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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)

Added to timeline:

地球地质年代表

8 Feb 2020

1

0

1260

Date:

jan 1, 458000000 BC

oct 18, 443800000 BC

~ 5883516 years

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