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Anserimimus ( ; "goose mimic") is a genus of ornithomimid theropod dinosaur, from the Late Cretaceous Period of what is now Mongolia. It was a lanky, fast-running animal, possibly an omnivore. From what fossils are known, it probably closely resembled other ornithomimids, except for its more powerful forelimbs. ==Discovery== ''Anserimimus'' was found in the Mongolian aimag, or province, of Bayankhongor during a joint Soviet-Mongolian expedition to the Gobi Desert, in the late 1970s. Mongolian paleontologist Rinchen Barsbold named ''Anserimimus'' in 1988, combining the Latin ''anser'' meaning 'goose' with the Greek ''mimos'' meaning 'mimic'. ''Anser'' is the generic name of several species of geese. Although ''Anserimimus'' does not specifically resemble a goose, ornithomimosaurs have traditionally been named after different types of birds, such as ''Struthiomimus'' ('ostrich mimic'), ''Gallimimus'' ('rooster mimic'), and ''Pelecanimimus'' ('pelican mimic'). The one named species of ''Anserimimus'' is called ''Anserimimus planinychus''. The specific name is derived from the Latin ''planus'' meaning 'flat', and the Ancient Greek ὄνυξ, ''onyx'', meaning 'claw', in reference to the peculiar flattened claws which characterize the genus.〔Rinchen Barsbold, 1988, "A new Late Cretaceous ornithomimid from the Mongolian People's Republic", ''Paleontological Journal'' 22: 124-127〕 ''Anserimimus'' was recovered from the Nemegt Formation of Mongolia. The Nemegt is thought to represent alluvial plains containing meandering rivers. The layer ''Anserimimus'' was found, is dating from the early Maastrichtian stage of the Late Cretaceous, or about 70 million years ago. There is only a single specimen of ''Anserimimus'', its holotype IGM 100/300. It consists of a rather complete and articulated skeleton lacking the skull and lower jaws. Limited information has been published on the anatomy of ''Anserimimus'', as Barsbold did not describe most of these bones, instead focusing on only those with features that set ''Anserimimus'' apart from other ornithomimids. In an unpublished thesis Robert Bronowicz in 2005 gave a detailed description of the species, also referring additional material to it, among which a second partial skeleton, specimen ZPAL MgD-I/65.〔Bronowicz, R., 2005, ''Upper Cretaceous dinosaur'' Anserimimus planinychus ''(Theropoda: Ornithomimidae) from Mongolia''. MS Thesis, University of Warsaw〕 However, in 2010 Bronowicz concluded this other find, though most closely related to ''Anserimimus planinychus'', probably represented a separate taxon. 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「Anserimimus」の詳細全文を読む スポンサード リンク
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