翼龙属可飞行的爬行类动物，生活在大约在2.1亿年至6500万年之前，与恐龙生活在同一时期。
Pterosaurs are flying reptiles that lived at the same time as dinosaurs, between 210 million and 65 million years ago
a silisaurus生活在三叠纪时期，也就是鳄鱼与类鳄生物统治地球的时期，而恐龙在侏罗纪时期对地球统治则是35万年后的事了。
Asilisaurus lived during the Triassic, when crocodile-like beasts ruled the Earth, with dinosaurs becoming dominant only during the Jurassic, some 35 million years later.
恐龙一种，主要生活在中生代时期的陆栖动物，是庞大的食肉或食草爬行类动物，属龙盘目与鸟盘目，已绝种。
Dinosaur, any of various extinct, often gigantic, carnivorous or herbivorous reptiles of the orders saurischia and ornithischia that were chiefly terrestrial and existed during the Mesozoic era.
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