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Gallodactylidae is a group of pterosaurs within the suborder Pterodactyloidea. Gallodactylids differed from other related pterosaurs in several distinct features, including fewer than 50 teeth present only in the jaw tips, and rounded crests present on the rear portion of the skull and jaws but not near the ends of their snouts.〔 ==Classification== Gallodactylidae was named to contain ''Gallodactylus'' (now usually considered a synonym of ''Cycnorhamphus'') and its closest relatives. Many subsequents, however, showed that ''Gallodactylus'' did not form a clade with any non-synoynmous pterosaurs that were not themselves part of a different family, and so the name was often ignored. In 2006, Lu and colleagues named the clade Boreopteridae for the clade containing the common ancestor of ''Boreopterus'' and ''Feilongus'' and all its descendants, which the authors reclassified as close relatives of the ornithocherids. (''Feilongus'' had originally been considered a gallodactylid). All known boreopterids came from the Yixian Formation of Liaoning, which represented a lake system, suggesting that these animals occurred in freshwater habitats. They are thought to have foraged while swimming, trapping prey with their needle-like teeth;〔(Mark Witton, 2011 )〕 this method of fishing was probably analogous to that of ''Platanista'' dolphins, which share a similar dentition. Many possible boreopterids were subsequently described,〔 one possible example being ''Aetodactylus'', which has been claimed to be similar to ''Boreopterus''. Originally considered close relatives of the ornithocheirids, many of these supposed boreopterids have been found to belong to other groups of the pterodactyloid lineage. ''Boreopterus'' and ''Feilongus'' were found by Andres and colleagues in 2013 to be closely related to ''Cycnorhamphus'', making them members of the Gallodactylidae as had been originally thought when ''Feilongus'' was discovered.〔 A subsequent analysis including the other supposed boreopterids found that ''Boreopterus'' itself, and therefore the name Boreopteridae, was indeed a member of the ornithocheiroid clade, but that ''Feilongus'' was in fact a ctenochasmatoid closely related to ''Gnathosaurus''.〔 Cladogram following Andres, Clark, & Xu, 2014. }} Cladogram following Andres & Myers, 2013. |2=Ctenochasmatidae }} }} 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「Gallodactylidae」の詳細全文を読む スポンサード リンク
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