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Marsupials (Mammalia, Metatheria) from the Brule Formation (Whitneyan, Oligocene) North Dakota

Published online by Cambridge University Press:  03 July 2020

William W. Korth Open the ORCID record for William W. Korth [Opens in a new window] ,
Clint A. Boyd ,
Robert J. Emry  and
Jeff J. Person
William W. Korth*
Affiliation:
Rochester Institute of Vertebrate Paleontology, 265 Carling Rd., Rochester, NY14610 Rochester Museum & Science Center, 657 East Ave., Rochester, NY14607
Clint A. Boyd
Affiliation:
North Dakota Geological Survey, 600 East Boulevard Ave., Bismarck, ND58505
Robert J. Emry
Affiliation:
Department of Paleobiology, Smithsonian Institution, National Museum of Natural History, PO Box 37012 MRC 121, Washington, DC20013
Jeff J. Person
Affiliation:
North Dakota Geological Survey, 600 East Boulevard Ave., Bismarck, ND58505
*
*Corresponding author
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Abstract

Five marsupial species are recognized from the Brule Formation at two localities in southwestern North Dakota: Fitterer Ranch and Obritsch Ranch (middle Oligocene; Whitneyan North American Land Mammal Age [NALMA]). The herpetotheriids Herpetotherium fugax Cope, 1873a, Copedelphys superstes new species, and the peradectid Nanodelphys hunti (Cope, 1873b) are represented at both localities. A fourth species is H. sp., cf. H. merriami (Stock and Furlong, 1922), represented by a single specimen from Fitterer Ranch, being limited elsewhere to the later Arikareean NALMA. A fifth species is represented by two isolated lower cheek teeth, interpreted as m1s, from Fitterer Ranch that are unique in lacking a trigonid (only two cusps present) while having a well-developed talonid. These specimens are referred to an indeterminate herpetotheriine species. The new species of Copedelphys is distinct from other species of the genus in that the anterior two lower molars are enlarged relative to the posterior molars. Overall, this new species is more similar in proportions to the latest Eocene (Chadronian) C. titanelix (Matthew, 1903) than the Oligocene (Orellan and Whitneyan) C. stevensoni (Cope, 1873b). This study adds a third and fourth Whitneyan marsupial fauna from the Great Plains region of North America, increases the known diversity of Whitneyan marsupials, and provides further evidence that marsupial diversity during the late Paleogene in North America was relatively stable until the late early Arikareean NALMA.

UUID: http://zoobank.org/b8534802-b9ed-4120-baca-fc72917f7d6a

Type
Articles
Information
Journal of Paleontology , Volume 95 , Issue 1 , January 2021 , pp. 193 - 204
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Copyright
Copyright © 2020, The Paleontological Society

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References

Cope, E.D., 1873a, Third notice of extinct Vertebrata from the Tertiary of the Plains: Paleontological Bulletin, v. 16, p. 1–8.Google Scholar
Cope, E.D., 1873b, Synopsis of new Vertebrata from the Tertiary of Colorado, obtained during the summer of 1873: Government Printing Office, Washington, D.C., 19 p. [Reprinted in U.S. Geological and Geographical Survey of Colorado, F.V. Hayden, v. 1873, p. 427–532.]10.3133/70039707CrossRefGoogle Scholar
Crochet, J.-Y., 1979, Diversité systématique des Didelphidae (Marsupialia) eoropéens Tertiaries: Géobios, v. 12, p. 365–378.10.1016/S0016-6995(79)80117-5CrossRefGoogle Scholar
Emry, R.J. and Korth, W.W., 2007, A new genus of squirrel (Rodenita, Sciuridae) form the mid-Cenozoic of North America: Journal of Vertebrate Paleontology, v. 27, p. 693–698.10.1671/0272-4634(2007)27[693:ANGOSR]2.0.CO;2CrossRefGoogle Scholar
Fox, R.C., 1983, Notes on the North American Tertiary marsupials Herpetotherium and Peradectes: Canadian Journal of Earth Sciences, v. 20, p. 1565–1578.10.1139/e83-146CrossRefGoogle Scholar
Hayes, F.G., 2005, Arikareean (Oligocene–Miocene) Herpetotherium (Marsupialia, Didelphidae) from Nebraska and Florida: Bulletin of the Florida Museum of Natural History, v. 45, p. 341–360.Google Scholar
Korth, W.W., 1994, Middle Tertiary marsupials (Mammalia) from North America: Journal of Paleontology, v. 68, p. 376–397.10.1017/S0022336000022952CrossRefGoogle Scholar
Korth, W.W., 2008, Marsupialia, in Janis, C.M., Scott, K.M., and Jacobs, L.L., eds., Evolution of Tertiary Mammals of North America, vol. 2: Cambridge, Cambridge University Press, p. 39–48.10.1017/CBO9780511541438.004CrossRefGoogle Scholar
Korth, W.W., 2010, Mammals from the Blue Ash local fauna (late Oligocene), South Dakota. Rodentia, Part 6: Family Castoridae and additional Eomyidae with a summary of the complete rodent fauna: Paludicola, v. 8, p. 8–13.Google Scholar
Korth, W.W., 2015, Mammals from the Blue Ash local fauna (late Oligocene), South Dakota. Additional specimens of Herpetotherium Cope (Marsupialia, Didelphidae): Paludicola, v. 10, p. 113–118.Google Scholar
Korth, W.W., 2018, Review of the marsupials (Mammalia: Metatheria) from the late Paleogene (Chadronian–Arikareean: late Eocene–late Oligocene) of North America: Paläontologische Zeitschrift, v. 92, p. 499–523.10.1007/s12542-017-0396-yCrossRefGoogle Scholar
Korth, W.W., and Cavin, J., 2016, New material of the marsupial (Mammalia, Metatheria) Herpetotherium merriami (Stock and Furlong, 1922) from the John Day Formation, late Oligocene, Oregon, USA: Journal of Paleontology, v. 90, p. 1225–1232.10.1017/jpa.2016.117CrossRefGoogle Scholar
Korth, W.W., Emry, R.J., Boyd, C.A., and Person, J.J., 2019a, Rodents (Mammalia) from Fitterer Ranch, Brule Formation (Oligocene), North Dakota: Smithsonian Contributions to Paleobiology, v. 103, p. 1–45.Google Scholar
Korth, W.W., Boyd, C.A., and Person, J.J., 2019b, Whitneyan (middle Oligocene) rodents from Obritsch Ranch (Stark County, North Dakota) and a review of Whitneyan rodent fossil record: Annals of the Carnegie Museum, v. 85, p. 249–278.10.2992/007.085.0304CrossRefGoogle Scholar
Matthew, W.D., 1903, The fauna of the Titanotherium Beds at Pipestone Springs, Montana: Bulletin of the American Museum of Natural History, v. 19, p. 197–226.Google Scholar
McGrew, P.O., 1937, New marsupials from the Tertiary of Nebraska: Journal of Geology, v. 45, p. 448–455.10.1086/624552CrossRefGoogle Scholar
McGrew, P.O., 1939, Nanodelphys, an Oligocene didelphine: Field Museum of Natural History, Geological Series, v. 6, p. 393–400.Google Scholar
Murphy, E.C., Hoganson, J.W., and Forsman, N.F. 1993, The Chadron, Brule and Arikaree formations in North Dakota: The buttes of southwestern North Dakota: North Dakota Geological Survey, Report of Investigations Number 96, 144 p.Google Scholar
Ogg, J.G., 2012, Geomagnetic polarity time scale, in Gradstein, F.M., Ogg, J.G., Schmitz, M.D., and Ogg, G.M., eds., The Geologic Timescale 2012: Oxford, Elsevier, p. 85–114.Google Scholar
Prothero, D.R., 1996, Magnetic stratigraphy of the White River Group in the High Plains, in Prothero, D.R., and Emry, R.J., eds., The Terrestrial Eocene-Oligocene Transition in North America: New York, Cambridge University Press, p. 262–277.10.1017/CBO9780511665431.014CrossRefGoogle Scholar
Prothero, D.R., and Emry, R.J., 2004, The Chadronian, Orellan, and Whitneyan North American Land Mammal Ages, in Woodburne, M.O., ed., Late Cretaceous and Cenozoic mammals of North America: biostratigraphy and geochronology: New York, Columbia University Press, p. 156–168.Google Scholar
Ride, W.D.L., 1964, A review of Australian fossils marsupials: Journal of the Royal Society of Western Australia, v. 47, p. 97–131.Google Scholar
Skinner, M.F., 1951, The Oligocene of western North Dakota, in Bump, J.D., ed., Society of Vertebrate Paleontology Guidebook, 5th Annual Field Conference, Western South Dakota, August–September 1951: Rapid City, South Dakota, p. 51–58.Google Scholar
Stirton, R.A., 1935, A review of the Tertiary beavers: University of California Publications in the Geological Sciences, v. 23, p. 391–458.Google Scholar
Stock, C., and Furlong, E.L., 1922, A marsupial from the John Day Oligocene of Logan Butte, eastern Oregon: University of California Publications in Geological Sciences, v. 13, p. 311–317.Google Scholar
Stone, W.J., 1973, Stratigraphy and Sedimentary History of Middle Cenozoic (Oligocene and Miocene) Deposits in North Dakota [Ph.D. dissertation]: Grand Forks, North Dakota, University of North Dakota, 217 p.Google Scholar
Trouessart, E.-L., 1879, Catelogue des mammiferes vivants et fossils: II. Chiroptera: Revue et magazine de zoologie pure et applique, Paris, v. (3)VI, p. 201–254.Google Scholar
Voss, R.S., Gutierrez, E.E., Solari, S., Rossi, R.V., and Jansa, S.A., 2014., Phylogenetic relationships of mouse opossums (Didelpohidae, Marmosa) with a revised sybgeneric classification and notes on sympatric diverstiy: American Museum Novitates, no. 3817, p. 1–27.10.1206/3817.1CrossRefGoogle Scholar
Wood, A.E., 1937, The mammalian fauna of the White River Oligocene. Part 2, Rodentia: Transactions of the American Philosophical Society, v. 28, p. 155–262.Google Scholar