3 jan 140000000 ano antes da era comum - Placentals and marsupials split
Descrição:
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.
Adicionado na linha do tempo:
Data:
3 jan 140000000 ano antes da era comum
Agora
~ 5883516 years ago