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jul 26, 177198414 BC - First endothermic synapsids
Description:
Mammalian ancestors begin to evolve what used to be called "warm-bloodedness."
Added to timeline:
Chordate Evolution over Geologic Time
By
Zahur Ashrafuzzaman
26 Jan 2018
2
0
1678
Date:
jul 26, 177198414 BC
Now
~ 5883516 years ago
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