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First True Mammal (nov 9, 22500000 BC – mar 1, 16700000 BC)

Description:

The Brasilodon quadrangularis at 225 mya would be considered the first mammal if true diphyodantia is sufficient enough evidence to consider something a true mammal. If not, then it would go to an unambiguous mammal fossil that is eutherian.

Added to timeline:

Mammal Evolution

ByAllyson Smithson
3 months ago
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Date:

nov 9, 22500000 BC
mar 1, 16700000 BC
~ 5803854 years
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