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eastern moa
The eastern moa, ''Emeus crassus'', is an extinct species of moa. When the first specimens were originally described by Richard Owen, they were placed within the genus ''Dinornis'' as three different species, but, was later split off into their own genus, ''Emeus''. ''E. crassus'' is currently the only species of ''Emeus'', as the other two species, ''E. casuarinus'' and ''E. huttonii'' are now regarded as synonyms of ''E. crassus''. It has been long suspected that the "species" described as ''Emeus huttonii'' and ''E. crassus'' were males and females, respectively, of a single species. This has been confirmed by analysis for sex-specific genetic markers of DNA extracted from bone material; the females of ''E. crassus'' were 15-25% larger than males.〔Huynen, L. J., ''et al.'' (2003)〕 This phenomenon — reverse size dimorphism — is not uncommon amongst ratites, being also very pronounced in kiwis.
==Description==
''Emeus'' was of average size, standing tall. Like other moa, it had no vestigial wing bones, hair-like feathers (beige in this case), a long neck and large, powerful legs with very short, strong tarsi. It also had a sternum without a keel and a distinctive palate.〔 Its feet were exceptionally wide compared to other moas, making it a very slow creature. Soft parts of its body, such as tracheal rings (cartilage) or remnants of skin were found, as well as single bones and complete skeletons. As they neared the head, the feathers grew shorter, until they finally turned into coarse hair; the head itself was probably bald.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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