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Concept
Anserimimus
Summary
Anserimimus (ˌænsərᵻˈmaɪməs ; "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.
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.
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 In an unpublished thesis Robert Bronowicz in 2005 gave a detailed description of the species, also referring additional material to it, among which a second partial skeleton,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. However, in 2010 Bronowicz concluded this other find, though most closely related to Anserimimus planinychus, probably represented a separate taxon.
Anserimimus was a medium-sized ornithomimosaurian. Gregory S. Paul in 2010 estimated its length at three metres, its weight at fifty kilogrammes.
Official source
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