A new tribe of castoroidine beavers from the late Arikareean to Hemphillian (Oligocene–Miocene) of western North America

• Języki publikacji: EN

Abstrakty

EN

Two genera of Miocene beavers (Castoridae), Hystricops and Priusaulax are referred to a new tribe Hystricopini of the subfamily of giant beavers, Castoroidinae based on cranial and dental morphologies. Previously undescribed and more complete specimens of Hystricops demonstrate that it is referable to the Castoroidinae rather than the Castorinae. Along with Priusaulax, it is believed to represent a group of basal castoroidines, distinct from later Castoroidinae by the retention of the primitive morphology of the contact of the lacrimal bone with the jugal on the cranium, as well as more primitive dental morphologies (lower crown-height and simple occlusal pattern of cheek teeth). A partial cranium and several isolated teeth from the Hemingfordian of Colorado, originally referred to Anchitheriomys?, are referred here to a new species, Priusaulax wilsoni sp. nov. Monosaulax senrudi from the Barstovian of Montana is also referred to Priusaulax. Hystricops is limited to the type species H. venustus from the Clarendonian and Barstovian North American Land Mammal Age (NALMA), and H. browni from the Hemphillian NALMA.

Słowa kluczowe

EN

North America; Colorado; Oligocene; Miocene; Arikareenan; Hemphillian; Mammalia; Rodentia; Castoridae; Castoroidinae; beaver; cranial anatomy; dental morphology; paleontology; paleozoology

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 2017
• Tom: 62
• Numer: 2
• Opis fizyczny: p.249-258,fig.,ref.

Twórcy

Bibliografia

• Allen, J.A. 1877. Castoroididae. In: E. Coues and J.A. Allen (eds.), Monographs of North American Roentia. United States Geological Survey of the Territories, 415–442, Government Printing Office, Washington, DC.
• Bowen, R.G., Gray, W.L., and Gregory, D.C. 1963. General geology of the northern Juntura Basin. Transactions of the American Philosophical Society 53: 22–34.
• Cassilliano, M. 1980. Stratigraphy and vertebrate paleontology of the Horse Creek–Trail Creek area, Laramie County, Wyoming. University of Wyoming Contributions to Geology 19: 25–68.
• Flynn, L.J. and Jacobs, L.L. 2008. Castoroidea. In: C.M. Janis, G.F. Gunnell, and M.D. Uhen (eds.), Evolution of Tertiary Mammals of North America. Volume 2: Small Mammals, Xenarthrans, and Marine Mammals, 391–405. Cambridge University Press, New York.
• Hay, O.P. 1902. Bibliography and catalogue of the fossil Vertebrata of North America. Bulletin of the U.S. Geological Survey 179: 1–868.
• Hemprich, W. 1820. Grundriss der Naturgeschichte für höhere Lehranstal ten, Entworfen von Dr. W. Hemphrich. 432 pp. August Rucker, Berlin.
• Holman, J.A. 1977. Upper Miocene snakes (Reptilia, Serpentes) from southeastern Nebraska. Journal of Herpetology 11: 323–335.
• Janis, C.M., Gunnell, G.F., and Uhen, M.D. 2008. Introduction. In: C.M. Janis, G.F. Gunnell, and M.D. Uhen (eds.), Evolution of Tertiary Mammals of North America. Volume 2: Small Mammal, Xenarthrans, and Marine Mammals, 1–6. Cambridge University Press, New York.
• Korth, W.W. 1994. The Tertiary Record of Rodents in North America. 319 pp. Plenum Press, New York.
• Korth, W.W. 1997. Additional rodents (Mammalia) from the Clarendonian (Miocene) of northcentral Nebraska and a review of Clarendonian rodent biostratigraphy of that area. Paludicola 1: 97–111.
• Korth, W.W. 1998a. A new beaver (Rodentia, Castoridae) from the Orellan (Oligocene) of North Dakota. Paludicola 1: 127–131.
• Korth, W.W. 1998b. Rodents and lagomorphs (Mammalia) from the late Clarendonian (Miocene), Ash Hollow Formation, Brown County, Nebraska. Annals of Carnegie Museum 67: 299–348.
• Korth, W.W. 2001a. A new species of Anchitheriomys (Rodentia, Castoridae) and a review of the anchitheriomyine beavers from North America. Paludicola 3: 51–55.
• Korth, W.W. 2001b. Comments on the systematics and classification of the beavers (Rodentia, Castoridae). Journal of Mammalian Evolution 8: 279–296.
• Korth, W.W. 2002. Review of the castoroidine beavers (Rodentia, Castoridae) from the Clarendonian (Miocene) of northcentral Nebraska. Paludicola 4: 15–24.
• Korth, W.W. 2007. The skull of Nothodipoides (Castoridae, Rodentia) and the occurrence of fossorial adaptations in beavers. Journal of Paleontology 81: 1542–1546.
• Korth, W.W. 2008. Cranial morphology, systematic, and succession of beavers (Rodentia, Castoridae) from the middle Miocene (late Barstovian–early Clarendonian) Valentine Formation of Nebraska, USA. Acta Palaeonotologica Polonica 53: 169–182.
• Korth, W.W. and Bailey, B.E. 2006. Earliest castoroidine beaver (Rodentia, Castoridae) from the late Arikareean (early Miocene) of Nebraska. Annals of Carnegie Museum 75: 237–245.
• Korth W.W. and Emry, R.J. 1997. The skull of Anchitheriomys and a new subfamily of beavers (Castoridae, Rodentia). Journal of Paleontology 71: 343–347.
• Leidy, J. 1858. Notice of remains of extinct Vertebrata from the valley of the Niobrara River, collected during the exploring expedition of 1857, in Nebraska, uner the command of Lieut. G.K. Warren, U.S. Topographic Engineer, by Dr. V.F. Hayden. Proceedings of the Academy of Natural Sciences, Philadelphia 1858: 20–29.
• Linneaus, C. 1758. Systema naturae per regna tria naturae, secundum class, ordines, genera, species cum characteribus, differentiis, synonymis, locis. 823 pp. Laurentii Salvii, Stockholm.
• Matthew, W.D. 1902. A horned rodent from the Colorado Miocene, with a revision of the Mylagauli, beavers, and hares of the American Tertiary. Bulletin of the American Museum of Natural History 16: 291–310.
• McKenna, M.C. and Bell, S.K. 1998. Classification of Mammals above the Species Level. 631 pp. Columbia University Press, New York.
• Mörs, T. and Hulbert, R.C., Jr. 2010. Anchitheriomys Roger, 1898 or Amblycastor Matthew, 1918 (Rodentia, Castoridae)? Taxonomic implications of a mandible from the Miocene of Florida. Journal of Vertebrate Paleontology 30: 1899–1902.
• Roger, O. 1898. Wirbeltierreste aus dem Dinotheriensande der bayerischschwäbischen Hochebene. Bericht des Naturwissenschaftlichen Vereins für Schwaben und Neuburg 33: 1–46.
• Rybczynski, N. 2007. Castorid phylogenetics: implications for the evolution of swimming and tree-exploitation in beavers. Journal of Mammalian Evolution 14: 1–35.
• Shotwell, J.A. 1963. Pliocene mammalian communities of the Juntura Basin. Transactions of the American Philosophical Society 53: 7–21.
• Shotwell, J.A. and Russell, D.E. 1963. Mammalian fauna of the Upper Juntura Formation, the Black Butte local fauna. Transactions of the American Philosophical Society 53: 42–77.
• Skinner, M.F. and Johnson, F.W. 1984. Tertiary stratigraphy and the Frick Collection of fossil vertebrates from north-central Nebraska. Bulletin of the American Museum of Natural History 178: 215–368.
• Stout, T.M. and Stone, W.J. 1971. Fossil beavers in Tertiary caprocks in North Dakota and Montana. Geological Society of America, Abstracts 281–282. Third Annual Meeting of the Northcentral Section of the Geological Society of America.
• Stirton, R. A. 1935. A review of the Tertiary beavers. University of California Publications, Geological Sciences 23: 391–458.
• Voorhies, M.R. 1990. Vertebrate paleontology of the proposed Norden Reservoir area, Brown, Cherry, and Keya Paha counties, Nebraska. Technical Report 82-09. 731 pp. Division of Archeological Research, University of Nebraska, Lincoln.
• Wahlert, J.H. 1977. Cranial foramina and relationships of Eutypomys (Rodentia, Eutypomyidae). American Museum Novitates 2626: 1–8.
• Wilson, R.W. 1960. Early Miocene rodents and insectivores from northeastern Colorado. University of Kansas Paleontological Contributions, Vertebrata 7: 1–92.
• Wood, H.E. 1945. Late Miocene beaver from sourtheastern Montana. American Museum Novitates 1299: 1–6.

Identyfikatory

DOI

10.4202/app.00339.2017