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Ordovician Period (nov 10, 485400000 BC – aug 2, 443800001 BC)

Added to timeline:

Chordate Evolution over Geologic Time
By Zahur Ashrafuzzaman
26 Jan 2018
2
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1678

Date:

nov 10, 485400000 BC
aug 2, 443800001 BC
~ 5883516 years
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