A New Fauna from the Colorado Group of Southern Montana

Total Page:16

File Type:pdf, Size:1020Kb

A New Fauna from the Colorado Group of Southern Montana A NEW FAUNA FROM THE COLORADO GROUP OF SOUTHERN MONTANA. By JoHN B. REESIDE, Jr. Feet. INTRODUCTION. Telegraph Creek formation......... 320-350 Sandstones and shales. This group of beds con­ This paper describes a small but interesting tains at places in the upper part a fauna like that fauna collected in 1921 by W. T. Thorn, jr., of the Eagle sandstone, but in the lower beds it Gail F. Moulton, T. W. Stanton, and K. C. contains Uintacrinus sp., Marsupites sp. (identi­ Heald in the Crow Indian Reservation in fied by Frank Springer), Inoceramus dejormis southern Montana. The locality is in sec. 36, Meek var., Ostrea cf. 0. congesta Conrad, Baculites sp., Puzosia (Latidorsella) n. sp., and Scaphites n. T. 6 S., R. 32 E ., Big Horn County, and is 2 sp. aff. S. geinitzi D'Orbigny. • miles east of the Soap Creek oil field. Niobrara formation (top formation of Colorado The stratigraphic section in the Soap Creek group)"........................................ 400 oil field was described briefly by Thorn and Bluish calcareous shale in upper and lower Moulton in a press notice issued by the United parts; dark shale in middle. In the upper part it contains Uintacrinus socialis Grinnell (identified States Geological Survey December 5, 1921, by Frank Springer), Yoldia sp., Inoceramus, large entitled "The Soap Creek oil field, Crow Indian thick-shelled species, Ostrea congesta Conrad, Reservation, Mont." It was described also in Lunatia concinna (Hall and Meek), Tessarolax cf. a later and more general paper.1 The youngest T. hitzi White, Baculites sp., Scaphites vermi- beds present near the oil field belong to the formis Meek and Hayden, and fish scales. In the middle part it contains Inoceramus aff. I. lamarcki Niobrara formation, but in the adjacent parts Parkinson, Inoceramus umbonatus Meek and Hay­ of the Crow Reservation to the east and north den, Inoceramus, large thick-shelled species, higher formations are present and are in part Pteria aff. P. nebrascensis (Evans and Shumard), included in the section given below. The part Anatina aff. A . subgracilis (Whitfield), Veniella of the section from the Cloverly formation to goniophora Meek, Cardium n. sp., Fusus sp., Volu­ toderma sp., Baculites aff. B. anceps Lamarck, the Niobrara formation, inclusive, is derived Baculites asper Morton, Scaphites vermiformis Meek frmn the publications mentioned above and and Hayden. In the lower part it contains from data kindly supplied by Mr. Thorn. The Inoceramus, large thick-shelled species, Ostrea thicknesses given for the Eagle sandstone and congesta Conrad, and the basal bed, a zone of large the Telegraph Creek formation apply especially yellow concretions, contains Yoldia sp., Nemodon to the vicinity of Pryor Creek, some 30 miles sp., Barbatia n. sp., Inoceramus jragilis (Hall and Meek)?, Inoceramus (Actinoceramus) n . sp., Veni­ north of the Soap Creek oil field. The included ella goniophora Meek, Callista tenuis (Hall and lists of fossils are based on the writer's deter­ Meek), Corbula cf. C. nematophora Meek, Denta­ minations. lium sp., Gyrodes aff. G. petrosa (Morton), Turri­ tella aff. T. whitei Stanton, Anchura sp. ,· Nautilus .Partial section of forma:tions exposed in the Crow Indian sp., Baculites sp., and Scaphites vermiformis Meek Reservat-ion, Mont. and Hayden. Feet. Carlile shale..... ............................... 425 :Eagle sandstone ............................ ... 200-250 This formation may be divided into a number of Sandstones and some shales; at base the massive units as follows: . Virgelle sandstone member. This formation con­ Dark shale with whitish septarian nodules con­ tains Scaphites hippocrepis (Dekay), Scaphites n. taining Inoceramus labiatus (Schlotheim), Ve­ sp. aff. S. aquisgranensis Schlueter, Inoceramus n,iella goniophora Meek, Corbula aff. C. nemato­ aff. I. lobatus Goldfuss, Placenticeras syrtale (Mor­ phora Meek, Pseudomelania? sp., Fusus sp., ton), Placenticeras meeki Boehm, Placenticeras Prionocyclus wyomingensis Meek. Thickness 50 planum Hyatt, Baculites ovatus Say, Baculites feet. as per Morton, Baculites n. sp. aff. B. anceps Zone of large yellowish · sandstone concretions. Lamarck, and many other fossils. Thickness 5 feet. Dark shale. Thickness 35 feet. 1 Thorn, W. T., jr., Oil and gas prospects-in and near the Crow Indian ·R eservation, Mont.: U . S. Geol. Survey Bull. 736, pp. 35-53, 1922 Shale with thin hard rusty red concretions and ·(Bull. 7313-B) layers containing Inoceramus fragilis Hall and 25 26 SHORTER CONTRJBUTIONS TO GENERAL GEOLOGY, 1923. Feet. region. It is therefore of interest to consider Meek, Inoceramus cf. I. lamarcki Parkinson, Veniella sp., Volutoderma? sp., Baculites gracilis some of the faunal zones recognizable in the Shumard, Scaphites warreni Meek and Hayden, Cretaceous deposits of this province. Prionotropisaff. P. woolgari (Mantell). Thickness A series of more or less widespread and more 30 feet. · or less distinctly defined faunal zones have Dark shale. Thickness 60 feet. Bluish calcareous shale containing in ita lower long been recognized in the Cretaceous de­ part the fauna described in this paper. Thick­ posits of the Western Interior. The lowest ness 100 feet. zone to be considered here is well characterized Dark shale and bentonite. Thic~ss 145 feet. only in the southern part of the province, where Frontier formation...... 410 it contains Exogyra columbella Meek and Chiefly dark shale with bentonite but with a zone of thin coarse sandstones near the top. Gryphaea newberryi Stanton as its guide fossils. Shark teeth the only fossils observed. This zone includes the Graneros shale of the Mowry shale.... • . 200-300 central Great Plains, the basal part of the Hard bluish-white sha1e with layers of hard dark Mancos shale of New Mexico, Colorado, and shale. Contains abundant :fish remains but ~ew Utah, and the Thermopolis shale of the north. other fossili. Thermopolis shale.. 550-800 At many places, especially in the north, it is Dark marine shale with streaks and lenses of nearly barren of fossils, and those present are light-colored sandstone containing Inoceramus not sufficiently restricted to serve as guide labiatus (Schlotheim), Pteria aff. P. nebrascensis fossils. (Meek and Hayden), Ostrea sp., Entolium sp., Mo­ Above this zone occurs a zone with an diola n. sp., Gyrodes aff. G. depressa Meek, fish and turtle remains. Middle part of formation of dark abrindance of Inoceramus labiatus (Schlotheim). clay and bentonite;lowerpartofdarkmarineshale. In the central Great Plains region this zone is Cloverly formation. ... 320-425 contained in the Greenhorn limestone, and An upper member of sandy shale and thin-bed- very few other fossils than the guide fossil ded rusty sandstone that may represent the have been found in it. In western Colorado Dakota sandstone of Upper Cretaceous age. A middle member consisting of variegated shale and the adjacent region it is well marked in where exposed along the Big Horn Mountains and the lower part of the Mancos shale. It occurs containing Unio sp. and Viviparusf sp. and a in southern and central Wyoming in the basal member of thick coarse-grained conglom­ Frontier formation and in northern Montana eratic sandstone. These divisions may repre- . in the lower part of the Colorado shale. sent the Fuson shale and Lakota sandstone, of Above this zone of Inoceramus labiatuslies a Lower Cretaceous age. zone which contains as its more prominent and THE FAUNA AND ITS RELATIONS. restricted species Scaphites warreni Meek and The collection described in this paper con­ Hayden, several species each of Prionotropis, tains five species of ammonites referred to and Prionocyclus, Inoceramus fragilis Hall and three genera, two species of Inoceramus, an Meek, Inoceramus dimidius White, and Ostrea ostreid, and a gastropod. lugubris Conrad. It very rarely co~tains The species are as follows: Inoceramus labiatus (Schlotheim). This zone V ascoceras thomi Reeside, n. sp. is perhaps the most sharply defined and most Vascoceras moultoni Reeside, n. sp. widely .recognized of the series. It comprises Vascoceras stantoni Reeside, n. sp. the entire Carlile shale of the central Great Vascoceras sp. undeterminable. Plains and Black Hills regions, part of the Pseudotissotia (Choffaticeras) sp.? Helicoceras pariense White? Mancos shale of western Colorado and adjacent Inoceramus labiatus (Schlotheim). regions, the Carlile shale of Wyoming, and part Inoceramus sp. undetermined. of the Colorado formation of Montana. Ostrea or Exogyra sp. Above the zone of Scaphites warreni comes a Gastropod, undetermined. zone which contains Uintacrinus socialis Grin­ This fauna is known from only this one nell, Inoceramus umbonatus Meek and Hayden, locality in the Western Interior province of Inoceramus deformis Meek, and, especially in North America, and consequently its correla­ the north, Scaphites ventricosus Meek and tion must rest in large part on its position with Hayden and Scaphites vermiformis Meek and relation to other faunal zones in the same Hayden. A very abundant and locally re­ stratigraphic section and in the adjacent stricted form of this zone is Ostrea congesta A NEW FAUN A FROM THE COLORADO GROUP OF SOUTHER.N MONTANA. 27 Conrad. Inoceramus labiatus is reported in the correlated with at least the upper part of the literature as occurring here also, but it has not Greenhorn limestone of the central Great been found in numerous recent collections, and Plains, though the occurrence of Inoceramus its earlier assignment to the fauna of this zone labiatus in beds some 800
Recommended publications
  • Handbook of Texas Cretaceous Fossils
    University of Texas Bulletin No. 2838: October 8, 1928 HANDBOOK OF TEXAS CRETACEOUS FOSSILS B y W. S. ADKINS Bureau of Economic Geology J. A. Udden, Director E. H. Sellards, Associate Director PUBLISHED BY THE UNIVERSITY FOUR TIMES A MONTH, AND ENTERED AS SECOND-CLASS MATTER AT THE POSTOFFICE AT AUSTIN, TEXAS. UNDER THE ACT OF AUGUST 24. 1912 The benefits of education and of useful knowledge, generally diffused through a community, are essential to the preservation of a free govern­ m en t. Sam Houston Cultivated mind is the guardian genius of democracy. It is the only dictator that freemen acknowl­ edge and the only security that free­ men desire. Mirabeau В. Lamar CONTENTS P age Introduction __________________________________________________ 5 Summary of Formation Nomenclature_______________________ 6 Zone Markers and Correlation_______________________________ 8 Types of Texas Cretaceous Fossils___________________________ 36 Bibliography ________________________________________________ 39 L ist and Description of Species_________________________________ 46 P lants ______________________________________________________ 46 Thallophytes ______________________________________________ 46 Fungi __________________________________________________ 46 Algae __________________________________________________ 47 Pteridophytes ____________________________________________ 47 Filices __________________________________________________ 47 Spermatophytes __________________________________________ 47 Gymnospermae _________________________________________
    [Show full text]
  • Morrison Formation 37 Cretaceous System 48 Cloverly Formation 48 Sykes Mountain Formation 51 Thermopolis Shale 55 Mowry Shale 56
    THE STRUCTURAL AND STRATIGRAPHIC FRAMEWORK OF THE WARM SPRINGS RANCH AREA, HOT SPRINGS COUNTY, WYOMING By CHRISTOPHER JAY CARSON Bachelor of Science Oklahoma State University 1998 Submitted to the Faculty of the Graduate College of the Oklahoma State University in partial fulfillment of the requirements for the Degree of MASTER OF SCIENCE July, 2000 THE STRUCTURAL AND STRATIGRAPHIC FRAMEWORK OF THE WARM SPRINGS RANCH AREA, HOT SPRINGS COUNTY, WYOMING Thesis Approved: Thesis Advisor ~~L. ... ~. ----'-"'-....D~e~e:.-g-e----- II ACKNOWLEDGEMENTS I wish to express appreciation to my advisor Dr. Arthur Cleaves for providing me with the opportunity to compile this thesis, and his help carrying out the fieldwork portion of the thesis. My sincere appreciation is extended to my advisory committee members: Dr. Stan Paxton, Dr. Gary Stewart, and Mr. David Schmude. I wish to thank Mr. Schmude especially for the great deal of personal effort he put forth toward the completion of this thesis. His efforts included financial, and time contributions, along with invaluable injections of enthusiasm, advice, and friendship. I extend my most sincere thank you to Dr. Burkhard Pohl, The Big Hom Basin Foundation, and the Wyoming Dinosaur Center. Without whose input and financial support this thesis would not have been possible. In conjunction I would like to thank the staff of the Wyoming Dinosaur Center for the great deal of help that I received during my stay in Thermopolis. Finally I wish to thank my friends and family. To my friends who have pursued this process before me, and with me; thank you very much.
    [Show full text]
  • Les Vascoceratinae Et Les Pseudotissotiinae
    LES VASCOCERATINAE ET LES PSEUDOTISSOTIINAE (AMMONITINA) D'ASHAKA (NE NIGERIA) : RELATIONS AVEC LEUR ENVIRONNEMENT BIOSÉDIMENTAIRE THE VASCOCERATINAEA AND PSEUDOTISSOTIINAEA (AMMONITINA) FROM ASHAKA (NE NIGERIA) : RELATIONSHIPS WlTH THE BIOSEDIMENTARY ENVIRONMENT Philippe COURVILLE COURVILLE Ph. (1992) - Les Vascoceratnae et es Pseudotssotinae (Ammonitina) d'Açhaka (NE Ngera) . relatons avec leur enviannement blosedimentare [The Vaçcoceia1,naea and Psetidotfssoti!naea jAmmon,ti.?s) fiom As,ba,ks (NE Nigeria) relationsh!ps with the biosedimentary enviionment] - Bull. Centres Rech Explof.- Prod EliAquitaine. 16. 2 407~457.8 f~y, 14 p.. Bo~ssensDecember 24, 19'32 - SSN : 0396~2687 CODEN. BCREDP A purdscpnary analyss groupng the sedtmentary yeo,ogy, the sequenta! stratgraphy. !he mcropaleonto1og;cal and nacropaeontologcal aspec!s. allows us 10 renterpret tbe marine çecton of the Gonga Formaton (hypostratotypc Ashaka sect~on).The paleartolag~cal successlonç (benthon~carganiçtrç and Ammonlte papulatons) and the sedmentary unis (ensembles mted by two d!scontinutes) cari now oe deçcrbed accurateiy A dynamc nterpretator of the seres of Ammonte papulatons s proposed for the local framework of the Ashaka ste some taxa coud beong to .. autochthonous ,, neages (Vascoceratnae and Pseudotsçatnae) others are corsdered ta be ., exo~ ric ,. elements (Fagesra and Pseodaspidoceras) The settements of the Cer,omanan and Turonan marne envronments seem to be w~th~na few steps reach. Fi'çt of a. tïe progreçslve settng of subplatycone 01 paty~spheroconetethysan Vascoceratds (Nigeiiceras and V gr cauv!ni) can be obçerved Ths ç folowed by the suaden .. appearance .. of cad-serperllcone Ammontes, whch quicky dr~fttowards cad-spherocone forms (frst morphologcal c:sls) Then a second morpnolagica crlsls occurç.
    [Show full text]
  • Stratigraphic Framework of the Cretaceous Mowry Shale, Frontier
    Chapter 15 Stratigraphic Framework of the Cretaceous Mowry Shale, Frontier Formation and Adjacent Units, Southwestern Wyoming Province, Volume Title Page Wyoming, Colorado, and Utah By Mark A. Kirschbaum and Laura N.R. Roberts Chapter 15 of Petroleum Systems and Geologic Assessment of Oil and Gas in the Southwestern Wyoming Province, Wyoming, Colorado, and Utah By USGS Southwestern Wyoming Province Assessment Team U.S. Geological Survey Digital Data Series DDS–69–D U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior Gale A. Norton, Secretary U.S. Geological Survey Charles G. Groat, Director U.S. Geological Survey, Denver, Colorado: Version 1, 2005 For sale by U.S. Geological Survey, Information Services Box 25286, Denver Federal Center Denver, CO 80225 For product and ordering information: World Wide Web: http://www.usgs.gov/pubprod Telephone: 1-888-ASK-USGS For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment: World Wide Web: http://www.usgs.gov Telephone: 1-888-ASK-USGS Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted materials contained within this report. Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government. Manuscript approved for publication May 10, 2005 ISBN= 0-607-99027-9 Contents Abstract ………………………………………………………………………………………
    [Show full text]
  • Classification of Ammonitic Sutures Using Gis
    Palaeontologia Electronica http://palaeo-electronica.org PATTERN MATCHING: CLASSIFICATION OF AMMONITIC SUTURES USING GIS Lori L. Manship ABSTRACT Geographic Information Systems (GIS) is utilized to apply spatial analysis tech- niques to visually and quantitatively match ammonoid suture patterns for classification. The Turonian ammonite family Coilopoceratidae was chosen as the basis for this project, because the similar suture patterns within the family make species-level identi- fication a challenge. A Coilopoceras springeri suture template was created by overlay- ing 10 different Coilopoceras springeri suture patterns, using the right holotype suture pattern as the basal or designation guide. Templates for Coilopoceras colleti and Hopli- toides sandovalensis sutures were constructed in the same manner. Sutures of known and unknown specimens were tested within the templates in order to identify species. The sutures of known specimens matched with the correct templates and did not com- pare well with other species’ templates. Sutures of unknown specimens clearly fit within one template better than within others and, hence, could be reliably classified to the species level. In addition to species classification, the GIS method provides a mechanism for both visual and quantitative comparisons of individual sutures. This GIS method will aid professional and avocational paleontologists, biostratigraphers, and geologists in classifying ammonite species, and may help further our understanding of suture morphogenesis and function by providing a standard basis for morphological comparison of complex sutural patterns. Department of Geosciences, Texas Tech University, Lubbock, Texas, 79409-1053, USA. [email protected] KEY WORDS: ammonite; Geographic Information Systems (GIS); suture pattern; Turonian; Cretaceous PE Article Number: 7.2.5A Copyright: Paleontological Society.
    [Show full text]
  • Upper Cretaceous Crustacea from Mexico and Colombia: Similar Faunas and Environments During Turonian Times
    Revista Mexicana de Ciencias Geológicas, Turonianv. 24, núm. Crustacea 3, 2007, p.from 403-422 Mexico and Colombia 403 Upper Cretaceous Crustacea from Mexico and Colombia: similar faunas and environments during Turonian times Francisco J. Vega1,*, Torrey Nyborg2, Alexis Rojas-Briceño3, Pedro Patarroyo3, Javier Luque4, Héctor Porras-Múzquiz5, and Wolfgang Stinnesbeck6 1 Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, 04510 México, D.F., Mexico. 2 Department of of Earth and Biological Sciences, Loma Linda University, Loma Linda CA, 92350, USA. 3 Departamento de Geociencias, Universidad Nacional de Colombia, A. A. 14490, Bogotá, Colombia. 4 Smithsonian Tropical Research Institute. Apartado Postal 0843-03092, Balboa, Ancon, Panama. 5 Museo de Múzquiz A. C., Zaragoza 209, 26340, Múzquiz, Coahuila, Mexico. 6 Geologisch-Paläontologisches Institut, Im Neuenheimer Feld 234, 69120 Heidelberg, Germany. * [email protected] ABSTRACT Nine taxa represent the crustacean component of the Turonian fauna from the Eagle Ford Group limestones and marls that crop out in several quarries, northwest of Múzquiz, Coahuila, Mexico. Three crustacean taxa are found in common with deposits of similar age and paleoenvironment of the San Rafael Formation of Colombia. Planktic foraminifera, ammonoids, inoceramid bivalves, shes, marine reptiles, a pterosaur and plant remains were preserved in the Múzquiz quarries, in what has been interpreted as an anoxic, low energy bottom at a water depth of no less than 50 m. The cirriped Stramentum preserved on the ammonite Forresteria is described. Stomatopod remains of the family Pseudosculdidae are described, their incompleteness and poor preservation prevent their detailed identi cation. One species of scyllarid lobster is included.
    [Show full text]
  • Phylogeny, Diversity, and Ecology of the Ammonoid Superfamily Acanthoceratoidea Through the Cenomanian and Turonian
    PHYLOGENY, DIVERSITY, AND ECOLOGY OF THE AMMONOID SUPERFAMILY ACANTHOCERATOIDEA THROUGH THE CENOMANIAN AND TURONIAN DAVID A.A. MERTZ A Thesis Submitted to the Graduate College of Bowling Green State University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 2017 Committee: Margaret Yacobucci, Advisor Andrew Gregory Keith Mann © 2017 David Mertz All Rights Reserved iii ABSTRACT Margaret Yacobucci Both increased extinction and decreased origination, caused by rising oceanic anoxia and decreased provincialism, respectively, have been proposed as the cause of the Cenomanian Turonian (C/T) extinction event for ammonoids. Conflicting evidence exists for whether diversity actually dropped across the C/T. This study used the ammonoid superfamily Acanthoceratoidea as a proxy for ammonoids as a whole, particularly focusing on genera found in the Western Interior Seaway (WIS) of North America, including Texas. Ultimately, this study set out to determine 1) whether standing diversity decreased across the C/T boundary in the WIS, 2) whether decreased speciation or increased extinction in ammonoids led to a drop in diversity in the C/T extinction event, 3) how ecology of acanthoceratoid genera changed in relation to the C/T extinction event, and 4) whether these ecological changes indicate rising anoxia as the cause of the extinction. In answering these questions, three phylogenetic analyses were run that recovered the families Acanthoceratidae, Collignoniceratidae, and Vascoceratidae. Pseudotissotiidae was not recovered at all, while Coilopoceratidae was recovered but reclassified as a subfamily of Vascoceratidae. Seven genera were reclassified into new families and one genus into a new subfamily. After calibrating the trees with stratigraphy, I was able to determine that standing diversity dropped modestly across the C/T boundary and the Early/Middle Turonian boundary.
    [Show full text]
  • Sucesión De Amonitas Del Cretácico Superior (Cenomaniano – Coniaciano) De La Parte Más Alta De La Formación Hondita Y De L
    Boletín de Geología Vol. 33, N° 1, enero-junio de 2011 SUCESIÓN DE AMONITAS DEL CRETÁCICO SUPERIOR (CENOMANIANO – CONIACIANO) DE LA PARTE MÁS ALTA DE LA FORMACIÓN HONDITA Y DE LA FORMACIÓN LOMA GORDA EN LA QUEBRADA BAMBUCÁ, AIPE - HUILA (COLOMBIA, S. A.) Pedro Patarroyo1 RESUMEN La sección de la quebrada Bambucá (Aipe - Huila) posee una buena exposición de los depósitos del Cretácico del Valle Superior del Magdalena. De la parte alta de la Formación Hondita se recolectaron Acanthoceras sp. y Rhynchostreon sp. del Cenomaniano superior. Dentro del segmento inferior de la Formación Loma Gorda se hallaron Choffaticeras (C.) cf. segne, Fagesia cf. catinus, Neoptychites cf. andinus, Mitonia gracilis, Morrowites sp., Nannovascoceras ? sp., Quitmaniceras ? sp., Benueites ? sp. junto con Mytiloides kossmati, M. goppelnensis y Anomia sp. del Turoniano inferior. Estratigráficamente arriba aparecen Paramammites ? sp., Hoplitoides sp. H. ingens, H. cf. lagiraldae, Codazziceras ospinae, Allocrioceras sp., que pueden estar representando entre el Turoniano inferior y medio. Para la parte alta de este segmento se encontraron Prionocycloceras sp. P. guayabanum, Reesidites subtuberculatum, Subprionotropis colombianus, Mytiloides scupini, Dydimotis sp., Gauthiericeras sp., Anagaudryceras ? sp., Eulophoceras jacobi, Paralenticeras sieversi, Hauericeras cf. madagascarensis, Peroniceras (P.) subtricarinatum, Forresteria (F.) sp., Barroisiceras cf. onilahyense, Ankinatsytes venezolanus que abarcan entre el Turoniano superior y el Coniaciano. Con base en la fauna colectada no es posible establecer los límites Cenomaniano/Turoniano y Turoniano/Coniaciano. Palabras clave: Amonitas, Cretácico superior, Valle Superior del Magdalena, Aipe-Huila-Colombia. UPPER CRETACEOUS AMMONITE SUCCESSION (CENOMANIAN – CONIACIAN) RELATED TO THE UPPER HONDITA AND LOMA GORDA FORMATIONS ALONG THE BAMBUCÁ CREEK, AIPE - HUILA (COLOMBIA, S.A.) ABSTRACT The Bambucá creek section (Aipe - Huila) shows a very good exposition of the Upper Magdalena Valley Cretaceous deposits.
    [Show full text]
  • Mid-Cretaceous Ammonite Sequence for Western New Mexico Iv
    iii Contents ABSTRACT 5 Genus Morrowites Cobban and Hook, n. gen. 9 Morrowites wingi (Morrow) 9 INTRODUCTION 5 M. depressus (Powell) 11 COMPOSITION OF MOLLUSCAN FAUNA 5 M. subdepressus Cobban and Hook, n. sp. 11 OCCURRENCE AND PRESERVATION OF FOSSILS 6 M. cf. M. dixeyi (Reyment) 12 STRATIGRAPHIC POSITION OF FOSSILS 6 Subfamily Euomphaloceratinae Cooper 13 COLLECTION LOCALITIES 7 Genus Kamerunoceras Reyment 13 Kamerunoceras turoniense (d'Orbigny) 13 FAMILY VASCOCERATIDAE H. Douvillé 14 SYSTEMATIC PALEONTOLOGY 7 Subfamily Vascoceratinae H. Douvillé 14 FAMILY BACULITIDAE GILL 7 Genus Neoptychites Kossmat 14 Genus Baculites Lamarck 7 Neoptychites cephalotus (Courtiller) 14 Baculites yokoyamai Tokunaga and Shimizu 7 Genus Fagesia Pervinquière 15 FAMILY MUNIERICERATIDAE WRIGHT 7 Fagesia superstes (Kossmat) 16 Genus Tragodesmoceras Spath 7 FAMILY C OLLIGNONICERATIDAE WRIGHT AND WRIGHT 16 Tragodesmoceras socorroense Cobban and Hook 7 Subfamily Barroisiceratinae Basse 16 FAMILY PLACENTICERATIDAE HYATT 8 Genus Cibolaites Cobban and Hook, n. gen. 16 Genus Placenticeras Spath 8 Cibolaites molenaari Cobban and Hook, n. sp. 16 Placenticeras cumminsi Cragin 8 REFERENCES 18 FAMILY ACANTHOCERATIDAE DE GROSSOUVRE 8 Subfamily Mammitinae Hyatt 8 Genus Mammites PLATES 1-14 21 Laube and Bruder 8 INDEX 50 Mammites nodosoides (Schluter) 8 TABLE 1—Mid-Cretaceous ammonite sequence for western New Mexico iv FIGURES 1—Location of study area 5 9—Histogram of size and body chambers of Neoptychites 2—External sutures of Mammites nodosoides (Schluter) 9 3— cephalotus (Courtiller) 14 Whorl sections of Morrowites wingi (Morrow) 10 4—External 10—Scatter diagram of breadth to diameter ratio of Neop- suture of Morrowites wingi (Morrow) 10 5—Whorl section and tychites 14 suture of Morrowites depressus 11—External sutures of Neoptychites cephalotus (Cour-tiller) 15 (Powell) 11 12—External suture of Fagesia superstes (Kossmat) 16 13— 6—External sutures of Morrowites subdepressus Cobban and Histogram of size of body chambers of Cibolaites molenaari Hook, n.
    [Show full text]
  • A Preliminary Assessment of Paleontological Resources at Bighorn Canyon National Recreation Area, Montana and Wyoming
    A PRELIMINARY ASSESSMENT OF PALEONTOLOGICAL RESOURCES AT BIGHORN CANYON NATIONAL RECREATION AREA, MONTANA AND WYOMING Vincent L. Santucci1, David Hays2, James Staebler2 And Michael Milstein3 1National Park Service, P.O. Box 592, Kemmerer, WY 83101 2Bighorn Canyon National Recreation Area, P.O. Box 7458, Fort Smith, MT 59035 3P.O. Box 821, Cody, WY 82414 ____________________ ABSTRACT - Paleontological resources occur throughout the Paleozoic and Mesozoic formations exposed in Bighorn Canyon National Recreation Area. Isolated research on specific geologic units within Bighorn Canyon has yielded data on a wide diversity of fossil forms. A comprehensive paleonotological survey has not been previously undertaken at Bighorn Canyon. Preliminary paleontologic resource data is presented in this report as an effort to establish baseline data. ____________________ INTRODUCTION ighorn Canyon National Recreation Area (BICA) consists of approximately 120,000 acres within the Bighorn Mountains of north-central Wyoming and south-central Montana B (Figure 1). The northwestern trending Bighorn Mountains consist of over 9,000 feet of sedimentary rock. The predominantly marine and near shore sedimentary units range from the Cambrian through the Lower Cretaceous. Many of these formations are extremely fossiliferous. The Bighorn Mountains were uplifted during the Laramide Orogeny beginning approximately 70 million years ago. Large volumes of sediments, rich in early Tertiary paleontological resources, were deposited in the adjoining basins. This report provides a preliminary assessment of paleontological resources identified at Bighorn Canyon National Recreation Area. STRATIGRAPHY The stratigraphic record at Bighorn Canyon National Recreation Area extends from the Cambrian through the Cretaceous (Figure 2). The only time period during this interval that is not represented is the Silurian.
    [Show full text]
  • Rediscovery of the Holotypes of the Cenomanian (Upper Cretaceous) Ammonites Vascoceras Gamai Choffat, 1898, and Vascoceras Barcoicense (Choffat, 1898)
    Cretaceous Research 56 (2015) 647e650 Contents lists available at ScienceDirect Cretaceous Research journal homepage: www.elsevier.com/locate/CretRes Short communication Rediscovery of the holotypes of the Cenomanian (Upper Cretaceous) ammonites Vascoceras gamai Choffat, 1898, and Vascoceras barcoicense (Choffat, 1898) * Fernando Barroso-Barcenilla a, b, , Jose Manuel Brandao~ c, Pedro Miguel Callapez d, e, Vanda Faria dos Santos e, f a Grupo de Investigacion IberCreta, Departamento de Geología y Geografía, Facultad de Ciencias, Universidad de Alcala de Henares, 28871 Alcalade Henares, Spain b Grupo de Investigacion Procesos Bioticos Mesozoicos, Departamento de Paleontología, Facultad de Ciencias Geologicas, Universidad Complutense de Madrid, 28040 Madrid, Spain c Instituto de Historia Contemporanea,^ Centro de Estudos de Historia e FilosofiadaCi^encia, Universidade de Evora, 7000-554 Evora, Portugal d Departamento de Ci^encias da Terra, Faculdade de Ci^encias e Tecnologia, Universidade de Coimbra, 3030-790 Coimbra, Portugal e Centro de Investigaçao~ da Terra e do Espaço, Universidade de Coimbra, 3000-134 Coimbra, Portugal f Museu Nacional de Historia Natural e da Ci^encia, Universidade de Lisboa, 1250-102 Lisboa, Portugal article info abstract Article history: The historical holotypes of the Cenomanian (Upper Cretaceous) ammonites Vascoceras gamai Choffat, Received 23 January 2015 1898 (type of the genus), and Vascoceras barcoicense (Choffat, 1898), thought to be destroyed by the fire of Received in revised form March 1978 at the National Museum of Natural History, Lisbon, Portugal, have been rediscovered in good 10 June 2015 state of preservation. Based on the study of the originals, these upper Cenomanian specimens can be Accepted in revised form 27 June 2015 rehabilitated as holotypes, maintaining and justifying the status of both taxa as well as of Vascoceras Available online 30 July 2015 cauvini Chudeau, 1909.
    [Show full text]
  • Fracture Analysis of Circum-Bighorn Basin Anticlines
    FRACTURE ANALYSIS OF CIRCUM-BIGHORN BASIN ANTICLINES, WYOMING-MONTANA by Julian Stahl A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Earth Science MONTANA STATE UNIVERSITY Bozeman, Montana November 2015 ©COPYRIGHT by Julian Stahl 2015 All Rights Reserved ii DEDICATION I dedicate this thesis to my brother, Manuel Stahl, who provided me with the inspiration and drive to pursue a degree that I am truly passionate about. iii ACKNOWLEDGEMENTS The research presented in this document would not have been as thought- provoking and thorough without the help of my mentors and peers. My advisor, Dr. David Lageson helped formulate the project idea and was fundamental throughout the course of my study in leading me in the right direction and always being available to answer questions. I would also like to extend my gratitude to my committee members, Dr. Colin Shaw and Dr. Jean Dixon, for providing me with the necessary assistance and expertise. I would also like to thank my fellow geology peers at Montana State University. Without the constant communication and discussions with Mr. Jacob Thacker, Mr. Travis Corthouts and Mrs. Anita Moore-Nall this project would not have come to fruition. I would also like to offer my sincere appreciation to my two field assistants, Mr. Evan Monroe and Miss Amy Yoder, for taking the time out of their lives to help unravel the geology of the Bighorn Basin in the field. I would like to express my gratitude to my entire family, Dr. Johannes Stahl, Ms. Gabriele Stahl and Mr.
    [Show full text]