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上奥陶纪 距今4亿5840万年前 ~距今4亿4380万年前 (jan 1, 458000000 BC – oct 18, 443800000 BC)

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地球地质年代表

By徐康
8 Feb 2020
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0
1126

Date:

jan 1, 458000000 BC
oct 18, 443800000 BC
~ 5883516 years
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