Historical Period
To 1500
18
Pleistocene
15
20th century
3
Pliocene
3
To 332 B.C.
3
1818-1881
2
1946-
2
1950-
2
19th century
2
To 1397
2
To 1810
2
To 500
2
-1993
1
1818-1883
1
1872-1950
1
1886-1964
1
1894-1985
1
18th century
1
1913-2006
1
1946-2006
1
392-814
1
From 10 thousand to 2 million years ago
1
Holocene
1
Quaternary
1
To 1057
1
To 1066
1
To 1851
1
To 221 B.C.
1
To 449
1
To 476
1
To 55 B.C.
1
To 939
1