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Pachygenys
''Pachygenys'' ("thick jaw") is a genus of scincomorphan lepidosaur from the Lower Cretaceous of Japan. Its name is composed of the Greek words παχυς ''pachys'' ("thick") and γένυς ''génys'' ("jaw").〔 ==Description== ''Pachygenys'' has a few defining characters, of which include a distinct foreshortening of the dentary tooth row and a reduced amount of dentary teeth. ''P.adachii'' differs from ''P.thlastesa'' in a few aspects; ''P.adachii'' has a shorter tooth row than ''P.thlastesa'', as well as anterior and middle teeth that have uncuspid crowns and posterior teeth with simple, uncuspid conical crowns.
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「Pachygenys」の詳細全文を読む
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