Era
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1885-1951
1
1890-
2
1890-1965
2
1898-1974
1
1899-1985
1
18th century
7
1900-1999
5
1900-2099
2
1902-1996
1
1907-
1
1912-1928
1
1913-1972
2
1914-1918
1
1918-1945
1
1920-
1
1920-1986
1
1924-
1
1929-
1
1930-
1
1935-
1
1935-1989
1
1944-
2
1946-
2
1952-
1
1954-
2
1959-
1
1961-
2
1963-
1
1969
1
1970-2000
1
1980
2
19th century
28
2000-2099
1
2020
1
20th century
13
21st century
3
55 B.C.-449 A.D.
1
Anthropocene
31
Archaean
18
Cambrian
30
Carboniferous
36
Cenozoic
74
Civil War, 1861-1865
1
Cretaceous
226
Devonian
55
Eocene
75
From 10 thousand to 10 million years ago
5
From 10 thousand to 140 million years ago
1
From 10 thousand to 2 million years ago
47
From 10 thousand to 25 million years ago
2
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