| 释义 |
始祖鸟shǐzǔniǎo古脊椎动物,头部像鸟,有爪和翅膀,稍能飞行,有牙齿,尾巴很长,由多数尾椎骨构成,除身上有鸟类的羽毛外,跟爬行动物相似。一般认为它是爬行动物进化到鸟类的中间类型,是鸟类的祖先,出现在侏罗纪。{archaeopteryx; ancient vertebrate that flew a little and resembled a reptile except for its bird-like feathers, appearing during the Jurassic Period, with a bird-like head, claws, wings, teeth, and a long tail composed of many caudal vertebras, generally regarded as the intermediate category between reptiles and birds and the ancestor of the bird} |