Era
20th century
6
19th century
4
21st century
4
1949-
3
2001-
3
18th century
2
1908-1993
2
2017-
2
Holocene
2
Paleocene
2
To 1500
2
1782-1862
1
17th century
1
1834-1902
1
1834-1903
1
1858-1942
1
1865-
1
1872-1928
1
1893?-
1
1908-1996
1
1909-1997
1
1945-
1
1960-2012
1
1963-
1
1979-
1
2001-2009
1
2011-2021
1
2021-
1
30 B.C.-476 A.D.
1
Anglo-Saxon period, 449-1066
1
British occupation, 1765-1947
1
Cenozoic
1
Modern period, 1500-
1
Permian
1
Pleistocene
1
Proterozoic
1