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Paleozoic Era (may 22, 590000000 BC – sep 11, 251902001 BC)
Added to timeline:
Chordate Evolution over Geologic Time
By
Zahur Ashrafuzzaman
26 Jan 2018
2
0
1648
Date:
may 22, 590000000 BC
sep 11, 251902001 BC
~ 5883516 years
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