Proterozoic (Former, Earlier Life) (jan 1, 1000000000 BC – jan 1, 538800000 BC)
Description:
The Proterozoic eon is characterized by the appearance of oxygen in the atmosphere and the emergence of complex single-celled organisms.
Added to timeline:
Date:
jan 1, 1000000000 BC
jan 1, 538800000 BC
~ 5883516 years