Multituberculate Mammals from the Wahweap
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Enamel Ultrastructure of Multituberculate Mammals: an Investigation of Variability
CO?JTRIBI!TIONS FROM THE MUSEUM OF PALEOK.1-OLOCiY THE UNIVERSITY OF MICHIGAN VOL. 27. NO. 1, p. 1-50 April I, 1985 ENAMEL ULTRASTRUCTURE OF MULTITUBERCULATE MAMMALS: AN INVESTIGATION OF VARIABILITY BY SANDRA J. CARLSON and DAVID W. KRAUSE MUSEUM OF PALEONTOLOGY THE UNIVERSITY OF MICHIGAN ANN ARBOR CONTRlBUTlONS FROM THE MUSEUM OF PALEON I OLOGY 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, 48109. VOLS. 11-XXVI. Parts of volumes may be obtained if available. Price lists available upon inquiry. CONTRIBUTIONS FROM THE MUSEUM OF PALEONTOLOGY THE UNIVERSITY OF MICHIGAN Vol . 27, no. 1, p. 1-50, pub1 ished April 1, 1985, Sandra J. Carlson and David W. Krause (Authors) ERRATA Page 11, Figure 4 caption, first line, should read "(1050X)," not "(750X)." ENAMEL ULTRASTRUCTURE OF MULTITUBERCULATE MAMMALS: AN INVESTIGATION OF VARIABILITY BY Sandra J. Carlsonl and David W. Krause' Abstract.-The nature and extent of enamel ultrastructural variation in mammals has not been thoroughly investigated. In this study we attempt to identify and evaluate the sources of variability in enamel ultrastructural patterns at a number of hierarchic levels within the extinct order Multituberculata. -
71St Annual Meeting Society of Vertebrate Paleontology Paris Las Vegas Las Vegas, Nevada, USA November 2 – 5, 2011 SESSION CONCURRENT SESSION CONCURRENT
ISSN 1937-2809 online Journal of Supplement to the November 2011 Vertebrate Paleontology Vertebrate Society of Vertebrate Paleontology Society of Vertebrate 71st Annual Meeting Paleontology Society of Vertebrate Las Vegas Paris Nevada, USA Las Vegas, November 2 – 5, 2011 Program and Abstracts Society of Vertebrate Paleontology 71st Annual Meeting Program and Abstracts COMMITTEE MEETING ROOM POSTER SESSION/ CONCURRENT CONCURRENT SESSION EXHIBITS SESSION COMMITTEE MEETING ROOMS AUCTION EVENT REGISTRATION, CONCURRENT MERCHANDISE SESSION LOUNGE, EDUCATION & OUTREACH SPEAKER READY COMMITTEE MEETING POSTER SESSION ROOM ROOM SOCIETY OF VERTEBRATE PALEONTOLOGY ABSTRACTS OF PAPERS SEVENTY-FIRST ANNUAL MEETING PARIS LAS VEGAS HOTEL LAS VEGAS, NV, USA NOVEMBER 2–5, 2011 HOST COMMITTEE Stephen Rowland, Co-Chair; Aubrey Bonde, Co-Chair; Joshua Bonde; David Elliott; Lee Hall; Jerry Harris; Andrew Milner; Eric Roberts EXECUTIVE COMMITTEE Philip Currie, President; Blaire Van Valkenburgh, Past President; Catherine Forster, Vice President; Christopher Bell, Secretary; Ted Vlamis, Treasurer; Julia Clarke, Member at Large; Kristina Curry Rogers, Member at Large; Lars Werdelin, Member at Large SYMPOSIUM CONVENORS Roger B.J. Benson, Richard J. Butler, Nadia B. Fröbisch, Hans C.E. Larsson, Mark A. Loewen, Philip D. Mannion, Jim I. Mead, Eric M. Roberts, Scott D. Sampson, Eric D. Scott, Kathleen Springer PROGRAM COMMITTEE Jonathan Bloch, Co-Chair; Anjali Goswami, Co-Chair; Jason Anderson; Paul Barrett; Brian Beatty; Kerin Claeson; Kristina Curry Rogers; Ted Daeschler; David Evans; David Fox; Nadia B. Fröbisch; Christian Kammerer; Johannes Müller; Emily Rayfield; William Sanders; Bruce Shockey; Mary Silcox; Michelle Stocker; Rebecca Terry November 2011—PROGRAM AND ABSTRACTS 1 Members and Friends of the Society of Vertebrate Paleontology, The Host Committee cordially welcomes you to the 71st Annual Meeting of the Society of Vertebrate Paleontology in Las Vegas. -
Lhiwanj[Fuseum
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by American Museum of Natural History Scientific... >lhiwanJ[fuseum PUBLISHED BY THE AMERICAN MUSEUM OF NATURAL HISTORY CENTRAL PARK WEST AT 79TH STREET, NEW YORK 24, N.Y. NUMBER 2 2 26 AUGUST I7, I 965 First Evidence of Tooth Replacement in the Subclass Allotheria (Mammalia) BY FREDERICK S. SZALAY1 INTRODUCTION Multituberculates (the only known order of the subclass Allotheria) are abundantly represented in Mesozoic and Paleocene mammal locali- ties. Of the relatively large number of multituberculate mandibles and maxillae known up to the summer of 1963, not one showed a tooth in the process of replacement. Young specimens were known with less fully erupted teeth (Jepsen, 1940, p. 245; Clemens, 1963, p. 34), but it has not been possible before to demonstrate diphyodonty in multituberculates. With a now-standardized washing technique used for obtaining ver- tebrate microfossils (Hibbard, 1949; McKenna, 1962), a vertebrate paleontology field party of the American Museum of Natural History collected a large assemblage of vertebrate fossils during the summer of 1963. The collection was of approximately Torrejonian age from the eastern part of the Washakie Basin in southern Wyoming.2 Among the large number of multituberculates represented, a fragmentary left man- dible (A.M.N.H. No. 83003) is one of the two specimens described in the present paper that supply the first direct evidence of allotherian tooth replacement. The deciduous lower incisor is still present in the mandible, 1 Department of Zoology, Columbia University, New York, New York. -
Vertebrate Paleontology of the Cretaceous/Tertiary Transition of Big Bend National Park, Texas (Lancian, Puercan, Mammalia, Dinosauria, Paleomagnetism)
Louisiana State University LSU Digital Commons LSU Historical Dissertations and Theses Graduate School 1986 Vertebrate Paleontology of the Cretaceous/Tertiary Transition of Big Bend National Park, Texas (Lancian, Puercan, Mammalia, Dinosauria, Paleomagnetism). Barbara R. Standhardt Louisiana State University and Agricultural & Mechanical College Follow this and additional works at: https://digitalcommons.lsu.edu/gradschool_disstheses Recommended Citation Standhardt, Barbara R., "Vertebrate Paleontology of the Cretaceous/Tertiary Transition of Big Bend National Park, Texas (Lancian, Puercan, Mammalia, Dinosauria, Paleomagnetism)." (1986). LSU Historical Dissertations and Theses. 4209. https://digitalcommons.lsu.edu/gradschool_disstheses/4209 This Dissertation is brought to you for free and open access by the Graduate School at LSU Digital Commons. It has been accepted for inclusion in LSU Historical Dissertations and Theses by an authorized administrator of LSU Digital Commons. For more information, please contact [email protected]. INFORMATION TO USERS This reproduction was made from a copy of a manuscript sent to us for publication and microfilming. While the most advanced technology has been used to pho tograph and reproduce this manuscript, the quality of the reproduction is heavily dependent upon the quality of the material submitted. Pages in any manuscript may have indistinct print. In all cases the best available copy has been filmed. The following explanation of techniques is provided to help clarify notations which may appear on this reproduction. 1. Manuscripts may not always be complete. When it is not possible to obtain missing pages, a note appears to indicate this. 2. When copyrighted materials are removed from the manuscript, a note ap pears to indicate this. 3. -
Multituberculate Mammals from the Cretaceous of Uzbekistan
Multituberculate mammals from the Cretaceous of Uzbekistan ZOFIA KIELAN- JAWOROWSKA and LEV A. NESSOV Kielan-Jaworowska, 2. & Nessov, L. A. 1992. Multituberculate mammals from the Cretaceous of Uzbelustan. Acta Palaeontologica Polonica 37, 1, 1- 17. The first western Asian multituberculates found in the Bissekty Formation (Co- niacian) of Uzbekistan are described on the basis of a lower premolar (p4), a fragment of a lower incisor, an edentulous dentary, a proximal part of the humerus and a proximal part of the femur. Uzbekbaatar kizylkumensis gen. et sp. n. is defined as having a low and arcuate p4. possibly without a posterobuccal cusp; it presumably had two lower premolars, as inferred from the presence of a triangular concavity at the upper part of the anterior wall of p4, and p3 less reduced in relation to p4 than in non-specialized Taeniolabidoidea and Ptilodontoidea. Uzbek- baatar is placed in the Cimolodonta without indicating family and infraorder. It might have originated from the Plagiaulacinae or Eobaatarinae. Key words : Multituberculata, Marnmalia, Cretaceous, Coniacian, Uzbekistan. Zofia Kielan-Jaworowska. Paleontologisk Museum, Universitetet i Oslo, Sars Gate 1, N-0562 Oslo, Norway. flec A. Hecoc, kf~cmumym3exnoiL Kopbl, Ca~~m-nemep6ypzc~uiiYnueepcumem, 199 034 Ca~~m-l7emep6ypz,Poccun (Lev A. Nessov, Institute of the Earth Crust, Sankt-Peters- burg University, 199 034 St. Petersburg. Russla]. Introduction The Multituberculata is the first mammalian order to have adapted to herbivorous niches, although many may have been omnivorous (Krause 1982). Known from the Late Triassic to the Early Oligocene (Hahn & Hahn 1983), this order of mammals was dominant throughout the Mesozoic in most of the local faunas studied. -
Masticatory Musculature of Asian Taeniolabidoid Multituberculate Mammals
Masticatory musculature of Asian taeniolabidoid multituberculate mammals PETR P. GAMBARYAN & ZOFIA KIELAN-JAWOROWSKA* Gambaryan, P.P. & Kielan-Jaworowska, 2. 1995. Masticatory musculature of Asian taeniolabidoid multituberculate mammals. Acta Palaeontologica Polonica 40, 1, 45-108. The backward chewing stroke in multituberculates (unique for mammals) resulted in a more anterior insertion of the masticatory muscles than in any other mammal group, including rodents. Multituberculates differ from tritylodontids in details of the masticatory musculature, but share with them the backward masticatory power stroke and retractory horizontal components of the resultant force of all the masticatory muscles (protractory in Theria). The Taeniolabididae differ from the Eucosmodontidae in having a more powerful masticatory musculature, expressed by the higher zygomatic arch with relatively larger anterior and middle zygomatic ridges and higher coronoid process. It is speculated that the bicuspid, or pointed upper incisors, and semi-procumbent, pointed lower ones, characteristic of non- taeniolabidoid mdtitliberculates were used for picking-up and killing insects or other prey. In relation to the backward power stroke the low position of the condylar process was advantageous for most multituberculates. In extreme cases (Sloanbaataridae and Taeniolabididae), the adaptation for crushing hard seeds, worked against the benefit of the low position of the condylar process and a high condylar process developed. Five new multituberculate autapomorphies are rec- ognized: anterior and intermediate zygomatic ridges: glenoid fossa large, flat and sloping backwards (forwards in rodents), arranged anterolateral and standing out from the braincase; semicircular posterior margin of the dentary with condylar process forming at least a part of it; anterior position of the coronoid process; and anterior position of the masseteric fossa. -
New Specimens of the Multituberculate Mammal Sphenopsalis from China: Implications for Phylogeny and Biology of Taeniolabidoids
New specimens of the multituberculate mammal Sphenopsalis from China: Implications for phylogeny and biology of taeniolabidoids FANG-YUAN MAO, YUAN-QING WANG, and JIN MENG Mao, F.-Y., Wang, Y.-Q., and Meng, J. 2016. New specimens of the multituberculate mammal Sphenopsalis from China: Implications for phylogeny and biology of taeniolabidoids. Acta Palaeontologica Polonica 61 (2): 429–454. Multituberculates are the most diverse and best known group of Mesozoic mammals; they also persisted into the Paleogene and became extinct in the Eocene, possibly outcompeted by rodents that have similar morphological and pre- sumably ecological adaptations. Among the Paleogene multituberculates, those that have the largest body sizes belong to taeniolabidoids, which contain several derived species from North America and Asia and some species with uncertain taxonomic positions. Of the known taeniolabidoids, the poorest known taxon is Sphenopsalis nobilis from Mongolia and Inner Mongolia, China, represented previously by a few isolated teeth. Its relationship with other multituberculates thus has remained unclear. Here we report new specimens of Sphenopsalis nobilis collected from the upper Paleocene of the Erlian Basin, Inner Mongolia, China, during a multi-year field effort beginning in 2000. These new specimens document substantial parts of the dental, partial cranial and postcranial morphologies of Sphenopsalis, including the upper and lower incisors, partial premolars, complete upper and lower molars, a partial rostrum, fragments of the skull roof, middle ear cavity, a partial scapula, and partial limb bones. With the new specimens we are able to present a detailed description of Sphenopsalis, comparisons among relevant taeniolabidoids, and brief phylogenetic analyses based on a dataset consisting of 43 taxa and 102 characters. -
Late Cretaceous Stratigraphy and Vertebrate Faunas of the Markagunt, Paunsaugunt, and Kaiparowits Plateaus, Southern Utah
GEOLOGY OF THE INTERMOUNTAIN WEST an open-access journal of the Utah Geological Association Volume 3 2016 LATE CRETACEOUS STRATIGRAPHY AND VERTEBRATE FAUNAS OF THE MARKAGUNT, PAUNSAUGUNT, AND KAIPAROWITS PLATEAUS, SOUTHERN UTAH Alan L. Titus, Jeffrey G. Eaton, and Joseph Sertich A Field Guide Prepared For SOCIETY OF VERTEBRATE PALEONTOLOGY Annual Meeting, October 26 – 29, 2016 Grand America Hotel Salt Lake City, Utah, USA Post-Meeting Field Trip October 30–November 1, 2016 © 2016 Utah Geological Association. All rights reserved. For permission to copy and distribute, see the following page or visit the UGA website at www.utahgeology.org for information. Email inquiries to [email protected]. GEOLOGY OF THE INTERMOUNTAIN WEST an open-access journal of the Utah Geological Association Volume 3 2016 Editors UGA Board Douglas A. Sprinkel Thomas C. Chidsey, Jr. 2016 President Bill Loughlin [email protected] 435.649.4005 Utah Geological Survey Utah Geological Survey 2016 President-Elect Paul Inkenbrandt [email protected] 801.537.3361 801.391.1977 801.537.3364 2016 Program Chair Andrew Rupke [email protected] 801.537.3366 [email protected] [email protected] 2016 Treasurer Robert Ressetar [email protected] 801.949.3312 2016 Secretary Tom Nicolaysen [email protected] 801.538.5360 Bart J. Kowallis Steven Schamel 2016 Past-President Jason Blake [email protected] 435.658.3423 Brigham Young University GeoX Consulting, Inc. 801.422.2467 801.583-1146 UGA Committees [email protected] [email protected] Education/Scholarship -
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Ortiz-Jaureguizar, E. and Pascual, R. , 2011. The tectonic setting of the Caribbean region and the K/T turnover of the South American land-mammal fauna . Boletín Geológico y Minero, 122 (3): 333-344 ISSN: 0366-0176 The tectonic setting of the Caribbean region and the K/T turnover of the South American land-mammal fauna E. Ortiz-Jaureguizar (1) and R. Pascual (2) (1) LASBE (Laboratorio de Sistemática y Biología Evolutiva), Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Paseo del Bosque s/n, B1900FWA La Plata, Argentina. [email protected] (2) División Paleontología Vertebrados, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Paseo del Bosque s/n, B1900FWA La Plata, Argentina. [email protected] ABSTRACT According to the fossil record, a biotic interchange of land vertebrates ( e.g. booid snakes, dinosaurs and mammals) occurred between the Americas during the Late Cretaceous-Early Palaeocene. The arrival of North American immigrants (particularly marsupials and placentals) during the latest Cretaceous-earliest Palaeocene had a profound influence on the composition of the South American mammal commu - nities. During the Late Cretaceous these communities were dominated by native groups of Pangeic lineages, which represented more than 95% of the known genera, but during the Early Palaeocene 70% of South American mammals were derived from North American immi - grants that had arrived during the Late Cretaceous-earliest Palaeocene, and by the Late Palaeocene all the South American mammals (with the possible exception of the xenarthrans) were descendants of these North American immigrants. In spite of the fact that no geological evidence is currently available to support the existence of a continuous land connection between the Americas during the Late Cretaceous- early Palaeocene, the fossil record is substantial enough to point to a temporary inter-American connection that permitted the beginning of a land-mammal exchange by the end of the Cretaceous. -
Late Cretaceous (65-100 Ma Time-Slice) Time
Late Cretaceous (65-100 Ma time-slice) Time ScaLe R Creator CHRONOS Cen Mesozoic Paleozoic Updated by James G. Ogg (Purdue University) and Gabi Ogg to: GEOLOGIC TIME SCALE 2004 (Gradstein, F.M., Ogg, J.G., Smith, A.G., et al., 2004) and The CONCISE GEOLOGIC TIME SCALE (Ogg, J.G., Ogg, G., and Gradstein, F.M., 2008) Sponsored, in part, by: Precambrian ICS Based, in part, on: CENOZOIC-MESOZOIC BIOCHRONOSTRATIGRAPHY: JAN HARDENBOL, JACQUES THIERRY, MARTIN B. FARLEY, THIERRY JACQUIN, PIERRE-CHARLES DE GRACIANSKY, AND PETER R. VAIL,1998. Mesozoic and Cenozoic Sequence Chronostratigraphic Framework of European Basins in: De Graciansky, P.- C., Hardenbol, J., Jacquin, Th., Vail, P. R., and Farley, M. B., eds.; Mesozoic and Cenozoic Sequence Stratigraphy of European Basins, SEPM Special Publication 60. Standard Geo- Ammonites Sequences Planktonic Foraminifers Smaller Benthic Foraminifers Larger Benthic Foraminifers Calcareous Nannofossils Dinoflagellate Cysts Radiolarians Belemnites Inoceramids Rudists Ostracodes Charophytes Mammals Stage Age Chronostratigraphy magnetic North Atlantic Tethys Age Western Interior, Sequences T-R Major T-R Other Larger Benthic Russian Central Europe / Period Epoch Stage Substage Polarity Boreal Tethyan North America Global Cycles Cycles Zones Zonal Markers Other Foraminifers Boreal Zonal Markers Other Boreal Foraminifers Tethys Zones Zonal Markers Foraminifers Zones Zonal Markers Other Nannofossils Zones Zonal Markers Other Dinocysts Zones Zonal Markers Other Tethyan Dinocysts Zones Zonal Markers NW Europe Balto-Scandia -
Mammalian Distal Humerus Fossils from Eastern Montana, USA with Implications for the Cretaceous-Paleogene Mass Extinction and the Adaptive Radiation of Placentals
Palaeontologia Electronica palaeo-electronica.org Mammalian distal humerus fossils from eastern Montana, USA with implications for the Cretaceous-Paleogene mass extinction and the adaptive radiation of placentals Lauren B. DeBey and Gregory P. Wilson ABSTRACT Postcrania of Cretaceous-Paleogene (K-Pg) mammals offer insights into richness, body size, and locomotor ecology that supplement patterns from well-sampled dental assemblages. Here, we describe and morphotype 50 distal humeri from Lancian–Puer- can assemblages of eastern Montana. Using geometric morphometric analysis of a taxonomically broad sample of humeri from extant small-bodied therians of diverse locomotor modes, we constrain locomotor inferences of some morphotypes. We use this database to preliminarily assess body-size and locomotor diversity across the K- Pg boundary. The seven Lancian humerus morphotypes include the multituberculates ?Mesodma sp., ?Cimolodon nitidus, and ?Meniscoessus robustus and the metatherian ?Didelphodon vorax. Morphotype richness decreased to four or five across the K-Pg boundary and rebounded in the late Puercan to six, mostly eutherian, morphotypes. Puercan morphotypes include the multituberculate ?Stygimys kuszmauli, the “plesi- adapiform” primate ?Purgatorius, small and large archaic ungulates, a possible palaeo- ryctid, and a very large eutherian. Humerus size data imply a decrease in body size across the K-Pg boundary, followed by an increase by the late Puercan, a trend consis- tent with the dental fossil record. Geometric morphometrics analysis and functional morphology imply greater locomotor diversity among K-Pg mammals than previously recognized: we infer that most Lancian and Puercan multituberculates were arboreal; the Lancian eutherian was arboreal or semifossorial; the early Puercan palaeoryctid was semifossorial and the small archaic ungulate was terrestrial; and the late Puercan “plesiadapiform” primate was arboreal and the large archaic ungulate was scansorial. -
Mammals Across the K/Pg Boundary in Northeastern
Mammals across the K/Pg boundary in northeastern Montana, U.S.A.: dental morphology and body-size patterns reveal extinction selectivity and immigrant-fueled ecospace filling Author(s): Gregory P. Wilson Source: Paleobiology, 39(3):429-469. 2013. Published By: The Paleontological Society DOI: http://dx.doi.org/10.1666/12041 URL: http://www.bioone.org/doi/full/10.1666/12041 BioOne (www.bioone.org) is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Web site, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/page/ terms_of_use. Usage of BioOne content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. Paleobiology, 39(3), 2013, pp. 429–469 DOI: 10.1666/12041 Mammals across the K/Pg boundary in northeastern Montana, U.S.A.: dental morphology and body-size patterns reveal extinction selectivity and immigrant-fueled ecospace filling Gregory P. Wilson Abstract.—The Cretaceous/Tertiary (K/Pg) mass extinction has long been viewed as a pivotal event in mammalian evolutionary history, in which the extinction of non-avian dinosaurs allowed mammals to rapidly expand from small-bodied, generalized insectivores to a wide array of body sizes and ecological specializations.