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Dermodactylus
''Dermodactylus'' (meaning "skin finger", from Greek ''derma'' and ''daktylos'', in reference to pterosaur wings being skin membranes supported by the ring fingers) was a genus of pterodactyloid (general term for "short-tailed" pterosaur) pterosaur from the Kimmeridgian-Tithonian-age Upper Jurassic Morrison Formation of Wyoming, USA. It is based on a single partial bone, from the hand.
==History and classification==
''Dermodactylus'' is based on YPM 2000,〔YPM=Yale University Peabody Museum of Natural History, New Haven, Connecticut.〕 a distal right fourth metacarpal found by Samuel Wendell Williston at Como Bluff. This bone constituted at the time the oldest pterosaur remains found, recognized, and described from North America. Othniel Charles Marsh first named it as a species of ''Pterodactylus'': ''P. montanus'', the specific name meaning "from the mountains" in Latin, but soon changed his mind and gave it a new generic name. At the same time he assigned another wing bone, teeth, vertebrae, and a scapulacoracoid to it, but this material is probably too large to belong to the type individual.
Its place within the Pterosauria is uncertain, beyond the Pterodactyloidea. The material it is based on is too meager for further classification (although Carpenter ''et al.''. () note that the shape of the bone's articular end means that it did not belong to an ornithocheirid, a type of short-tailed pterosaur that often had a head crest and/or large teeth), or for adding additional remains to the genus with any certainty, and so it is now regarded as a dubious pterodactyloid.〔 It was not even mentioned in the most recent major popular work on pterosaurs.
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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