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新生代有几个纪都叫什么
更新时间: 2020-09-22 00:00:00  

新生代有三个纪,约开始于六千七百万年前,延续至今。新生代时地球的面貌逐渐接近现代,植被带分化日趋明显,哺乳动物,鸟类,真骨鱼和昆虫一起上统治了地球。

分别为老第三纪,新第三纪,第四纪。

关键词: 新生代 什么

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