DOCSLIB.ORG

Taxonomy and Biostratigraphy of the Early Tertiary Taeniodonta (Mammalia: Eutheria): Summary

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Taxonomy and Biostratigraphy of the Early Tertiary Taeniodonta (Mammalia: Eutheria): Summary Taxonomy and biostratigraphy of the early Tertiary Taeniodonta (Mammalia: Eutheria): Summary ROBERT M. SCHOCH Department of Geology and Geophysics and Peabody Museum of Natural History, Yale University, New Haven, Connecticut 06511 INTRODUCTION (northeastern Utah), Huerfano basin (south-central Colorado), San Juan basin (northwestern New Mexico and southwestern Colo- The Taeniodonta is an order of archaic mammals known rado), and Tornillo Flat area (western Texas). Here, I place special exclusively from the early Tertiary of western North America emphasis on the San Juan basin (Fig. 3), from which the early (Schoch and Lucas, 1981a). Their remains are found in Puercan Puercan to Wasatchian taeniodonts are best known. The history of (lower Paleocene) to Uintan (upper Eocene) strata of the Rocky study and nomenclature of the Tertiary strata of the San Juan basin Mountain intermontane sedimentary basins (Figs. 1, 2; Table 1). In (Fig. 4) has been discussed and reviewed in numerous papers, the San Juan basin of New Mexico and Colorado, the Puercan to Wasatchian (lower Eocene) sedimentary sequence includes the type localities for the Puercan, Torrejonian (middle Paleocene), and Tif- Figure 1. Localities at fanian (late Paleocene) land mammal "ages" (Wood and others, which taeniodonts have been 1941), as well as a classic Wasatchian fauna (Lucas and others, found. Numbers correspond 1981). Thus, the San Juan basin mammalian faunas provide a to localities listed in Table sequence of faunas which can provide the basis for interbasinal 1. For localities'in the San correlation. The Taeniodonta are an important element of these Juan basin (SJB), see Fig- faunas; many of the type specimens and important referred speci- ure 3. mens of these animals come from the San Juan basin. However, except for Patterson's (1949) brief review, a comprehensive study of this order has not been published for more than 80 yr (Wortman, 1897). Before a group of animals can be used for biostratigraphic correlation, its species- and genus-level taxonomy and its known stratigraphic occurrences must be well established. In Part //of this paper, I revise the species-level taxonomy of the Taeniodonta and document their geographic and temporal (stratigraphic) distribu- tion. Here, I discuss their usefulness and implications for biostrati- graphic correlation in western North America. THE GEOGRAPHIC AND BIOSTRATIGRAPHIC DISTRIBUTION OF THE TAENIODONTA Introduction All unequivocally known taeniodonts come from the Rocky Mountain early Tertiary intermontane sedimentary basins of west- ern North America (Figs. 1, 2; Table 1), which were formed or rejuvenated during the Laramide orogeny. The major areas where taeniodonts occur are, from north to south: the Crazy Mountain Field (south-central Montana), Bighorn basin (north-central Wyoming), Togwotee Pass area (northwestern Wyoming), Wind River basin (central Wyoming), Green River-Bridger basin (southwestern Wyoming), Washakie basin (south-central Wyoming), Uinta basin The complete article, of which this is a summary, appears in Part II of the Bulletin, v. 92, p. 1982-2267. Geological Society of America Bulletin, Part I, v. 92, p. 933-941, 5 figs, 1 table, December 1981. 933 Downloaded from http://pubs.geoscienceworld.org/gsa/gsabulletin/article-pdf/92/12/933/3429992/i0016-7606-92-12-933.pdf by guest on 23 September 2021 934 R. M. SCHOCH including Baltz and others (1966), Gardner (1910), Granger (1914), "zones." These "/.ones" have been considered to represent super- Kues and others (1977), Lucas (1981), Matthew (1937), Reeside posed biostratigraphic units well separated temporally. Alterna- (1924), Simpson (1948, 1959, 1981), Sinclair and Granger (1914), tively, they have been thought to represent different facies or to Tsentas (1981), and Wood and others (1941). reflect collecting biases (Matthew, 1937). Previously, Onychodectes tisonensis has been thought to occur throughout the Puercan in both Puercan-Torrejonian "zones," whereas O. "rarus" and Wortmania otariidens were re- stricted to the Taeniolabis "zone" (Russell, 1967). Here, O. "rarus" Taeniodonts of Puercan and Torrejonian age occur in the is considered a junior subjective synonym of O. tisonensis at the Paleocene Nacimiento Formation at several localities in the specific level and W. otariidens is now known from the Ectoconus southwestern and south-central San Juan basin (Fig. 3; Table 1). "zone" in Betonnie Tsosie and Kimbeto washes. However, as far as The Nacimiento Formation is composed of red and green, buff and is known, O. t. tisonensis does occur in both zones, whereas O. t. gray clay shales and siltstones, black clay shales, and lenticular rarus is known only from the Taeniolabis "zone." Thus, better arkosic and quartzose sandstones (Baltz and others, 1966; Tsentas knowledge of the Puercan taeniodonts reduces the distinctiveness of and Lucas, 1980, Tsentas and others, 1981). In the upper part of the these "zones" and does not strongly support the idea that they are Nacimiento Formation, a northern facies of relatively high-energy separated by a significant span of time. fluvial deposits (with a greater over-all percentage of sandstone) Both O. tisonensis and W. otariidens are restricted to the and a southern facies of lower-energy fluvial and swamp deposits Puercan. The occurrence of O. tisonensis in the Wagonroad local are recognizable (Tsentas and others, 1981). This distribution of fauna of the upper part of the North Horn Formation of east- facies suggests a northern source area for much of the upper part of central Utah supports the correlation of this locality with the the Nacimiento Formation (Baltz, 1967; Tsentas and others, 1981). Puercan-aged strata of the Nacimiento Formation (Robison and The Puercan strata of the Nacimiento Formation have been Lucas, 1980). subdivided into two "zones," a lower Ectoconus "zone" (also known The Torrejonian strata of the Nacimiento Formation also have as the Hemithlaeus "zone"; Van Valen, 1978) and an overlying been divided into two "zones" on the basis of mammalian faunas Taeniolabis "zone" (formerly known as the "Polymastodon," (Lindsay and others, 1978; Matthew, 1937; Osborn, 1929). The pre- (-Taeniolabis) zone; Lindsay and others, 1978; Matthew, 1937; sumably lower Deltatherium "zone" occurs in Kutz Canyon, Tor- Osborn, 1929; Sinclair and Granger, 1914). Localities in Betonnie reon wash, and Kimbeto wash, whereas the overlying Pantolambda Tsosie wash and Kimbeto wash are in the Ectoconus "zone," where- "zone" is well known from Torreon wash and University of Kansas as localities in De-na-zin wash and Alamo wash include both New Mexico locality 15, as well as the areas south-east of Kimbeto £ £k . UINTAN "5> <n t E I? HI a> O 1 T3 z n <D UJ o a o O) o 3 u 5 o BRIDGERIAN C « UJ ra a 0) o> o a o o o 3 C 3 10 WASATCHIAN C O) (0 10 o O) OI o *o* c o o o o UJ UJ •o UJ • o o •o o a> t • CLARKFORKIAN c V) o HI a Z o a. I UJ 1/1 < 9 O O c c o> o 9) I ' O TIFFANIAN eo T> I UJ T3 O tfí c C a. 0) o T' 2 2 o c O o ® 0) o c: 3 •o T3 O X o O 5! o a> 'TORREJONIAN o O i: 0 O PUERCAN 1 Figure 2. Biostratigraphic distribution of the Taeniodonta. Downloaded from http://pubs.geoscienceworld.org/gsa/gsabulletin/article-pdf/92/12/933/3429992/i0016-7606-92-12-933.pdf by guest on 23 September 2021 EARLY TERTIARY TAENIODONTA: SUMMARY 935 and just south of Cedar Hill (Tsentas, 1981; Wilson, 1956). These 1937; Tsentas, 1981; Wilson, 1956). Recently, a specimen of Panto- "zones" also have been thought to represent superposed biostrati- lambda was found in a Deltatherium "zone" horizon in Kutz graphic units separated by a significant length of time (Lindsay and Canyon, supporting the idea of collecting biases (Lucas and O'Neill, others, 1978; Taylor and Butler, 1980). Alternatively, it has been 1981). Conoryctes comma is known with certainty only from the suggested that the differences betweeen the faunas of the two Pantolambda "zone." The specimens reported by Taylor (1981) as "zones" reflect facies differences and/or collecting biases (Matthew, Conoryctes comma from a Deltatherium "zone" horizon in Kutz TABLE 1. SUMMARY OF THE STRATIGRAPHIC AND GEOGRAPHIC DISTRIBUTION OF THE TAENIODONTA» Locality Formation Age Taxa Reference 1. Betonnie Tsosie wash Nacimiento Puercan Onychodectes tisonensis tisonensis Simpson, 1959; Sinclair and Granger Wortmania otariidens 1914 2. Kimbeto wash Nacimiento Puercan O. t. tisonensis Simpson, 1959; Sinclair and Granger, W. otariidens 1914 3. De-na-zin wash Nacimiento Puercan O. t. tisonensis Sinclair and Granger, 1914 O. t. rarus W. otariidens 4. Alamo wash Nacimiento Puercan O. l. tisonensis Sinclair and Granger, 1914 O. 1. rarus W. otariidens 5. Wagonroad Ridge North Horn Puercan O. l. tisonensis Robison and Lucas, 1980 stylinodontine indet. 6. Dragon Canyon North Horn Torrejonian Conoryctella dragonensis Gazin, 1941; Schoch and Lucas, 1981c Conoryctella pattersoni tPsitlacotherium sp. or ? Wortmania sp 7. Kutz Canyon Nacimiento Torrejonian C. pattersoni Granger, 1917; Schoch and Lucas, Psittacotherium multifragum 1981c; R. W. Wilson, 1956 8. Kimbeto wash Nacimiento Torrejonian Huerfanodon torrejonius Schoch and Lucas, 1981b P. multifragum 9. Torreon wash Nacimiento Torrejonian Conoryctes comma Matthew, 1897; Tsentas, 1981 P. multifragum 10. UK NM locality 15 Nacimiento Torrejonian C. comma R. W. Wilson, 1956 P. multifragum 11. Gallegos Canyon Nacimiento Torrejonian P. multifragum Sinclair and Granger, 1914 12. Escavada wash Nacimiento Torrejonian conoryctine indet. Kues and others, 1977 P. multifragum 13. Simpson's locality 226 Nacimiento Torrejonian P. multifragum Simpson, 1959 14. Gidley Quarry Lebo Torrejonian conoryctine indet. Simpson, 1937 15. Silberling Quarry Lebo Torrejonian ? Huerfanodon sp. Simpson, 1937 P. multifragum 16. Rock Bench Quarry Polecat Bench Torrejonian Huerfanodon polecatensis Gingerich and others, 1980 17. Swain Quarry Fort Union Torrejonian P. multifragum Rigby, 1980 18. Douglass Quarry Melville Tiffanian P. multifragum Douglass, 1908; Simpson, 1937 19.
Load more

Recommended publications
  • Asian Paleocene-Early Eocene Chronology and Biotic Events
    ©Geol. Bundesanstalt, Wien; download unter www.geologie.ac.at Berichte Geol. B.-A., 85 (ISSN 1017-8880) – CBEP 2011, Salzburg, June 5th – 8th Asian Paleocene-Early Eocene Chronology and biotic events Suyin Ting1, Yongsheng Tong2, William C. Clyde3, Paul L.Koch4, Jin Meng5, Yuanqing Wang2, Gabriel J. Bowen6, Qian Li2, Snell E. Kathryn4 1 LSU Museum of Natural Science, Baton Rouge, LA 70803, USA 2 Institute of Vert. Paleont. & Paleoanth., CAS., Beijing 100044, China 3 University of New Hampshire, Durham, NH 03824, USA 4 University of California Santa Cruz, Santa Cruz, CA 95064, USA 5 American Museum of Natural History, New York, NY 10024, USA 6 Purdue University, West Lafayette, IN 47907, USA Biostratigraphic, chemostratigraphic, and magnetostratigraphic studies of the Paleocene and early Eocene strata in the Nanxiong Basin of Guangdong, Chijiang Basin of Jiangxi, Qianshan Basin of Anhui, Hengyang Basin of Hunan, and Erlian Basin of Inner Mongolia, China, in last ten years provide the first well-resolved geochronological constrains on stratigraphic framework for the early Paleogene of Asia. Asian Paleocene and early Eocene strata are subdivided into four biochronological units based on the fossil mammals (Land Mammal Ages). From oldest to youngest, they are the Shanghuan, the Nongshanian, the Gashatan, and the Bumbanian Asian Land Mammal Ages (ALMA). Recent paleomagnetic data from the Nanxiong Basin indicate that the base of the Shanghuan lies about 2/3 the way up Chron C29r. Nanxiong data and recent paleomagnetic and isotopic results from the Chijiang Basin show that the Shanghuan-Nongshanian ALMA boundary lies between the upper part of Chron C27n and the lower part of Chron C26r, close to the Chron C27n-C26r reversal.
    [Show full text]
  • A/L Hcan %Mlsdum
    A/LSoxfitateshcan %Mlsdum PUBLISHED BY THE AMERICAN MUSEUM OF NATURAL HISTORY CENTRAL PARK WEST AT 79TH STREET, NEW YORK 24, N.Y. NUMBER 1957 AUGUST 5, 1959 Fossil Mammals from the Type Area of the Puerco and Nacimiento Strata, Paleocene of New Mexico BY GEORGE GAYLORD SIMPSON ANTECEDENTS The first American Paleocene mammals and the first anywhere from the early to middle Paleocene were found in the San Juan Basin of New Mexico. Somewhat more complete sequences and larger faunas are now known from elsewhere, but the San Juan Basin strata and faunas are classical and are still the standard of comparison for the most clearly established lower (Puercan), middle (Torrejonian), and upper (Tiffanian) stages and ages. The first geologist to distinguish clearly what are now known to be Paleocene beds in the San Juan Basin was Cope in 1S74. He named them "Puercan marls" (Cope, 1875) on the basis of beds along the upper Rio Puerco, and especially of a section west of the Rio Puerco southwest of the then settlement of Nacimiento and of the present town of Cuba, on the southern side of Cuba Mesa. Cope reported no fossils other than petrified wood, but in 1880 and later his collector, David Baldwin, found rather abundant mammals, described by Cope (1881 and later) in beds 50 miles and more to the west and northwest of the type locality but referred to the same formation. In the 1890's Wortman collected for the American Museum in the Puerco of Cope, and, on the basis of this work, Matthew (1897) recognized the presence of two quite distinct faunas of different ages.
    [Show full text]
  • (Mammalia) in the Early Eocene Ofeurope
    The presence of Taeniodonta (Mammalia) in the Early Eocene ofEurope Carmen ESTRAVIS* Donald E. RUSSELL** * Centro de Estratigrafia e Palcobiologia da UNL, Faculdade de Ciencias e Tecnologia, Quinta da Torre, P-2825 Monte de Caparica, Portugal. ** Institut de Paleontologic (URA 12, CNRS), 8 rue Buffon, 75005 Paris, France. pp.191-201 Ciencias da Terra (UNL) Lisboa NQ 11 1992 1 pI. RESUMO Palavras-chave: Eurodon- Taeniodonta- Eocenico-:-­ Silveirinha - Portugal. Eurodon silveirinhensis nov. gen., nov. sp., do Eocenico inferior de Silveirinha (portugal) econsiderado o primeiro representante, na Europa, da extinta ordem de mamiferosTaeniodonta.0 enigrnaticogeneroLessnessina Hooker, 1979, de Abbey Wood(lnglaterra), sensive1mente contcrnporaneo de Eurodon, e tambern atribufdo aos teniodontes. RESUME Mots-dis: Eurodon - Taeniodonta - Eocene­ Silveirinha - Portugal. Eurodon silveirinhensis nov. gen., nov. sp., de I'Eocene infericur de Silveirinha (portugal) est interpretee commeIapremiererepresentanteen Europedes Taeniodonta (ordre eteint de mammiferes). L'enigmatique genre Lessnessina Hooker, 1979, de Abbey Wood (Angleterre), apeu pres contemporainde Eurodon,estrapporteegalement aux Taeniodonta. ABSTRACT Key-words: Eurodon - Taeniodonta - Eocene ­ Silveirinha - Portugal. The first representative of the extinct mammalian order Taeniodonta in Europe is described, Eurodon silveirinhensis n. gen., n. sp., from the early Eocene local­ ity of Silveirinha, Portugal. A formerly enigmatic form, Lessnessina Hooker, 1979, from Abbey Wood, England, and approximately contemporary, is also referred to the Taeniodonta. 193 INTRODUCTION Type species - Eurodon silveirinhensis, new species. Study of the early Eocene mammalian fauna Diagnosis - Small mammal, smaller than any from Silveirinha, Portugal (ANTUNES, 1981; described taeniodont. M3 with large hypoconulid, ANTUNES & RUSSELL, 1981), is the subject of a apparently subequal hypoconid and slightly smaller, doctoral dissertation for one ofus (c.
    [Show full text]
  • Analysis and Correlation of Growth
    ANALYSIS AND CORRELATION OF GROWTH STRATA OF THE CRETACEOUS TO PALEOCENE LOWER DAWSON FORMATION: INSIGHT INTO THE TECTONO-STRATIGRAPHIC EVOLUTION OF THE COLORADO FRONT RANGE by Korey Tae Harvey A thesis submitted to the Faculty and Board of Trustees of the Colorado School of Mines in partial fulfillment of the requirements for the degree of Master of Science (Geology). Golden, Colorado Date __________________________ Signed: ________________________ Korey Harvey Signed: ________________________ Dr. Jennifer Aschoff Thesis Advisor Golden, Colorado Date ___________________________ Signed: _________________________ Dr. Paul Santi Professor and Head Department of Geology and Geological Engineering ii ABSTRACT Despite numerous studies of Laramide-style (i.e., basement-cored) structures, their 4-dimensional structural evolution and relationship to adjacent sedimentary basins are not well understood. Analysis and correlation of growth strata along the eastern Colorado Front Range (CFR) help decipher the along-strike linkage of thrust structures and their affect on sediment dispersal. Growth strata, and the syntectonic unconformities within them, record the relative roles of uplift and deposition through time; when mapped along-strike, they provide insight into the location and geometry of structures through time. This paper presents an integrated structural- stratigraphic analysis and correlation of three growth-strata assemblages within the fluvial and fluvial megafan deposits of the lowermost Cretaceous to Paleocene Dawson Formation on the eastern CFR between Colorado Springs, CO and Sedalia, CO. Structural attitudes from 12 stratigraphic profiles at the three locales record dip discordances that highlight syntectonic unconformities within the growth strata packages. Eight traditional-type syntectonic unconformities were correlated along-strike of the eastern CFR distinguish six phases of uplift in the central portion of the CFR.
    [Show full text]
  • Attachment J Assessment of Existing Paleontologic Data Along with Field Survey Results for the Jonah Field
    Attachment J Assessment of Existing Paleontologic Data Along with Field Survey Results for the Jonah Field June 12, 2007 ABSTRACT This is compilation of a technical analysis of existing paleontological data and a limited, selective paleontological field survey of the geologic bedrock formations that will be impacted on Federal lands by construction associated with energy development in the Jonah Field, Sublette County, Wyoming. The field survey was done on approximately 20% of the field, primarily where good bedrock was exposed or where there were existing, debris piles from recent construction. Some potentially rich areas were inaccessible due to biological restrictions. Heavily vegetated areas were not examined. All locality data are compiled in the separate confidential appendix D. Uinta Paleontological Associates Inc. was contracted to do this work through EnCana Oil & Gas Inc. In addition BP and Ultra Resources are partners in this project as they also have holdings in the Jonah Field. For this project, we reviewed a variety of geologic maps for the area (approximately 47 sections); none of maps have a scale better than 1:100,000. The Wyoming 1:500,000 geology map (Love and Christiansen, 1985) reveals two Eocene geologic formations with four members mapped within or near the Jonah Field (Wasatch – Alkali Creek and Main Body; Green River – Laney and Wilkins Peak members). In addition, Winterfeld’s 1997 paleontology report for the proposed Jonah Field II Project was reviewed carefully. After considerable review of the literature and museum data, it became obvious that the portion of the mapped Alkali Creek Member in the Jonah Field is probably misinterpreted.
    [Show full text]
  • Geology and Vertebrate Paleontology of Western and Southern North America
    OF WESTERN AND SOUTHERN NORTH AMERICA OF WESTERN AND SOUTHERN NORTH PALEONTOLOGY GEOLOGY AND VERTEBRATE Geology and Vertebrate Paleontology of Western and Southern North America Edited By Xiaoming Wang and Lawrence G. Barnes Contributions in Honor of David P. Whistler WANG | BARNES 900 Exposition Boulevard Los Angeles, California 90007 Natural History Museum of Los Angeles County Science Series 41 May 28, 2008 Paleocene primates from the Goler Formation of the Mojave Desert in California Donald L. Lofgren,1 James G. Honey,2 Malcolm C. McKenna,2,{,2 Robert L. Zondervan,3 and Erin E. Smith3 ABSTRACT. Recent collecting efforts in the Goler Formation in California’s Mojave Desert have yielded new records of turtles, rays, lizards, crocodilians, and mammals, including the primates Paromomys depressidens Gidley, 1923; Ignacius frugivorus Matthew and Granger, 1921; Plesiadapis cf. P. anceps; and Plesiadapis cf. P. churchilli. The species of Plesiadapis Gervais, 1877, indicate that Member 4b of the Goler Formation is Tiffanian. In correlation with Tiffanian (Ti) lineage zones, Plesiadapis cf. P. anceps indicates that the Laudate Discovery Site and Edentulous Jaw Site are Ti2–Ti3 and Plesiadapis cf. P. churchilli indicates that Primate Gulch is Ti4. The presence of Paromomys Gidley, 1923, at the Laudate Discovery Site suggests that the Goler Formation occurrence is the youngest known for the genus. Fossils from Member 3 and the lower part of Member 4 indicate a possible marine influence as Goler Formation sediments accumulated. On the basis of these specimens and a previously documented occurrence of marine invertebrates in Member 4d, the Goler Basin probably was in close proximity to the ocean throughout much of its existence.
    [Show full text]
  • Resolving the Relationships of Paleocene Placental Mammals
    Biol. Rev. (2015), pp. 000–000. 1 doi: 10.1111/brv.12242 Resolving the relationships of Paleocene placental mammals Thomas J. D. Halliday1,2,∗, Paul Upchurch1 and Anjali Goswami1,2 1Department of Earth Sciences, University College London, Gower Street, London WC1E 6BT, U.K. 2Department of Genetics, Evolution and Environment, University College London, Gower Street, London WC1E 6BT, U.K. ABSTRACT The ‘Age of Mammals’ began in the Paleocene epoch, the 10 million year interval immediately following the Cretaceous–Palaeogene mass extinction. The apparently rapid shift in mammalian ecomorphs from small, largely insectivorous forms to many small-to-large-bodied, diverse taxa has driven a hypothesis that the end-Cretaceous heralded an adaptive radiation in placental mammal evolution. However, the affinities of most Paleocene mammals have remained unresolved, despite significant advances in understanding the relationships of the extant orders, hindering efforts to reconstruct robustly the origin and early evolution of placental mammals. Here we present the largest cladistic analysis of Paleocene placentals to date, from a data matrix including 177 taxa (130 of which are Palaeogene) and 680 morphological characters. We improve the resolution of the relationships of several enigmatic Paleocene clades, including families of ‘condylarths’. Protungulatum is resolved as a stem eutherian, meaning that no crown-placental mammal unambiguously pre-dates the Cretaceous–Palaeogene boundary. Our results support an Atlantogenata–Boreoeutheria split at the root of crown Placentalia, the presence of phenacodontids as closest relatives of Perissodactyla, the validity of Euungulata, and the placement of Arctocyonidae close to Carnivora. Periptychidae and Pantodonta are resolved as sister taxa, Leptictida and Cimolestidae are found to be stem eutherians, and Hyopsodontidae is highly polyphyletic.
    [Show full text]
  • Late Paleocene) of the Eastern Crazy Mountain Basin, Montana
    CONTRIBUTIONS FROM THE MUSEUM OF PALEONTOLOGY THE UNIVERSITY OF MICHIGAN VOL. 26, NO. 9, p. 157-196 December 3 1, 1983 MAMMALIAN FAUNA FROM DOUGLASS QUARRY, EARLIEST TIFFANIAN (LATE PALEOCENE) OF THE EASTERN CRAZY MOUNTAIN BASIN, MONTANA BY DAVID W. KRAUSE AND PHILIP D. GINGERICH MUSEUM OF PALEONTOLOGY THE UNIVERSITY OF MICHIGAN ANN ARBOR CONTRIBUTIONS FROM THE MUSEUM OF PALEONTOLOGY Philip D. Gingerich, Director Gerald R. Smith, Editor This series of contributions from the Museum of Paleontology is a medium for the publication of papers based chiefly upon the collection in the Museum. When the number of pages issued is sufficient to make a volume, a title page and a table of contents will be sent to libraries on the mailing list, and to individuals upon request. A list of the separate papers may also be obtained. Correspondence should be directed to the Museum of Paleontology, The University of Michigan, Ann Arbor, Michigan, 48 109. VOLS. 11-XXVI. Parts of volumes may be obtained if available. Price lists available upon inquiry. MAMMALIAN FAUNA FROM DOUGLASS QUARRY, EARLIEST TIFFANIAN (LATE PALEOCENE) OF THE EASTERN CRAZY MOUNTAIN BASIN, MONTANA BY David W. ~rause'and Philip D. ~in~erich' Abstract.-Douglass Quarry is the fourth major locality to yield fossil mammals in the eastern Crazy Mountain Basin of south-central Montana. It is stratigraphically intermediate between Gidley and Silberling quarries below, which are late Torrejonian (middle Paleocene) in age, and Scarritt Quarry above, which is early Tiffanian (late Paleocene) in age. The stratigraphic position of Douglass Quarry and the presence of primitive species of Plesiadapis, Nannodectes, Phenacodus, and Ectocion (genera first appearing at the Torrejonian-Tiffanian boundary) combine to indicate an earliest Tiffanian age.
    [Show full text]
  • SUPPLEMENTARY INFORMATION: Tables, Figures and References
    Samuels et al. Evolution of the patellar sesamoid bone in mammals SUPPLEMENTARY INFORMATION: Tables, Figures and References Supplementary Table S1: Mammals$ Higher taxa Genus sp. Estimated. age of Patellar Comments# (partial) specimen, location state 0/1/2 (absent/ ‘patelloid’/ present) Sinoconodonta Sinoconodon Jurassic 0 Patellar groove absent, suggests no rigneyi (Kielan- patella Jaworowska, Cifelli & Luo, Sinoconodon is included on our 2004) phylogeny within tritylodontids. Morganucodonta Megazostrodon Late Triassic, southern 0 rudnerae (Jenkins Africa & Parrington, 1976) Morganucodonta Eozostrodon sp. Late Triassic, Wales 0 Asymmetric patellar groove, (Jenkins et al., specimens disarticulated so it is hard 1976) to assess the patella but appears absent Docodonta Castorocauda 164 Mya, mid-Jurassic, 0 Semi-aquatic adaptations lutrasimilis (Ji, China Luo, Yuan et al., 2006) Docodonta Agilodocodon 164 Mya, mid-Jurassic, 0 scansorius China (Meng, Ji, Zhang et al., 2015) Docodonta Docofossor 160 Mya 0 brachydactylus (Luo, Meng, Ji et al., 2015) Docodonta Haldanodon 150-155 Mya, Late 0 Shallow patellar groove exspectatus Jurassic, Portugal (Martin, 2005b) Australosphenida Asfaltomylos Mid-Jurassic, South ? Postcranial material absent patagonicus America (Martin, 2005a) Australosphenida Ornithorhynchus Extant 2 Platypus, genome sequenced Monotremata anatinus (Warren, Hillier, Marshall Graves et (Herzmark, 1938; al., 2008) Rowe, 1988) Samuels et al. Australosphenida Tachyglossus + Extant 2 Echidnas Monotremata Zaglossus spp. (Herzmark, 1938; Rowe, 1988) Mammaliaformes Fruitafossor 150 Mya, Late Jurassic, 0 Phylogenetic status uncertain indet. windscheffeli (Luo Colorado & Wible, 2005) Mammaliaformes Volaticotherium Late Jurassic/Early ? Hindlimb material incomplete indet. antiquus (Meng, Cretaceous Hu, Wang et al., 2006) Eutriconodonta Jeholodens 120-125 Mya, Early 0 Poorly developed patellar groove jenkinsi (Ji, Luo Cretaceous, China & Ji, 1999) Eutriconodonta Gobiconodon spp.
    [Show full text]
  • Download Paper
    1 Early Paleocene Magnetostratigraphy and Revised Biostratigraphy of the 2 Ojo Alamo Sandstone and Lower Nacimiento Formation, San Juan 3 Basin, New Mexico, USA 4 5 Andrew G. Flynn1*, Adam J. Davis1,2, Thomas E. Williamson3, Matthew Heizler4, C. William 6 Fenley IV1, Caitlin E. Leslie1, Ross Secord5, Stephen L. Brusatte6, and Daniel J. Peppe1* 7 1Terrestrial Paleoclimate Research Group, Department of Geosciences, Baylor University, Waco, 8 Texas, 76706, USA; *Corresponding authors: [email protected]; 9 [email protected] 10 2Wood PLC, Novi, Michigan, 48377, USA 11 3New Mexico Museum of Natural History and Science, Albuquerque, New Mexico, 87104, USA 12 4New Mexico Bureau of Geology & Mineral Resources, New Mexico Tech, Socorro, New 13 Mexico, USA, 87801 14 5Department of Earth and Atmospheric Sciences and University of Nebraska State Museum, 15 University of Nebraska-Lincoln, Lincoln, Nebraska, 68588, USA 16 6School of GeoSciences, University of Edinburgh, Grant Institute, James Hutton Road, 17 Edinburgh EH9 3FE, UK 18 Page 1 of 78 19 ABSTRACT 20 The lower Paleocene Ojo Alamo Sandstone and Nacimiento Formation from the San Juan Basin 21 (SJB) in northwestern New Mexico preserve arguably the best early Paleocene mammalian 22 record in North America and is the type location for the Puercan (Pu) and Torrejonian (To) North 23 American Land Mammal ages (NALMA). However, the lack of precise depositional age 24 constraints for the Ojo Alamo Sandstone and lower Nacimiento Formation has hindered our 25 understanding of the timing and pacing of mammalian community change in the SJB following 26 the Cretaceous-Paleogene mass extinction. Here we produced a high-resolution age model for 27 the Ojo Alamo Sandstone and lower Nacimiento Formation combining magnetostratigraphy and 28 40Ar/39Ar geochronology spanning the first ~3.5 Myr of the Paleocene.
    [Show full text]
  • THE PUERCO and TORREJON FORMATIONS of the NACIMIENTO GROUP' Introduction History of the Puerco History of the Torrejon Naming Of
    THE PUERCO AND TORREJON FORMATIONS OF THE NACIMIENTO GROUP' JAMES H. GARDNER CONTENTS Introduction Historyof the Puerco Historyof the Torrejon Namingof the Nacimiento Geology of the type-locality Fossils Correlations Summary Bibliography INTRODUCTION The formations of the Nacimiento group are subjects of much interest to science because of the character of their vertebrate faunas and the positions they occupy in the time-scale of geologic history. The fossil mammals of the two formations have been carefully dis- cussed by eminent paleontologists and yet but little is known of their areal distribution or stratigraphic occurrence. This paper is accom- panied by the first contribution of detailed geologic mapping in the area of their type-localities, and is the result of research which has brought forward some important facts and thrown considerable light on the problem of their faunal and stratigraphic relationships. The Nacimiento group was deposited during that long period of fresh-water conditions which prevailed over the greater part of western North America at the ending of the Cretaceous and the beginning of the Tertiary periods. In recent years paleontologists have considered the group as being earliest Tertiary in age, and thus marking the beginning of the Eocene series. It is intended in the following pages to review the formations of this group, their correlations, etc., from the first discoveries to the present time and to set forth clearly the facts of their stratigraphic ' Published by permission of the Director of the United
    [Show full text]
  • Alphabetical List
    LIST E - GEOLOGIC AGE (STRATIGRAPHIC) TERMS - ALPHABETICAL LIST Age Unit Broader Term Age Unit Broader Term Aalenian Middle Jurassic Brunhes Chron upper Quaternary Acadian Cambrian Bull Lake Glaciation upper Quaternary Acheulian Paleolithic Bunter Lower Triassic Adelaidean Proterozoic Burdigalian lower Miocene Aeronian Llandovery Calabrian lower Pleistocene Aftonian lower Pleistocene Callovian Middle Jurassic Akchagylian upper Pliocene Calymmian Mesoproterozoic Albian Lower Cretaceous Cambrian Paleozoic Aldanian Lower Cambrian Campanian Upper Cretaceous Alexandrian Lower Silurian Capitanian Guadalupian Algonkian Proterozoic Caradocian Upper Ordovician Allerod upper Weichselian Carboniferous Paleozoic Altonian lower Miocene Carixian Lower Jurassic Ancylus Lake lower Holocene Carnian Upper Triassic Anglian Quaternary Carpentarian Paleoproterozoic Anisian Middle Triassic Castlecliffian Pleistocene Aphebian Paleoproterozoic Cayugan Upper Silurian Aptian Lower Cretaceous Cenomanian Upper Cretaceous Aquitanian lower Miocene *Cenozoic Aragonian Miocene Central Polish Glaciation Pleistocene Archean Precambrian Chadronian upper Eocene Arenigian Lower Ordovician Chalcolithic Cenozoic Argovian Upper Jurassic Champlainian Middle Ordovician Arikareean Tertiary Changhsingian Lopingian Ariyalur Stage Upper Cretaceous Chattian upper Oligocene Artinskian Cisuralian Chazyan Middle Ordovician Asbian Lower Carboniferous Chesterian Upper Mississippian Ashgillian Upper Ordovician Cimmerian Pliocene Asselian Cisuralian Cincinnatian Upper Ordovician Astian upper
    [Show full text]