Era
Cretaceous
308
Precambrian
204
Tertiary
204
Quaternary
154
Paleozoic
147
Cenozoic
136
Permian
111
Mesozoic
108
Pennsylvanian
100
Mississippian
92
Triassic
87
Eocene
86
Ordovician
83
Jurassic
79
Devonian
76
Pleistocene
68
Miocene
62
Cambrian
55
Proterozoic
48
Pliocene
43
Carboniferous
39
Silurian
39
Oligocene
34
Holocene
27
Archaean
23
Paleocene
21
Neogene
19
Paleogene
7
19th century
4
1834-1902
3
1818-1891
2
1829-1887
2
1902-1996
2
1638-1686
1
1748-1819
1
1749-1817
1
1809-1882
1
1843-1901
1
1843-1918
1
1848-1927
1
1860-1890
1
1860-1939
1
1864-1953
1
1867-1955
1
1882-1981
1
1884-1955
1
1890-
1
1892-1980
1
1898-1974
1
1899-1970
1
more ...