jul 5, 100335450 BC - Major groups of mammals diverge
Description:
Placental mammals split into four major groups: a clade containing rodents and primates; a clade with South American desert-type animals such as armadillos and anteaters; one with African savannah-type animals such as elephants and antelopes; and a clade with most all others.
Added to timeline:
Chordate Evolution over Geologic Time
Phanerozoic geologic time scale showcasing evolutionary deve...
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