Era
Cretaceous
95
Tertiary
55
Jurassic
43
Precambrian
39
From 65 to 140 million years ago
32
Eocene
31
Paleozoic
31
Pennsylvanian
27
Quaternary
25
From 570 million to 5 billion years ago
21
From 40 to 55 million years ago
20
From 2 to 140 million years ago
17
From 2 million years ago
15
Permian
14
Triassic
13
From 140 to 190 million years ago
12
Cenozoic
10
From 2 to 65 million years ago
10
From 230 to 570 million years ago
9
From 280 to 310 million years ago
7
Holocene
6
From 190 to 230 million years ago
5
Mesozoic
5
Mississippian
5
Paleogene
5
Proterozoic
5
19th century
4
From 10 thousand years ago
4
From 310 to 345 million years ago
4
Miocene
4
Oligocene
4
Carboniferous
3
From 10 to 40 million years ago
3
From 230 to 310 million years ago
3
From 65 million years ago
3
From 65 to 280 million years ago
3
Pleistocene
3
20th century
2
Crétacé
2
From 10 thousand to 2 million years ago
2
From 140 to 230 million years ago
2
From 2 million to 5 billion years ago
2
From 25 to 65 million years ago
2
From 65 to 190 million years ago
2
Neogene
2
Paleocene
2
Pliocene
2
- 1918
1
1849-1933
1
1860-1937
1
more ...