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6 août 440056427 av. J.-C. - first mass extinction event

Description:

the end ordovician period occurred 440 million years ago and 86% of all species were lost https://userpages.umbc.edu/~squire/extinctions.html

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alex huang science timeline

26 oct. 2018

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Date:

6 août 440056427 av. J.-C.

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~ Il y a 5883516 ans

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