Era
20th century
13
19th century
10
21st century
9
Holocene
9
Quaternary
5
1970-
3
Anthropocene
3
1817-1862
2
1886-1948
2
1914-1989
2
1936-
2
1945-
2
1948-
2
1950-
2
1955-
2
Cretaceous
2
Pleistocene
2
To 1500
2
1564-1616
1
1579-1625
1
1766-1834
1
1770-1850
1
1792-1822
1
1797-1851
1
17th century
1
1809-1882
1
1813-1855
1
1838-1914
1
1843-1942
1
1852-1935
1
1856-1922
1
1856-1953
1
1857-1910
1
18th century
1
1902-1968
1
1907-1964
1
1907-1977
1
1909-2005
1
1916-2006
1
1917-2005
1
1929
1
1931-
1
1934-
1
1940-
1
1944-
1
1945-1953
1
1953-1961
1
1954-
1
1960-
1
1962-2000
1
more ...