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New craniodental materials of Litolophus gobiensis (Perissodactyla, "Eomoropidae") from Inner Mongolia, China, and phylogenetic analyses of Eocene chalicotheres. (American Museum novitates, no. 3688)

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dc.contributor.author Bai, Bin, 1981-
dc.contributor.author Wang, Yuan-qing.
dc.contributor.author Meng, Jin (Paleontologist)
dc.date.accessioned 2010-07-01T14:03:39Z
dc.date.available 2010-07-01T14:03:39Z
dc.date.issued 2010
dc.identifier.uri http://hdl.handle.net/2246/6072
dc.description 26, [1] p. : ill. ; 26 cm. "June 25, 2010." Includes bibliographical references (p. 19-22). en
dc.description.abstract We describe new craniodental specimens of Litolophus gobiensis recently unearthed from the type locality of the genus, and conduct phylogenetic analyses of Eocene chalicotheres based on a data matrix containing 21 taxa and 58 craniodental characters. Although the phylogenetic relationships of the Eocene chalicotheres are not well resolved in the strict component consensus tree, the 50% majority rule consensus shows that two post-earliest Eocene chalicothere lineages are present. The first lineage represents the main line of chalicothere evolution, including "Grangeria" anarsius, Eomoropus, and post-Eocene chalicotheres. The second lineage, consisting of Litolophus gobiensis and Grangeria canina, is the sister group and stem member to the main lineage. The derivative strict reduced consensus tree, with three unstable taxa pruned, supports some tree topologies of the 50% majority consensus. The taxonomy of some chalicothere taxa is revised based on the phylogenetic analyses, such as "Grangeria" anarsius being probably better referred to the genus Eomoropus as originally identified, E. ulterior being the sister taxon to E. amarorum, and Lophiodon being excluded from the Ancylopoda but allied with the Ceratomorpha. en
dc.format.extent 4837678 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher American Museum of Natural History. en
dc.relation.ispartofseries American Museum novitates, no. 3688. en
dc.subject Litolophus gobiensis. en
dc.subject Skull. en
dc.subject Mandible. en
dc.subject Teeth, Fossil. en
dc.subject China. en
dc.subject Inner Mongolia. en
dc.subject Erlani Basin. en
dc.subject Chalicotherioidea. en
dc.subject Perissodactyla, Fossi. en
dc.subject Eocene. en
dc.title New craniodental materials of Litolophus gobiensis (Perissodactyla, "Eomoropidae") from Inner Mongolia, China, and phylogenetic analyses of Eocene chalicotheres. (American Museum novitates, no. 3688) en
dc.title.alternative Craniodental materials of Litolophus gobiensis. en


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  • American Museum Novitates
    Novitates (Latin for "new acquaintances"), published continuously and numbered consecutively since 1921, are short papers that contain descriptions of new forms and reports in zoology, paleontology, and geology. New numbers are published at irregular intervals.

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