对翼龙的几点新解释

DISCUSSION ABOUT PTEROSAURS

在概述翼龙研究状况基础上根据所掌握资料提出：①翼龙发达的胸骨和肩带说明不但能滑翔而且能进行相当强度的动力飞行。②翼龙身覆皮毛显示其具有温血生理特征，其习性在某种程度上可能与鸟类相似，如筑巢、产卵、孵卵及哺雏等。③一些类似水禽的翼龙在足趾间可能长有划水用的蹼。

There are many insoluble mysteries of pterosaurs yet. Although the flying reptiles have been known for more than 200 years and several hundreds of the fossil specimens have been discovered in Europe, America, Asia, Africa and Australia, most of which are too fragmentary to reconstruct features. When critical fossils are discovered recently, palaeontologists are justified in kicking up their heels. Ones cause for celebration are furred rhamphorhynchas from Germany and Kazakhstan, crowned pterodactylas from America and China, the lower jaw with hairlike teeth of a pterodactyla from Argentina and the encranial cast of a pterosaur from England etc. Based on information of the group of highly specialized extinct creatures, it is suggested that pterosaurs be endotherms, similar to birds in some aspects such as in gildder, flappers, nesters, hatchers, fosterers and son on. Some aquatic inhabitants of them developed web feet as in gull (Larus), pelican(Pelecanus) and cormorant(Phalacrocorax) etc.