Era
20th century
8
1865-1918
4
Precambrian
4
1893
3
1945-
3
19th century
3
1893-1897
2
1929
2
From 570 million to 5 billion years ago
2
Tertiary
2
1750-1918
1
1757-1804
1
1783-1809
1
1798-1888
1
1818-1883
1
1829-1910
1
1850-1924
1
1872-1928
1
1874-1964
1
1890-1969
1
18th century
1
1900-1999
1
1918-
1
1960-1988
1
1979-
1
1980-1993
1
1993-
1
20ème si ècle
1
21st century
1
Carboniferous
1
Eocene
1
From 2 to 65 million years ago
1
From 280 to 345 million years ago
1
From 40 to 55 million years ago
1
Pliocene
1
Since 1945
1
Since 2020
1
To 1865
1