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Evolutionary and Functional Implications of Incisor Enamel Microstructure Diversity in Notoungulata (Placentalia, Mammalia)
Journal of Mammalian Evolution https://doi.org/10.1007/s10914-019-09462-z ORIGINAL PAPER Evolutionary and Functional Implications of Incisor Enamel Microstructure Diversity in Notoungulata (Placentalia, Mammalia) Andréa Filippo1 & Daniela C. Kalthoff2 & Guillaume Billet1 & Helder Gomes Rodrigues1,3,4 # The Author(s) 2019 Abstract Notoungulates are an extinct clade of South American mammals, comprising a large diversity of body sizes and skeletal morphologies, and including taxa with highly specialized dentitions. The evolutionary history of notoungulates is characterized by numerous dental convergences, such as continuous growth of both molars and incisors, which repeatedly occurred in late- diverging families to counter the effects of abrasion. The main goal of this study is to determine if the acquisition of high-crowned incisors in different notoungulate families was accompanied by significant and repeated changes in their enamel microstructure. More generally, it aims at identifying evolutionary patterns of incisor enamel microstructure in notoungulates. Fifty-eight samples of incisors encompassing 21 genera of notoungulates were sectioned to study the enamel microstructure using a scanning electron microscope. We showed that most Eocene taxa were characterized by an incisor schmelzmuster involving only radial enamel. Interestingly, derived schmelzmusters involving the presence of Hunter-Schreger bands (HSB) and of modified radial enamel occurred in all four late-diverging families, mostly in parallel with morphological specializations, such as crown height increase. Despite a high degree of homoplasy, some characters detected at different levels of enamel complexity (e.g., labial versus lingual sides, upper versus lower incisors) might also be useful for phylogenetic reconstructions. Comparisons with perissodactyls showed that notoungulates paralleled equids in some aspects related to abrasion resistance, in having evolved transverse to oblique HSB combined with modified radial enamel and high-crowned incisors. -
Pamphlet to Accompany Geologic Map of the Apache Canyon 7.5
GEOLOGIC MAP AND DIGITAL DATABASE OF THE APACHE CANYON 7.5’ QUADRANGLE, VENTURA AND KERN COUNTIES, CALIFORNIA By Paul Stone1 Digital preparation by P.M. Cossette2 Pamphlet to accompany: Open-File Report 00-359 Version 1.0 2000 This report is preliminary and has not been reviewed for conformity with U. S. Geological Survey editorial standards. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U. S. Government. This database, identified as "Geologic map and digital database of the Apache Canyon 7.5’ quadrangle, Ventura and Kern Counties, California," has been approved for release and publication by the Director of the USGS. Although this database has been reviewed and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. This database is released on condition that neither the USGS nor the U. S. Government may be held liable for any damages resulting from its use. U.S. Geological Survey 1 345 Middlefield Road, Menlo Park, CA 94025 2 West 904 Riverside Avenue, Spokane, WA 99201 1 CONTENTS Geologic Explanation............................................................................................................. 3 Introduction................................................................................................................................. 3 Stratigraphy................................................................................................................................ 4 Structure .................................................................................................................................... -
Oreodonts of the Tick Canyon Formation , Southern California
PALE0B10s Contributions from the University of California Museum of Paleontology, Berkeley No. I June 15, 1967 OREODONTS OF THE TICK CANYON FORMATION , SOUTHERN CALIFORNIA by David P. Whistler OREODONTS OF THE TICK CANYON FORMATION, SOUTHERN CALIFORNIA BY DAVID P. WHISTLER In 1940, Richard H. Jahns reviewed the stratigraphy of the nonmarine Mint Canyon Formation in the eastern part of the Ventura Basin and separated from it a new formation and fauna. Previous to this work, a controversy existed as to the age of the Mint Canyon Formation, for it contained vertebrates considered indicative of both the Miocene and Pliocene (Kew, 1924, Maxson, 1930, and Stirton, 1933). As a partial solut,ion to this controversy, Jahns demonstrated the presence of an erosional unconformity low in the nonmarine sequence which indicated a shift in source area. He redefined the beds below the unconformity as the Tick Canyon Formation (Jahns, 1940, pp. 163-66). Additional fossils discovered in the Tick Canyon Formation since Maxson's work, and certain of the forms described by Maxson, comprise the Tick Canyon fauna. Only two specimens described by Maxson are from the Tick Canyon Formation, UCMP 30046, the type of Miolabis californicus and UCMP 23852, a dentary fragment of a Parahippus. Neither of these permitted a definitive age determination. The additional fauna described by Jahns indicates an Arikareean mammalian age (early Miocene), and there is a noteworthy temporal hiatus between the Tick Canyon fauna and the over lying Mint Canyon fauna. In addition, faunas comprising three mammalian ages, late Barstovian, and earlier and late Clarendonian, are now recognized from the Mint Canyon Formation, but this is not the principal concern of this paper. -
From the Early Miocene of Southeastern Wyoming Robert M
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Papers in the Earth and Atmospheric Sciences Earth and Atmospheric Sciences, Department of 2002 New Amphicyonid Carnivorans (Mammalia, Daphoeninae) from the Early Miocene of Southeastern Wyoming Robert M. Hunt Jr. University of Nebraska-Lincoln, [email protected] Follow this and additional works at: https://digitalcommons.unl.edu/geosciencefacpub Part of the Earth Sciences Commons Hunt, Robert M. Jr., "New Amphicyonid Carnivorans (Mammalia, Daphoeninae) from the Early Miocene of Southeastern Wyoming" (2002). Papers in the Earth and Atmospheric Sciences. 546. https://digitalcommons.unl.edu/geosciencefacpub/546 This Article is brought to you for free and open access by the Earth and Atmospheric Sciences, Department of at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Papers in the Earth and Atmospheric Sciences by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. PUBLISHED BY THE AMERICAN MUSEUM OF NATURAL HISTORY CENTRAL PARK WEST AT 79TH STREET, NEW YORK, NY 10024 Number 3385, 41 pp., 28 ®gures, 4 tables December 27, 2002 New Amphicyonid Carnivorans (Mammalia, Daphoeninae) from the Early Miocene of Southeastern Wyoming ROBERT M. HUNT, JR.1 CONTENTS Abstract ....................................................................... 2 Introduction .................................................................... 2 Abbreviations ............................................................... -
Hyracodons and Subhyracodons Early Rhinoceros by Ryan C
The Fossils of the White River Badlands http://whiteriver.weebly.com/hyracodons.html Hyracodons and Subhyracodons Early rhinoceros by Ryan C. The discovery of rhinoceros in the Badlands of the American West was very exciting, most people never suspecting that such primitive forms of rhinoceros existed in North America. Today, living rhinoceroses consist of four genera that contain five species. Two are found in Africa; three others are restricted to Asia. Most are browsing animals but the largest species, the white rhinoceros of Africa, is a grazer. All living species possess "horns" that are composed of keratinized hair which decomposes at death and are not normally preserved in the fossil record. Although most New World rhinoceroses did not have horns, the widely distributed, males of the pig-sized Menoceros of the early Miocene had a lateral pair of horns. In North America, "rhinoceroses" of three similar lineages appeared from Asia during the Middle Eocene. Consisting of hippo-like Amynodontidae, "running rhinos" or Hyracodontidae, and true rhinoceroses, Rhinocerotidae, only true rhinoceroses adapted and diversified enough to survive into the early Pliocene. Amynodontids entered North America during the Bridgerian NALMA. Apparently adapted for a warm humid environment typified by lush forests, most amynodontids physically and ecologically resembled the hippopotamus of Africa. Remaining undiversified, only four genera are recognized and three of them contain but a single species. The massive and best known species is Metamynodon planifrons, a form characterized by having massive teeth with large tusks that give it the appearance of a hippopotamus. Some skeletons were 10 ft in length. Due to their skull structure, some believe this group supported a proboscis similar to that of a modern tapir. -
A NEW SABER-TOOTHED CAT from NEBRASKA Erwin H
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Conservation and Survey Division Natural Resources, School of 1915 A NEW SABER-TOOTHED CAT FROM NEBRASKA Erwin H. Barbour Nebraska Geological Survey Harold J. Cook Nebraska Geological Survey Follow this and additional works at: http://digitalcommons.unl.edu/conservationsurvey Part of the Geology Commons, Geomorphology Commons, Hydrology Commons, Paleontology Commons, Sedimentology Commons, Soil Science Commons, and the Stratigraphy Commons Barbour, Erwin H. and Cook, Harold J., "A NEW SABER-TOOTHED CAT FROM NEBRASKA" (1915). Conservation and Survey Division. 649. http://digitalcommons.unl.edu/conservationsurvey/649 This Article is brought to you for free and open access by the Natural Resources, School of at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Conservation and Survey Division by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. 36c NEBRASKA GEOLOGICAL SURVEY ERWIN HINCKLEY BARBOUR, State Geologist VOLUME 4 PART 17 A NEW SABER-TOOTHED CAT FROM NEBRASKA BY ERWIN H. BARBOUR AND HAROLD J. COOK GEOLOGICAL COLLECTIONS OF HON. CHARLES H. MORRILL 208 B A NEW SABER-TOOTHED CAT FROM NEBRASKA BY ERWIN H. BARBOUR AND HAROLD J, COOK During the field season of 1913, while exploring the Pliocene beds of Brown County, Mr. A. C. \Vhitford, a Fellow in the Department of Geology, University of Nebraska, discovered the mandible of a new mach.erodont cat. His work in this region was in the interest of the ~ebraska Geological Survey and the Morrill Geological Expeditions.1 The known fossil remains of the ancestral Felid.e fall into two nat ural lines of descent, as pointed out by Dr. -
South Dakota Line List: 04/03/2020 Beg Mile End Mile Tract Number Feature Use County Post Post ML-SD-HA-00020.000-ROW ROW Harding 285.69 286.08
South Dakota Line List: 04/03/2020 Beg Mile End Mile Tract Number Feature Use County Post Post ML-SD-HA-00020.000-ROW ROW Harding 285.69 286.08 ML-SD-HA-00030.000-ROW ROW Harding 286.08 286.31 ML-SD-HA-00050.000-ROW ROW Harding 286.31 286.39 ML-SD-HA-00040.000-ROW ROW Harding 286.39 286.91 ML-SD-HA-00055.000-ROW ROW Harding 286.91 287.25 ML-SD-HA-00060.000-ROW ROW Harding 287.25 287.32 ML-SD-HA-00080.000-ROW ROW Harding 287.32 288.57 ML-SD-HA-00100.000-ROW ROW Harding 288.57 288.83 ML-SD-HA-00090.000-ROW ROW Harding 288.57 288.68 ML-SD-HA-00130.000-ROW ROW Harding 288.83 289.42 ML-SD-HA-00120.000-ROW ROW Harding 289.42 289.50 ML-SD-HA-00110.000-ROW ROW Harding 289.50 290.01 ML-SD-HA-00160.000-ROW ROW Harding 290.01 290.44 ML-SD-HA-00200.000-ROW ROW Harding 290.44 290.60 ML-SD-HA-00210.000-ROW ROW Harding 290.60 291.18 ML-SD-HA-00230.000-ROW ROW Harding 291.18 292.32 ML-SD-HA-00260.000-ROW ROW Harding 292.32 292.52 ML-SD-HA-00290.000-ROW ROW Harding 292.52 292.88 ML-SD-HA-00295.000-ROW ROW Harding 292.88 293.45 ML-SD-HA-00320.000-ROW ROW Harding 293.45 294.50 ML-SD-HA-00330.000-ROW ROW Harding 294.00 294.33 ML-SD-HA-00350.000-ROW ROW Harding 294.50 294.62 ML-SD-HA-00390.000-ROW ROW Harding 294.62 295.08 ML-SD-HA-00410.000-ROW ROW Harding 295.12 295.21 ML-SD-HA-00420.000-ROW ROW Harding 295.21 295.78 ML-SD-HA-00460.000-ROW ROW Harding 295.78 296.39 ML-SD-HA-00470.000-ROW ROW Harding 296.39 296.43 ML-SD-HA-00510.000-ROW ROW Harding 296.43 297.12 ML-SD-HA-00530.000-ROW ROW Harding 297.12 298.26 ML-SD-HA-00570.000-ROW ROW Harding 298.26 298.56 -
Mammalia, Felidae, Canidae, and Mustelidae) from the Earliest Hemphillian Screw Bean Local Fauna, Big Bend National Park, Brewster County, Texas
Chapter 9 Carnivora (Mammalia, Felidae, Canidae, and Mustelidae) From the Earliest Hemphillian Screw Bean Local Fauna, Big Bend National Park, Brewster County, Texas MARGARET SKEELS STEVENS1 AND JAMES BOWIE STEVENS2 ABSTRACT The Screw Bean Local Fauna is the earliest Hemphillian fauna of the southwestern United States. The fossil remains occur in all parts of the informal Banta Shut-in formation, nowhere very fossiliferous. The formation is informally subdivided on the basis of stepwise ®ning and slowing deposition into Lower (least fossiliferous), Middle, and Red clay members, succeeded by the valley-®lling, Bench member (most fossiliferous). Identi®ed Carnivora include: cf. Pseudaelurus sp. and cf. Nimravides catocopis, medium and large extinct cats; Epicyon haydeni, large borophagine dog; Vulpes sp., small fox; cf. Eucyon sp., extinct primitive canine; Buisnictis chisoensis, n. sp., extinct skunk; and Martes sp., marten. B. chisoensis may be allied with Spilogale on the basis of mastoid specialization. Some of the Screw Bean taxa are late survivors of the Clarendonian Chronofauna, which extended through most or all of the early Hemphillian. The early early Hemphillian, late Miocene age attributed to the fauna is based on the Screw Bean assemblage postdating or- eodont and predating North American edentate occurrences, on lack of de®ning Hemphillian taxa, and on stage of evolution. INTRODUCTION southwestern North America, and ®ll a pa- leobiogeographic gap. In Trans-Pecos Texas NAMING AND IMPORTANCE OF THE SCREW and adjacent Chihuahua and Coahuila, Mex- BEAN LOCAL FAUNA: The name ``Screw Bean ico, they provide an age determination for Local Fauna,'' Banta Shut-in formation, postvolcanic (,18±20 Ma; Henry et al., Trans-Pecos Texas (®g. -
(Barbourofelinae, Nimravidae, Carnivora), from the Middle Miocene of China Suggests Barbourofelines Are Nimravids, Not Felids
UCLA UCLA Previously Published Works Title A new genus and species of sabretooth, Oriensmilus liupanensis (Barbourofelinae, Nimravidae, Carnivora), from the middle Miocene of China suggests barbourofelines are nimravids, not felids Permalink https://escholarship.org/uc/item/0g62362j Journal JOURNAL OF SYSTEMATIC PALAEONTOLOGY, 18(9) ISSN 1477-2019 Authors Wang, Xiaoming White, Stuart C Guan, Jian Publication Date 2020-05-02 DOI 10.1080/14772019.2019.1691066 Peer reviewed eScholarship.org Powered by the California Digital Library University of California Journal of Systematic Palaeontology ISSN: 1477-2019 (Print) 1478-0941 (Online) Journal homepage: https://www.tandfonline.com/loi/tjsp20 A new genus and species of sabretooth, Oriensmilus liupanensis (Barbourofelinae, Nimravidae, Carnivora), from the middle Miocene of China suggests barbourofelines are nimravids, not felids Xiaoming Wang, Stuart C. White & Jian Guan To cite this article: Xiaoming Wang, Stuart C. White & Jian Guan (2020): A new genus and species of sabretooth, Oriensmilusliupanensis (Barbourofelinae, Nimravidae, Carnivora), from the middle Miocene of China suggests barbourofelines are nimravids, not felids , Journal of Systematic Palaeontology, DOI: 10.1080/14772019.2019.1691066 To link to this article: https://doi.org/10.1080/14772019.2019.1691066 View supplementary material Published online: 08 Jan 2020. Submit your article to this journal View related articles View Crossmark data Full Terms & Conditions of access and use can be found at https://www.tandfonline.com/action/journalInformation?journalCode=tjsp20 Journal of Systematic Palaeontology, 2020 Vol. 0, No. 0, 1–21, http://dx.doi.org/10.1080/14772019.2019.1691066 A new genus and species of sabretooth, Oriensmilus liupanensis (Barbourofelinae, Nimravidae, Carnivora), from the middle Miocene of China suggests barbourofelines are nimravids, not felids a,bà c d Xiaoming Wang , Stuart C. -
“Toscas Del Río De La Plata” (Buenos Aires, Argentina)
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by El Servicio de Difusión de la Creación Intelectual Soibelzon et al.: Análisis faunístico de vertebrados deRev. las Mus. toscas Argentino del Río de Cienc. La Plata Nat., n.s.291 10(2): 291-308, 2008 Buenos Aires, ISSN 1514-5158 Análisis faunístico de vertebrados de las toscas del Río de La Plata (Buenos Aires, Argentina): un yacimiento paleontológico en desaparición E. SOIBELZON1, G. M. GASPARINI1, A. E. ZURITA2 & L. H. SOIBELZON1 1Departamento Científico de Paleontología de Vertebrados, Museo de La Plata, Facultad de Ciencias Naturales y Museo, UNLP. Paseo del Bosque s/n, 1900 La Plata. Argentina. CONICET. [email protected]. 2 Centro de Ecología Aplicada del Litoral (CECOAL-CONICET) y Universidad Nacional del Nordeste, Corrientes, Argentina Abstract: Faunistic analisys of vertebrates from las toscas del Río de La Plata (Buenos Aires, Argentina): a palaeontological site in disappearance. At the coast of the río de la Plata in the Buenos Aires city lies a classic paleontological site, known as toscas del Río de La Plata or simple as las toscas. It has been studied for over 120 years and, although it has been widely spread, today is only possible to observe it during low tide. For this reason, most of the available materials are those collected during the first half of the XXth century, and that so far have only been incorporated into scarce taxonomic reviews. Among the fossils collected in las toscas highlights Glyptodon munizi Ameghino, Neosclerocalyptus pseudornatus Ameghino, Mesotherium cristatum Serrés, Arctotherium angustidens Gervais y Ameghino and Theriodictis platensis (Mercerat); all are exclusive species from the Ensenadan Stage (early to -middle Pleistocene). -
United States
DEPARTMENT OF THE INTERIOR BULLETIN OF THE UNITED STATES ISTo. 146 WASHINGTON GOVERNMENT Pit IN TING OFFICE 189C UNITED STATES GEOLOGICAL SURVEY CHAKLES D. WALCOTT, DI11ECTOK BIBLIOGRAPHY AND INDEX NORTH AMEEICAN GEOLOGY, PALEONTOLOGY, PETEOLOGT, AND MINERALOGY THE YEA.R 1895 FEED BOUGHTON WEEKS WASHINGTON Cr O V E U N M K N T P K 1 N T I N G OFFICE 1890 CONTENTS. Page. Letter of trail smittal...... ....................... .......................... 7 Introduction.............'................................................... 9 List of publications examined............................................... 11 Classified key to tlio index .......................................... ........ 15 Bibliography ............................................................... 21 Index....................................................................... 89 LETTER OF TRANSMITTAL DEPARTMENT OF THE INTEEIOE, UNITED STATES GEOLOGICAL SURVEY, DIVISION OF GEOLOGY, Washington, D. 0., June 23, 1896. SIR: I have the honor to transmit herewith the manuscript of a Bibliography and Index of North American Geology, Paleontology, Petrology, and Mineralogy for the year 1895, and to request that it be published as a bulletin of the Survey. Very respectfully, F. B. WEEKS. Hon. CHARLES D. WALCOTT, Director United States Geological Survey. 1 BIBLIOGRAPHY AND INDEX OF NORTH AMERICAN GEOLOGY, PALEONTOLOGY, PETROLOGY, AND MINER ALOGY FOR THE YEAR 1895. By FRED BOUGHTON WEEKS. INTRODUCTION. The present work comprises a record of publications on North Ameri can geology, paleontology, petrology, and mineralogy for the year 1895. It is planned on the same lines as the previous bulletins (Nos. 130 and 135), excepting that abstracts appearing in regular periodicals have been omitted in this volume. Bibliography. The bibliography consists of full titles of separate papers, classified by authors, an abbreviated reference to the publica tion in which the paper is printed, and a brief summary of the con tents, each paper being numbered for index reference. -
Oglala Sioux Tribe and Oglala Lakota County Hazard Mitigation Plan
OGLALA SIOUX TRIBE AND OGLALA LAKOTA COUNTY HAZARD MITIGATION PLAN JUNE 2019 PLAN PREPARED BY JEO CONSULTING GROUP HAZARD MITIGATION PLANNING TEAM NAME TITLE Alva Good Crow --------------------------------- Porcupine Service Center Beth Perkins -------------------------------------- IHS Pine Ridge Hospital Public Health Nursing Director Darla Black ---------------------------------------- Oglala Lakota Nation Vice-President Delores George Pourier ------------------------ Oglala Lakota Nation Health Administration Donavan Steele ---------------------------------- Support Services Program Director Ed Silver ------------------------------------------- IHS Pine Ridge Hospital IT Supervisor Frank Maynard ----------------------------------- Oglala Lakota County, Fall River County Emergency Manager Frank Means -------------------------------------- Kyle Rural Water Hopa Haas ---------------------------------------- Indian Health Services Jackie Siers --------------------------------------- Wakpamni District Council Representative James Red Willow ------------------------------- Oglala Lakota Nation 5th Member Jeff Siscoe----------------------------------------- Bennett County Emergency Manager Jesse Big Crow ---------------------------------- OST District Emergency Management-Planning and Coordinating Specialist Jim Meeks ----------------------------------------- Eagle Nest District Council Representative Jim Poppen --------------------------------------- South Dakota State Hazard Mitigation Officer John Long -----------------------------------------