3 ene 140000000 año aC - Placentals and marsupials split
Descripción:
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.
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fecha:
3 ene 140000000 año aC
Ahora mismo
~ 5883516 years ago