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Psephochelys : ウィキペディア英語版 | Psephochelys
''Psephochelys'' is an extinct genus of placodont reptile from the Late Triassic of China. It is represented by a single species, ''Psephochelys polyosteoderma'', named in 2002 on the basis of a single partial skeleton found in an outcrop of the Carnian-age Falong Formation in Guizhou Province. ''Psephochelys'' is classified as a member of the family Placochelyidae, which is within the larger placodont superfamily Cyamodontoidea. Like other cyamodontoids, ''Psephochelys'' has a wide shell covering its body, similar to that of a turtle. However, unlike those of other cyamodontoids, the shell of ''Psephochelys'' only covers its back. The plastron, which covers the underside of other cyamodontoids, is absent, and in its place are rib-like gastralia surrounded by loosely connecting osteoderms or bony plates. ==References==
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「Psephochelys」の詳細全文を読む
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