Época
20th century
23
1955-1983
17
1817-1860
4
1860-1910
4
Cambrian
3
Cretaceous
3
Paleozoic
3
Siglo XX
3
(1940-1962)
2
1910-1943
2
1943-1955
2
1983-
2
19th century
2
21st century
2
Carboniferous
2
Miocene
2
Neogene
2
Quaternary
2
Siglo XXI
2
1785-1845
1
1811-1888
1
1895-1974
1
1943-
1
1945-1955
1
1975-1985
1
1983-2002
1
Argentina
1
Dictadura militar, 1976-1983
1
Dirty War, 1976-1983
1
Guerra de independencia 1810-1817
1
Proterozoic
1
Revolution, 1890
1
Revolution, 1955
1
Siglo 20
1
Tertiary
1
To 1810
1
War of Independence 1810-1817
1