Era
Quaternary
66
From 2 million years ago
39
19th century
22
18th century
19
20th century
14
1700-1799
11
Quaternaire
10
Precambrian
8
Early works to 1800
7
Geschichte
7
Tertiary
7
1800-1899
6
1900-1999
6
1945-1989
6
1989-
5
1751-1800
4
1769-1859
4
1791-1871
4
1976-2000
4
21st century
4
Cenozoic
4
From 10 thousand years ago
4
From 570 million to 5 billion years ago
4
Holocene
4
1473-1543
3
1564-1642
3
1707-1778
3
1818-1889
3
1867-1941
3
1879-1955
3
1918-
3
1918-1945
3
1959-
3
Cretaceous
3
From 140 to 190 million years ago
3
Jurassic
3
Pleistocene
3
Since 1945
3
17th century
2
1800 - 1899
2
1801-1917
2
1809-1882
2
1834-1849
2
1840-1878
2
1858-1919
2
1862-1949
2
1887-1920
2
1895-1979
2
1900 - 1999
2
1945-
2
more ...