PROTEROZOIC EON (1 gen 1000000000 anni a. C. – 30 dic 542000000 anni a. C.)
Descrizione:
GEOLOGICAL:-First free oxygen is found in the oceans and atmosphere.
BIOLOGICAL:
-Organisms with mitochondria capable of aerobic respiration appear
GEORGIA:
-Oldest rocks in Georgia are found in Piedmont and Blue Ridge provinces.
Aggiunto al nastro di tempo:
Data:
1 gen 1000000000 anni a. C.
30 dic 542000000 anni a. C.
~ 5883516 years