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3 janv. 140000000 av. J.-C. - Placentals and marsupials split

Description:

The remaining mammals split into Metatheria and Eutheria, which derive into marsupials and placentals respectively. Both carry their young internally for a significant period of time. the former carry them in a pouch after some internal development, and the latter feature almost total internal development.

Ajouté au bande de temps:

Chordate Evolution over Geologic Time

ByZahur Ashrafuzzaman
26 janv. 2018

Date:

3 janv. 140000000 av. J.-C.
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~ Il y a 5883516 ans
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