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奥陶纪 距今4亿8540万年前~距今4亿4380万年前 (jan 1, 485290000 BC – jan 1, 443400000 BC)

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地球地质年代表

By徐康
8 Feb 2020
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1126

Date:

jan 1, 485290000 BC
jan 1, 443400000 BC
~ 5883516 years
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