Proterozoic Eon (jan 1, 2500 BC – jan 1, 542 BC)
Description:
 Continents begin to form as water levels sturdy. Life continues to grow into cells, while the cells grow into plants and fish. The temperature is still really warm. 
Added to timeline:
Date:
jan 1, 2500 BC
jan 1, 542 BC
 ~ 1959 years