Era
Cretaceous
226
Tertiary
143
From 65 to 140 million years ago
137
Quaternary
114
Precambrian
105
Paleozoic
95
Pleistocene
83
From 2 to 65 million years ago
79
Eocene
75
Cenozoic
74
Permian
74
Miocene
68
Ordovician
62
From 230 to 570 million years ago
60
From 570 million to 5 billion years ago
57
Devonian
55
Mesozoic
55
Jurassic
54
Mississippian
54
From 40 to 55 million years ago
53
Pennsylvanian
51
From 10 thousand to 2 million years ago
47
From 2 million years ago
47
From 230 to 280 million years ago
41
Triassic
40
From 140 to 190 million years ago
37
From 425 to 500 million years ago
37
From 10 to 25 million years ago
36
From 65 million years ago
36
Carboniferous
35
Holocene
35
Proterozoic
32
Anthropocene
31
From 310 to 345 million years ago
31
Cambrian
30
From 2 to 140 million years ago
30
Silurian
30
19th century
28
From 280 to 345 million years ago
27
Oligocene
27
Pliocene
27
From 190 to 230 million years ago
25
From 280 to 310 million years ago
25
From 345 to 405 million years ago
25
Paleocene
22
From 570 million to 2 billion years ago
21
From 65 to 230 million years ago
21
Archaean
18
From 10 thousand years ago
17
From 2 to 25 million years ago
14
more ...