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jan 1, 201280635 BC - 生物灭绝事件此次事件对海洋生物的摧残最为严重除了鱼龙之外的所有海生爬行动物消失此次灭绝事件之后，恐龙开始称霸地球

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https://baike.baidu.com/item/%E4%B8%89%E5%8F%A0%E7%BA%AA/383932?fr=aladdin

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地球地质年代表

8 Feb 2020

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jan 1, 201280635 BC

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~ 5883516 years ago

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