Discovery of the first early Cenozoic euprimate (Mammalia) from Inner Mongolia ; American Museum novitates, no. 3571

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dc.contributor.authorNi, Xijun.en_US
dc.contributor.authorBeard, K. Christopher.en_US
dc.contributor.authorMeng, Jin (Paleontologist)en_US
dc.contributor.authorWang, Yuan-qing.en_US
dc.contributor.authorGebo, Daniel Lee, 1955-en_US
dc.date.accessioned2007-05-24T17:23:15Z
dc.date.available2007-05-24T17:23:15Z
dc.date.issued2007en_US
dc.description11 p. : ill. ; 26 cm.en_US
dc.descriptionIncludes bibliographical references (p. 10-11).en_US
dc.description.abstractAlthough it is widely thought that euprimates originated in Asia, the fossil record of early euprimates remains sparse there. We describe herein a new omomyid euprimate, Baataromomys ulaanus, n. gen. et sp., based on an isolated right lower m2 from Bumbanian strata at Wulanboerhe in the Erlian Basin of Inner Mongolia, China. In terms of the size and proportions of m2, Baataromomys ulaanus is intermediate between Eurasian and North American species that are usually assigned to Teilhardina. Morphologically, m2 of Baataromomys differs from that of Teilhardina and North American small-bodied omomyids (including Anemorhysis, Tetonoides, Trogolemur, and Sphacorhysis) in having a smaller paraconid that is less fully connate with the metaconid, a lower entoconid, a weaker crest connecting the metaconid with the entoconid, and a weaker buccal cingulid. The new taxon is much smaller and lower crowned than Steinius, a genus commonly regarded as a basal omomyid. Despite the substantial difference in size, the m2s of Baataromomys and Steinius share some important features, including a very broad talonid basin and a relatively low hypoconid and cristid obliqua. Given its early occurrence and primitive anatomy, Baataromomys may eventually help to clarify the phylogenetic relationships among basalomomyids, but more complete specimens will be required to test this possibility. Baataromomys brandti from the basal Wasatchian zone Wa-0 in the northern Bighorn Basin, Wyoming, was previously allocated to Teilhardina. However, several dental features shared by B. brandti and B. ulaanus suggest that they are closely related. The co-occurrence of Baataromomys in Asia and North America indicates that small-bodied euprimates were able to dispersal across the Beringian region near the Paleocene-Eocene boundary.en_US
dc.format.extent524126 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/5862
dc.languageengen_US
dc.language.isoen_US
dc.publisherNew York, NY : American Museum of Natural Historyen_US
dc.relation.ispartofseriesAmerican Museum novitates, no. 3571en_US
dc.subject.lccQL1 .A436 no.3571, 2007en_US
dc.subject.lcshBaataromomys ulaanus.en_US
dc.subject.lcshPrimates, Fossil -- Geographical distributionen_US
dc.subject.lcshPrimates -- Dispersal -- Bering Land Bridge.en_US
dc.subject.lcshOmomyidae -- Phylogeny.en_US
dc.subject.lcshMammals, Fossil -- China -- Erlani Basin.en_US
dc.subject.lcshMammals, Fossil -- China -- Inner Mongolia.en_US
dc.subject.lcshPaleontology -- Paleogene -- China -- Erlani Basin.en_US
dc.subject.lcshPaleontology -- Paleogene -- China -- Inner Mongolia.en_US
dc.subject.lcshPaleontology -- China -- Erlani Basin.en_US
dc.subject.lcshPaleontology -- China -- Inner Mongolia.en_US
dc.titleDiscovery of the first early Cenozoic euprimate (Mammalia) from Inner Mongolia ; American Museum novitates, no. 3571en_US
dc.title.alternativeAsian Cenozoic euprimateen_US
dc.typetexten_US

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