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Cycnorhamphus
''Cycnorhamphus'' (meaning "swan beak") is a genus of ctenchasmatoid pterodactyloid pterosaur from the Late Jurassic of France and Germany. It is probably synonymous with the genus ''Gallodactylus''.
==Description==
''Cycnorhamphus'' had historically been assumed to have had long jaws with teeth at the very tip, akin to those of ''Pterodactylus antiquus''. However, recent work on a specimen nicknamed "The Painten Pelican"〔Bennett (2013)〕 has revealed that the animal possesses a very unusual jaw anatomy, with peg-like teeth at the jaw tips - blunter and stouter in older individuals -, jaw curvatures behind said teeth that form angled arcs away from the biting surface, forming thus an opening, and two poorly understood soft tissue structures occupying this opening from the upper jaw, showing mineralisation. The purpose of these adaptations is unknown,〔Frey and Tischlinger (2010)〕 but they are more obvious and well developed in adult animals. It has been speculated that the jaws functioned similar to those of openbill storks, allowing the animal to hold hard invertebrates like mollusks and either crush or bisect them.〔Witton, Mark P. (2013), ''Pterosaurs: Natural History, Evolution, Anatomy''〕
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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