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Bomburia and Ellipsodon (Mammalia: Mioclaenidae) from the Early Paleocene of New Mexico

Published online by Cambridge University Press:  14 July 2015

Thomas E. Williamson  and
Thomas D. Carr
Thomas E. Williamson
Affiliation:
New Mexico Museum of Natural History and Science, 1801 Mountain Road, NW, Albuquerque 87104-1375,
Thomas D. Carr
Affiliation:
Department of Biology, Carthage College, 2001 Alford Park Drive, Kenosha, Wisconsin 53140-1994,
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Abstract

Bomburia and Ellipsodon are poorly known taxa from the early Paleocene of western North America. New fossil material from New Mexico expands morphological information and allows taxonomic revision of these taxa. Bomburia is a valid genus, whereas Platymastus palantir, previously considered to be a loxolophine arctocyonid, is probably a junior synonym of B. prisca and as such reveals the upper molar morphology of this taxon.

Ellipsodon is highly derived relative to other mioclaenid condylarths. It has a reduced mesial dentition, with the probable loss of the P1/p1. P2–3/p2–3 are reduced and show a simple incisor-like morphology. M1/m1 and especially M2/m2 are simple with highly inflated protocones/protoconid-metaconids accentuating a mortar-and-pestle-like chewing function. The M3/m3 are more reduced than in any other mioclaenid.

Mioclaenidae is monophyletic and endemic to western North America. There is no support for a close relationship between Mioclaenidae and South American or African ungulates.

Type
Research Article
Information
Journal of Paleontology , Volume 81 , Issue 5 , September 2007 , pp. 966 - 985
Copyright
Copyright © The Paleontological Society 

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References

Archibald, J. D. 1998. Archaic ungulates (“Condylarthra”), p. 292–331. In Janis, C. M., Scot, K. M., and Jacobs, L. L. (eds.), Evolution of Tertiary Mammals of North America. Terrestrial Carnivores, Ungulates, and Ungulate-like Mammals, Volume 1, Cambridge University Press, Cambridge.Google Scholar
Archibald, J. D., Schoch, R. M., and Rigby, J. K. Jr. 1983. A new subfamily, Conacodontinae, a new species, Conacodon kohlbergeri, of the periptychidae (Condylarthra, Mammalia). Postilla, no. 191, 24 p.Google Scholar
Bonaparte, J. F., Van Valen, L., and Kramartz, A. 1993. La Fauna local de Punta Peligro, Paleoceneo inferior, de la Provincia del Chubut, Patagonia, Argentina. Evolutionary Monographs, 14, 61 p.Google Scholar
Chow, M., Chang, Y., Wang, B., and Ting, S. 1973. New mammalian genera and species from the Paleocene of Nanshiung, N. Kwangtung. Vertebrata Palasiatica, 11:31–35.Google Scholar
Chow, M., Chang, Y., Wang, B., and Ting, S. 1977. Mammalian fauna from the Paleocene of Nanxiong basin Guangdong. Vertebrata Palasiatica, 20, 100 p.Google Scholar
Cifelli, R. L. 1983. The origin and affinities of the South American Condylarthra and Early Tertiary Litopterna (Mammalia). American Museum Novitates 2772, 49 p.Google Scholar
Cifelli, R. L. 2000. Counting premolars in early eutherian mammals. Acta Palaeontologica Polonica, 45:195–198.Google Scholar
Cope, E. D. 1875. Systematic catalogue of Vertebrata of the Eocene of New Mexico by parties of the expedition of 1874. Chapter 12: Fossils of the Eocene Period. Geographical Surveys west of the 100th Meridian, G. M. Wheeler, Corps of Engineers, U.S. Army, Washington, D.C., 4:37–282.Google Scholar
Cope, E. D. 1881a. Mammalia of the lowest Eocene. American Naturalist, 15:337–338.Google Scholar
Cope, E. D. 1881b. On some Mammalia of the lowest Eocene beds of New Mexico. Proceedings of the American Philosophical Society, 19:484–495.Google Scholar
Cope, E. D. 1881c. Mammalia of the lowest Eocene. American Naturalist, 15:829–831.Google Scholar
Cope, E. D. 1881d. Notes on Creodonta. American Naturalist, 15:1018–1020.Google Scholar
Cope, E. D. 1882. Synopsis of the vertebrata of the Puerco Eocene epoch. American Philosophical Society Proceedings, 20:461–471.Google Scholar
Cope, E. D. 1883a. First addition to the fauna of the Puerco Eocene. American Philosophical Society Proceedings, 20:545–563.Google Scholar
Cope, E. D. 1883b. On new lemuroids from the Puerco Formation. American Naturalist 18:59–61.Google Scholar
Cope, E. D. 1884. Second addition to the knowledge of the Puerco epoch. American Philosophical Society Proceedings, 21:309–324.Google Scholar
Cope, E. D. 1885. The oldest Tertiary Mammalia. American Naturalist, 19:385–386.Google Scholar
Cope, E. D. 1888. Synopsis of the vertebrate fauna of the Puerco series. Transactions of the American Philosophical Society, 16:298–361.Google Scholar
Gazin, C. L. 1939. A Paleocene mammalian fauna from central Utah. Journal of the Washington Academy of Sciences, 28:271–277.Google Scholar
Gazin, C. L. 1941a. The mammalian fauna of the Paleocene of central Utah, with notes on the geology. Proceedings of the United States National Museum, 91, 53 p.Google Scholar
Gazin, C. L. 1941b. Paleocene mammals from the Denver Basin. Colorado. Journal of the Washington Academy of Sciences, 31:289–295.Google Scholar
Gheerbrant, E., Sudre, J., Ikarochene, M., and Abdelkader, M. 2001. First ascertained African “Condylarth” mammals (primitive ungulates: cf. Bulbulodentata and cf. Phenacodonta) from the earliest Ypresian of the Ouled Abdoun Basin, Morocco. Journal of Vertebrate Paleontology, 21:107–118.Google Scholar
Jepsen, G. L. 1930. New vertebrate fossils from the lower Eocene of the Bighorn Basin, Wyoming. Proceedings of the American Philosophical Society, 69:117–131.Google Scholar
Kondrashou, P. and Lucas, S. G. 2006. Early Paleocene (Puercan and Torrejonian) archaic ungulates (Condylarthra, Procreodi, and Acreodi) of the San Juan Basin, New Mexico. New Mexico Museum of Natural History Bulletin, 34:84–97.Google Scholar
Johnston, P. A. and Fox, R. C. 1984. Paleocene and Late Cretaceous mammals from Saskatchewan, Canada. Palaeontographica Abt. A, 186:163–222.Google Scholar
Lemoine, V. 1878. Communication sur les ossements ossements fossilizes des terrains tertiaires inférieurs des environs de Reims. Société d'Histoire Naturelle de Reims, p. 1–24.Google Scholar
Lemoine, V. 1885. Étude sur quelques Mammifères fossils de petite taille de la faune ceraysienne des environs de Reims. Bulletin de la Société Géologique de France, 13:203–217.Google Scholar
Lofgren, D. L., Lillegraven, J. A., Clemens, W. A., Gingerich, P. D., and Williamson, T. E. 2004. Paleocene biochronology of North America: The Puercan through Clarkforkian land mammal ages, p. 43–105. In Woodburne, M. O. (ed.), The first North American land mammal ages of the Cenozoic Era. University of California Press, Berkeley.Google Scholar
Lucas, S. G. and Williamson, T. E. 1993. A new taeniodont from the Paleocene of the San Juan Basin, New Mexico and the phylogeny of the Taeniodonta. Journal of Mammalogy, 74:175–179.Google Scholar
Lucas, S. G. and Williamson, T. E. 1995. Systematic position and biochronological significance of Yuodon and Palasiodon, supposed Paleocene condylarths from China. Neues Jahrbuch für Geologie und Paläontologie Abhandlungen, 196:93–107.Google Scholar
Luo, Z. 1991. Variability of dental morphology and the relationships of the earliest arctocyonids species. Journal of Vertebrate Paleontology, 11:452–471.CrossRefGoogle Scholar
Maddison, W. P. and Maddison, D. R. 1992. MacClade, Version 3.0. Computer program distributed by Sinauer Associates, Inc., Sunderland, Massachusetts.Google Scholar
Marshall, L. G. and De Muizon, C. 1988. The dawn of the age of mammals in South America. National Geographic Research, 4:23–55.Google Scholar
Matthew, W. D. 1897. A revision of the Puerco Fauna. Bulletin of the American Museum of Natural History, 9:259–323.Google Scholar
Matthew, W. D. 1915. A revision of the lower Eocene Wasatch and Wind River faunas, Pt. II, Order Condylarthra, family Hyopsidontidae. Bulletin of the American Museum of Natural History, 34:311–328.Google Scholar
Matthew, W. D. 1937. Paleocene faunas of the San Juan Basin, New Mexico. Transactions of the American Philosophical Society 30, 510 p.Google Scholar
McKenna, M. C. and Bell, S. K. 1997. Classification of Mammals Above the Species Level. Columbia University Press, New York, 631 p.Google Scholar
Muizon, C. De. 1992. La fauna de mamíferos de Tiupampa (Paleocene inferior, Formación Santa Lucía), Bolivia, p. 575–624. In Suarez-Soruco, R. (ed.), Fósiles y Facies de Bolivia. Revista Técnica de Yacimientos Petrolíferos Fiscales de Bolivia, 12.Google Scholar
Muizon, C. De. 1998. Mayulestes ferox a borhyaenoid (Metatheria, Mammalia) from the early Palaeocene of Bolivia. Phylogenetic and palaeobiologic implications. Geodiversitas, 20:19–142.Google Scholar
Muizon, C. De and Brito, I. M. 1993. Le basin calcaire de São José de Itaboraí (Rio de Janeiro, Brésil): Ses relations fauniques avec le site de Tiupampa (Cochabamba, Bolivie). Annales de Paléontologie, 79:233–268.Google Scholar
Muizon, C. De and Cifelli, R. L. 2000. The “condylarths” (archaic Ungulata, Mammalia) from the early Palaeocene of Tiupampa (Bolivia): Implications on the origin of the South American ungulates. Geodiversitas, 22:1–150.Google Scholar
Muizon, C. De and Marshall, L. G. 1987a. Le plus ancient condylarthre (Mammalia) sud-américain (Crétacé supérieur, Bolivie). Comptes Rendus des Séances de lAcadémie des Sciences (Paris), série II, 304:771–774.Google Scholar
Muizon, C. De and Marshall, L. G. 1987b. Deux nouveaux conylarthres (Mammalia) du Maastrichtien de Tiupampa (Bolivie). Comptes Rendus des Séances de l'Académie des Sciences [Paris], Série II, 304:947–950.Google Scholar
Muizon, C. De and Marshall, L. G. 1991. Nouveaux Condylarthres du Paléocène inférieur de Tiupampa (Bolivie). Bulletin du Muséum national d'Histoire naturelle, 13:201–227.Google Scholar
Nessov, L. A. 1985. Novyye mlyekopitayushchiye myela Kyzylkumov [New mammals from the Cretaceous of the Kyzylkum Desert]. Vyestnik Lyeningradskogo Univyersityeta Syeriya 7, 17:8–18. (In Russian with English summary)Google Scholar
Nessov, L. A. 1993. Novyye mlyekopitayushchiye myezozoya sryednuei Azii I Kazakhstana I zamyechaniya po évoyutsii tyeriofaun primorskikh nizmyennostei myela dryevnyei Azii [New Mesozoic mammals of middle Asia and Kazakstan and comments about evolution of theriofaunas of Cretaceous coastal plains of Asia]. Trud Zoologichyeskogo Instituta, Rossiiskaya Akadyemiya Nauk, 249:105–133. (In Russian with English summary)Google Scholar
Nessov, L. A., Archibald, J. D., and Kielan-Jaworowska, Z. 1998. Ungulate-like mammals from the Late Cretaceous of Uzbekistan and a phylogenetic analysis of Ungulatomorpha. Bulletin of the Carnegie Museum of Natural History, 34:40–88.Google Scholar
Nicholson, H. A. and Lydekker, R. 1889. A Manual of Palaeontology for the Use of Students, with a General Introduction on the Principles of Palaeontology. (third edition). London, 2:889–1624.Google Scholar
Osborn, H. F. and Earle, C. 1895. Fossil mammals of the Puerco beds. Collection of 1892. Bulletin of the American Museum of Natural History, 7, 70 p.Google Scholar
Reynolds, T. E. 1936. Two new insectivores from the lower Paleocene of New Mexico. Journal of Paleontology, 10:202–209.Google Scholar
Rigby, J. K. Jr. 1980. Swain quarry of the Fort Union Formation, middle Paleocene (Torrejonian), Carbon County, Wyoming: Geologic setting and mammalian fauna. Evolutinary Monographs 3, p. 179.Google Scholar
Robison, S. F. 1980. Paleocene (Puercan–Torrejonian) mammalian faunas of the North Horn Formation, central Utah. Brigham Young University Geology Studies, 33:87–133.Google Scholar
Russell, D. E. 1964. Les mammifères paléocènes d'Europe. Mémoires du Muséum National d'histoire Naturelle, series C, 13, 324 p.Google Scholar
Schlosser, M. 1923. Mammalia. In Zittel's Grunzüge d. Paläontologie, (fourth ed.). Munich.Google Scholar
Scott, W. B. 1892. A revision of the North American Creodonta. Academy of National Science of Philadelphia Proceedings, 44:291–323.Google Scholar
Sealey, P. L., Williamson, T. E., and Carr, T. D. 2001. New Material of Ellipsodon and assessment of its relationship to other Mioclaenidae (Mammalia, Condylarthra). Journal of Vertebrate Paleontology, 21:100A.Google Scholar
Sereno, P. C. 1998. A rationale for phylogenetic definitions, with application to the higher-level taxonomy of Dinosauria. Neues Jahrbuch für Geologie und Paläontologie Abhandlungen, 210:41–83.Google Scholar
Simpson, G. G. 1929. Paleocene and lower Eocene mammals of Europe. American Museum Novitates, 354, 17p.Google Scholar
Simpson, G. G. 1935. New mammals from the Fort Union of Montana. Proceedings of the United States National Museum, 83:221–224.Google Scholar
Simpson, G. G. 1936. Additions to the Puerco fauna, lower Paleocene. American Museum Novitates, 849, 11 p.Google Scholar
Simpson, G. G. 1937. The Fort Union of the Crazy Mountain Field, Montana, and its mammalian faunas. Bulletin of the United States of National Museum, 169, 287 p.Google Scholar
Sloan, R. E. and Van Valen, L. 1965. Late Cretaceous mammals from Montana. Science, 148:220–227.CrossRefGoogle ScholarPubMed
Standhardt, B. R. 1986. Vertebrate paleontology of the Cretaceous/Tertiary transition of Big Bend National Park, Texas. Unpublished Ph.D. dissertation, Louisiana State University, Baton Rouge, 299 p.Google Scholar
Standhardt, B. R. 1995. Early Paleocene (Puercan) vertebrates of the Dogie Locality, Big Bend National Park, Texas, p. 46–48. In Santucci, V. and McClelland, L. (eds.), National Park Services Paleontological Research. Natural Resources Publication Office, Fort Collins CO.Google Scholar
Swofford, D. L. 1999. PAUP*: Phylogenetic Analysis Using Parsimony (and other methods), Version 4.0b8. Sinauer Associates, Sunderland, Massachusetts.Google Scholar
Taylor, L. H. 1984. Review of the Torrejonian mammals from the San Juan Basin, New Mexico. Unpublished Ph.D. dissertation, University of Arizona, Tucson, 553 p.Google Scholar
Trouessart, E. L. 1904. Catalogus Mammalium Tam Viventium Quam Fossilium. Supplement. Pts. 1–2, 546 p.Google Scholar
Van Valen, L. 1978. The beginning of the Age of Mammals. Evolutionary Theory, 4:45–80.Google Scholar
Van Valen, L. 1988. Paleocene dinosaurs or Cretaceous ungulates in South America? Evolutionary Monograph, 10, 79 p.Google Scholar
Williamson, T. E. 1993. The beginning of the age of mammals in the San Juan Basin: Biostratigraphy and evolution of Paleocene mammals of the Nacimiento Formation. Unpublished Ph.D. dissertation, University of New Mexico, Albuquerque, 487 p.Google Scholar
Williamson, T. E. 1996. The beginning of the Age of Mammals in the San Juan Basin, New Mexico: Biostratigraphy and evolution of Paleocene mammals of the Nacimiento Formation. New Mexico Museum of Natural History Bulletin 8, 141 p.Google Scholar
Williamson, T. E. and Lucas, S. G. 1993. Paleocene vertebrate paleontology of the San Juan Basin, New Mexico. New Mexico Museum of Natural History Bulletin, 2:105–135.Google Scholar
Williamson, T. E. and Lucas, S. G. 1997. The Chico Springs locality, Nacimiento Formation, San Juan Basin, New Mexico. New Mexico Geological Society Guidebook, 48:259–265.Google Scholar
Wilson, R. W. 1951. Preliminary survey of a Paleocene faunule from the Angels Peak area, New Mexico. University of Kansas, Museum of Natural History Publications, 5:1–11.Google Scholar
Wilson, R. W. 1956. The condylarth genus Ellipsodon . University of Kansas, Museum of Natural History Publications, 9:105–116.Google Scholar
Zittel, K. A. 1892. Handbuch der Paläontologie. 1 Abteilung. Palaeozologie, Band 4, Vertebrata. Druck Und Verlag Von R. Oldenburg, München and Leipzig.Google Scholar