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''Nemegtbaatar'' is a genus of mammal from the Upper Cretaceous Period of what is now Mongolia. It existed in the company of much larger dinosaurs, found together in the Nemegt Basin. This creature was a member of the extinct order Multituberculata. It is within the suborder Cimolodonta and is a member of the superfamily Djadochtatherioidea. The genus ''Nemegtbaatar'' (Kielan-Jaworowska Z., 1974) is known by the species ''Nemegtbaatar gobiensis'' found in the Campanian (Upper Cretaceous) Barun Goyot Formation of Mongolia. "Compared to all extant mammals, the braincase in ''Nemegtbaatar'' and ''Chulsanbaatar'' is primitive." (Hurum, 1998). "All extant mammals" includes monotremes, such as the duck-billed platypus, despite its residual egg-laying habit. ''Nemegtbaatar'' was a relatively large member of Djadochtatherioidea, with a skull length of up to 4.5 cm. At least one specimen is in the Institute of Paleobiology collection of the Polish Academy of Science at Warsaw, (ZPAL MgM-1/76). == References == * The abstract of Hurum (1998), () The braincase of two Late Cretaceous Asian multituberculates studied by serial sections. ''Acta Palaeontologica Polonica'' 43(1), p 21-52. * Kielan-Jaworowska (1974), Multituberculate succession in the Late Cretaceous of the Gobi Desert (Mongolia). Palaeontologica Polonica, 30, p.23-44. * Kielan-Jaworowska Z & Hurum JH (2001), "Phylogeny and Systematics of multituberculate mammals." ''Paleontology'' 44, p.389-429. * Much of this information has been derived from () MESOZOIC MAMMALS; Djadochtatherioidea, an Internet directory. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Nemegtbaatar」の詳細全文を読む スポンサード リンク
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