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pelycosaurs evolve into therapsids and eventualy replace all pelycosaurs (jan 1, 275000000 BC – dec 31, 201000000 BC)
Description:
275-201M years ago
Added to timeline:
Earth timeline (in the making)
By
Evan
26 days ago
2
0
328
Date:
jan 1, 275000000 BC
dec 31, 201000000 BC
~ 5883516 years
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