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翼龙是一类已经灭绝的飞行爬行动物,生活于晚三叠世至白垩纪,是最早具有主动飞行能力的脊椎动物.翼龙的第四指指骨极度加长形成翅膀,支撑由多层纤维组成的皮膜形成飞翼.一些翼龙的全身具有“毛”状皮肤衍生物,推测为温血动物,卵生.
Pterosaur is a class of extinct flight reptiles, living in the Late Triassic to the Cretaceous, is the earliest active vertebrate flying ability of the pterosaur fourth finger phalanx extremely long wings to form, the support consists of multi-layer fiber The skin of some pterosaurs with “hairy” skin derivatives, presumed to be warm-blooded animals, oviparous.