2.7 - 2.64
2.64 - 2.58
2.58 - 2.52
2.52 - 2.46
2.46 - 2.4
1a
3K-500BCE
1b
500BCE-2K
3
BCE
4
CE
5
Future
2.1-1.8
1.8-1.5
3-2.7
2.7-2.4
2.4-2.1
Prev
3 Billion
Next
300M
2.7 - 2.4
60M
600-300
300-0
1.5-1.2
1.2-900
900-600
1
30K
2
300K
3
3M
4
30M
5
300M
6
3B
7
15 B
11th Galactic year 2.75 - 2.5
10th Galactic year 2.5 - 2.25
Archean Eon 3.9 - 2.5
Proterozoic Eon
2.5 - 540 M
Precambrian Time
4.5 - 543 M
