PALEOZOIC ERA (jan 1, 542000000 BC – dec 30, 251000000 BC)
Description:
GEOLOGICAL:-Start of Andean-Saharan ice age.
- Atmospheric oxygen levels reach over 30%
BIOLOGICAL:
-Animals with shells appear
-Ferns and seed-bearing plants appear
GEORGIA:
-the sea flooded over the eastern edge of North America, a thick sequence of shallow marine sediments was deposited
Added to timeline:
Date:
jan 1, 542000000 BC
dec 30, 251000000 BC
~ 5883516 years