Era
Devonian
17
1809-1882
15
Permian
15
Cambrian
14
Tertiary
13
Cretaceous
11
Precambrian
11
Archaean
10
Pleistocene
10
Mesozoic
8
Ordovician
8
Proterozoic
7
Quaternary
7
1890-1971
6
19th century
6
Cenozoic
6
Silurian
6
1825-1895
5
Carboniferous
5
Paleozoic
5
1825-1896
4
1918-
4
2000-2099
4
20th century
4
21st century
4
Triassic
4
1778-1846
3
1823-1913
3
1862-1942
3
1945-
3
1956-
3
19e siècle
3
From 10 thousand to 2 million years ago
3
From 2 million years ago
3
Pléistocène
3
Quaternaire
3
1743-1820
2
1754-1803
2
1760-1826
2
1762-1836
2
1774-1814
2
1775-1810
2
1788-1851
2
1795-1869
2
1808-1861
2
1882-1958
2
1884-1955
2
1885-1925
2
1899-1985
2
18th century
2
more ...