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恐龙出现在三叠纪,繁盛于侏罗纪,灭绝于白垩纪。由于中生代气候温暖湿润,四季如春,到处生长着高大的蕨类植物,所以很适宜爬行动物的生存。尤其是各种恐龙,它们迅速繁衍生殖,遍布地球,品种达到数千种,控制了当时的海、陆、空三大栖息环境,称霸地球长达1.5亿年之久。恐龙是在地球上生活过的最成功动物物种之一。那么,化石是什么呢?化石就是生活在遥远年代的生物遗体
Dinosaurs appear in the Triassic, prosperous in the Jurassic, extinct in the Cretaceous. As the Mesozoic climate is warm and humid, four seasons such as spring, everywhere growing tall ferns, it is suitable for the survival of reptiles. In particular, various dinosaurs rapidly multiply and reproduce all over the earth and reach thousands of species. They control the three major habitats of the sea, land and air and dominate the Earth for 150 million years. Dinosaurs are one of the most successful animal species living on Earth. So what is a fossil? Fossils are living beings living in distant ages