PALEOZOIC ERA (1 janv. 542000000 av. J.-C. – 30 déc. 251000000 av. J.-C.)
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
Ajouté au bande de temps:
Date:
1 janv. 542000000 av. J.-C.
30 déc. 251000000 av. J.-C.
~ 5883516 years