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Reappraisal of Endotherium niinomii Shikama, 1947, a eutherian mammal from the Lower Cretaceous Fuxin Formation, Fuxin-Jinzhou Basin, Liaoning, China

Abstracts

Reinvestigation of the Early Cretaceous eutherian mammal Endotherium niinomii Shikama, 1947, based on the impressions of the type specimen, casts made from the impressions, and the original description, indicates that E. niinomii is characterized by the following characters: decrease in size from the m1 to the m3; a moderate height difference between the trigonid and talonid of lower molars; blunt lower molar cusps; the protoconid being the largest among the trigonid cusps; the paraconid being as tall as the metaconid; the p3 not being obviously reduced; and possible possession of five lower premolars. These characteristics clearly distinguish E. niinomii from other known Cretaceous eutherians, and support its taxonomic identity as a valid taxon.
Download Comment From cooperative journals:《古脊椎动物学报》 Hits:4260 Downloads:871
DOI:10.19615/j.cnki.1000-3118.180226
Recommended references: WANG Yuan-Qing,KUSUHASHI Nao,JIN Xun, LI Chuan-Kui,SETOGUCHI Takeshi,GAO Chun-Ling,LIU Jin-Yuan.(2018).Reappraisal of Endotherium niinomii Shikama, 1947, a eutherian mammal from the Lower Cretaceous Fuxin Formation, Fuxin-Jinzhou Basin, Liaoning, China.古脊椎动物学报.doi:10.19615/j.cnki.1000-3118.180226 (Click&Copy)
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[V1] 2018-02-26 12:49:36 chinaXiv:201802.00746V1 Download
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