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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

8 Feb 2020

1

0

1258

Date:

jan 1, 485290000 BC

jan 1, 443400000 BC

~ 5883516 years

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