Schwager (p. I 29). 14. USNM 642264, X 88; USGS f25805 (Rr 15-1); a, front view; b, side view. 15. USNM 642265, X 88; USGS f25805 (Rr 15-1); a, front view; b, side view. 16. Ellipsopleurostomella sp. (p. I 27). USNM 642266, X 88; USGS f25805 (Rr 15-1); a, side view; 6, top view. GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 12 BENTHONIC FORAMINIFERA FROM THE MIOCENE OF GUAM PLATE 13 FIGURE 1. Cassidulina sagamiensis Asano and Nakamura (p. I 25). USNM 642300, X 112; USGS f25807 (Ts 5-10); a, front view; b, edge view. 2. Cassidulina aft. C. angulosa Cushman (p. I 25). USNM 642271, X 140; USGS f25805 (Rr 15-1); a, front view; b, edge view. 3. Cassidulina subglobosa Brady (p. I 25). USNM 642273, X 66; USGS f25805 (Rr 15-1); a, front view; 6, rear view; c, edge view. 4. Cassidulina carandelli Colom (p. I 25). USNM 642299, X 112; USGS f25807 (Ts 5-10); a, front view; 6, rear view; c, end view. 5. Oridorsalis umbonatus (Reuss) (p. I 29). USNM 642270, X 88; USGS f25805 (Rr 15-1); a, dorsal view; 6, ventral view; c, edge view. 6. Cassidulina pacifica Cushman (p. I 25). USNM 642272, X 88; USGS f25805 (Rr 15-1); a, front view; 6, rear view. 7. Osangularia culler (Parker and Jones) (p. I 29). USNM 642269, X 44; USGS f25805 (Rr 15-1); a, dorsal view; 6, ventral view; c, edge view. GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 13 CASSIDULINIDAE AND ROTALIIDAE FROM THE MIOCENE OF GUAM '"" ' PLATE 14 t N s * [AlUspecimens from USGS f26805 (Rr 15-1)] 1. Globigerina conglomerates Schwager (p. I 33). - \ USNM 642278, X 56; a, dorsal view; 6, ventral view; c, edge view. 2. Globoquadrina altispira (Cushman and Jarvis) (p. I 33). USNM 642:281, X 56; u, dorsal view; 6, side view. 3. Globigerinoides sacculifer (Brady) (p. I 33). USNM 642280, X 44; a, dorsal view; b, ventral view; c, edge view. 4. Globigerinoides canglobatus (Brady) (p. I 33). USNM 64227^, ,,X 44; " . . . ' 5. Globigerind^&G,.G. tipertura Gushman (p. I 33). - - ; " ' USNM,642274, X 148; a, dorsal view; b, ventral view; c, edge view. 6,- 7. 'Globigerina^nepenthes Todd (p. I 33). , "" ' '6. Tmmature individual, USNM 642277, X 88. 7. Adult, USNiVl''642276, X 88. 8. Globigerirta hexagoria. Natland (p. I 33). USNM 642275, X 148; «, dorsal view; 6, ventral view; c, edge view. 9. Pulleniatina obliquiloculata (Parker and Jones),(p. I 34). USNM 642285, X 56; a, dorsal view; 6, ventral view: c, edge view. 10. Candeina nitida d'Orbigny (p. I 33). USNM 642286, X 148" 4 ' GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 1 4 PLANKTONIC FORAMINIFERA FROM THE MIOCENE OF GUAM PLATE 15 [All specimens from USGS f25805 (Er 15-1); a, dorsal view; b, ventral view; c, edge view] FIGURES 1, 4. Orbulina suturalis Bronnimann (p. I 34). 1. USNM 642283, X 88. 4. USNM 642282, X 56. 2. Ehrenbergina albatrossi Cushman (p. I 27). USNM 642267, X 56. 3. Sphaeroidinella kochi (Caudri) (p. I 34). USNM 642288, X 27. 5. SphaeroidineUa seminuHna (Schwager) (p. I 34). USNM 642289. X 56. 6. Sphaeroidinella disjunclu Finlay (p. I 34). USNM 642287, X 88. 7. Hastigerina pelagica (d'Orbigny) (p. I 34). USNM 642284, X 88. 8. Globorotalia menardii fijiensis Cushman (p. I 33). USNM 642290, X 56. GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 1 5 CASSIDULINIDAE, GLOBIGERINIDAE, AND GLOBOROTALIIDAE FROM THE MIOCENE OF GUAM PLATE 16 [a, Dorsal view; b, ventral view; c, edge view] FIGURE 1. Globorotalia menardii-tumida transition form (p. I 33). U8NM 642292, X 44; USGS f25805 (Rr 15-1). 2. Globorotalia hirsuta (d'Orbigny) (p. I 33). USNM 642295, X 56; USGS £25805 (Rr 15-1). 3. Globorotalia menardii ungulata Bermudez (p. I 33). USNM 642291, X 180; USGS £25805 (Rr 15-1). 4. Globorotalia tumida (Brady) (p. I 33). USNM 642297, X 56; USGS £25809 (Ts 5-6). 5. Globorotalia fohsi robusta Bolli (p. I 33). USNM 642294, X 88; USGS £25805 (Rr 15-lj. 6. Globorotalia tumida flexuosa (Koch) (p. I 33). USNM 642293, X 44; USGS £25805 (Rr 15-1). GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 16 SPECIES OF GLOBOROTALIA FROM THE MIOCENE OF GUAM PLATE 17 [a, Side view; 6, apertural view] FIGURE 1. Saqenina frondescens (Brady) (slender threads) and Placopsilinal sp. (arenaceous tubes) attached to a fragmentary specimen of Cycloclypeus carpenteri Brady (p. I 26, I 29, and I 31). USNM 642328, X 10; USGS f25791 (Guam 664). 2. Nubeculina divaricata advena Cushman (p. I 29). USNM 642303, X 27; USGS f25748 (Guam 468). 3. Clavulina difformis Brady (p. I 26). USNM 642302, X 27; USGS f25744 (Guam 450). 4. Quinqueloculina poeyana d'Orbigny (p. 1 30). USNM 642307, X 112; USGS f25754 (Guam 524). 5. Flintina bradyana Cushman (p. I 27). USNM 642308, X 44; USGS f25754 (Guam 524). 6. Quinqueloculina subcuneata Cushman (p. I 30). USNM 642301, X 66; USGS f25740 (Guam 348). 7. Triloculina subgranulata Cushman (p. I 32). USNM 642304, X 56; USGS f25749 (Guam 470). 8. Quinqueloculina agglutinans d'Orbigny (p. I 30). USNM 642310, X 56; USGS f25765 (Guam 551). 9. Quinqueloculina bosciana d'Orbigny (p. I 30). USNM 642311, X 112; USGS f25768 (Guam 556). 10. Articulina sp. (p. I 24). USNM 642321, X 88; USGS f25790 (Guam 663). 11. Biloculinetta globula (Bornemann) (p. I 24), USNM 642315, X 56; USGS f25789 (Guam 662). GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 17 HYPERAMMINIDAE, PLACOPSILINIDAE, VALVULINIDAE, AND MILIOLIDAE FROM RECENT SEDIMENTS AROUND GUAM PLATE 18 FIGURE 1. Robulus orbicularis (d'Orbigny) (p. I 30). USNM 642316, X 56; USGS f25789 (Guam 662) ; a, side view; b, edge view. 2. Frondicularia robusta Brady var. repanda Cushman (p. I 27). USNM 642329, X 27; USGS f25791 (Guam 664). 3. Darbyella sp. (p. I 26). USNM 642322, X 34; USGS f25790 (Guam 663) ; a, side view; b, edge view showing slit aperture. 4. Nodosaria calomorpha Reuss (p. I 28). USNM 642323, X 66; USGS f25790 (Guam 663). 5. Astacolus planulatus Galloway and Wissler (p. I 24). USNM 642317, X 27; USGS f25789 (Guam 662); a, side view; b, edge view. 6. Reussella pulchra Cushman (p. I 30). USNM 642331, X 88; USGS f25791 (Guam 664). 7. Astacolus bradyi (Cushman) (p. I 24). USNM 642320, X 44; USGS f25789 (Guam 662); a, side view; b, ed^e view. 8. Bolivina hantkeniana Brady (p. I 24). USNM 642330, X 56; USGS £25791 (Guam 664); a, side view; b, edge view. 9. Cassidulina minuta Cushman (p. I 25). USNM 642327, X 112; USGS f25790 (Guam 663); a, apertural view; b, edge view. 10. Cassidulina delicata Cushman (p. I 25). USNM 642326, X 148; USGS f25790 (Guam 663); a, apertural view; b, edge view. 11. Elphidium hyalocostatum Todd (p. I 27). USNM 642305, X 88; USGS f25750 (Guam 472); o, side view; 6, edge view. 12. Neoconorbina crustata (Cushman) (p. I 28). USNM 642324, X 66; USGS £25790 (Guam 663); o, dorsal view; b, ventral view; c, edge view. 13. Rotorbindla mira (Cushman) (p. I 31). USNM 642313, X 44; USGS £25781 (Guam 615), a, dorsal view; b, ventral view; c, edge view. GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 18 LAGENIDAE, BULIMINIDAE, ELPHIDIIDAE, DISCORBIDAE, AND CASSIDULINIDAE FROM RECENT SEDIMENTS AROUND GUAM PLATE 19 [a, Dorsal view; b, ventral view; c, edge view] FIGURE 1. Pegidia dubia (d'Orbigny) (p. I 29). USNM 642319, X 32; USGS f25789 (Guam 662). 2. Cancris sagra (d'Orbigny) (p. I 25). USNM 642309, X 88; USGS f25757 (Guam 537). 3. Bronnimannia haliotis (Heron-Alien and Earland) (p. I 25). USNM 642314, X 88; USGS f25788 (Guam 661). 4. Baggina totomiensis Makiyama (p. I 24). USNM 642332, X 44; USGS f25791 (Guam 664). 5. Eponides repandus (Fichtel and Moll) (p. I 27). USNM 642312, X 27; USGS f25779 (Guam 610A). 6. Streblus beccarii var. of Todd 1957 (p.-I 32). USNM 642306, X 88; USGS f25752 (Guam 510). 7. Stomatorbina concentrica (Parker and Jones) (p. I 31). USNM 642325, X 56; USGS f25790 (Guam 663). 8. Anomalina coronata Parker and Jones (p. I 24). USNM 642318, X 44; USGS £25789 (Guam 662). GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 19 PEGIDIIDAE, ROTALIIDAE, AND ANOMALINIDAE FROM RECENT SEDIMENTS AROUND GUAM Geology and Hydrology of Guam, Mariana Islands GEOLOGICAL SURVEY PROFESSIONAL PAPER 403 This volume was published as separate chapters A I UNITED STATES DEPARTMENT OF THE INTERIOR STEW ART L. UDALL, Secretary GEOLOGICAL SURVEY William T. Pecora, Director CONTENTS [Letters designate the separately published chapters] (A) General geology of Guam, by Joshua I. Tracey, Jr., Seymour O. Schlanger, John T. Stark, David B. Doan, and Harold G. May. (B) Marine geology of Guam, by K. O. Emery. (C) Petrology of the volcanic rocks of Guam, by John T. Stark, with a section on Trace elements in the volcanic rocks of Guam, by Joshua I. Tracey, Jr., and John T. Stark. (D) Petrology of the limestones of Guam, by Seymour O. Schlanger, with a section on Petrography of the insoluble residues, by J. S, Hathaway and Dorothy Garroll. (E) Tertiary larger Foraminifera from Guam, by W. Storrs Cole. (F) Mineralogy of selected soils from Guam, by Dorothy Carroll and John C. Hathaway, with a section on Description of soil profiles, by Oarl H. Stensland. (G) Fossil and recent calcareous algae from Guam, by J. Harlan Johnson, (H) Hydrology of Guam, by Porter E. Ward, Stuart H. Hoffard, and Dan A. Davis. (I) Smaller Foraminifera from Guam, by Ruth Todd.