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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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3 gen 140000000 anni a. C. - Placentals and marsupials split

Descrizione:

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.

Aggiunto al nastro di tempo:

Data:

3 gen 140000000 anni a. C.
Adesso
~ 5883516 years ago