Era
Geschichte
48
Jurassic
32
1801-1900
30
Geschichte 1840-1873
24
Triassic
21
1901-
18
Carboniferous
17
Tertiary
17
1901
13
19th century
13
1809-1882
11
To 1800
10
Geschichte Anfänge-1800
9
Cretaceous
8
16th century
7
Permian
7
(1571-1630)
6
(1809-1882)
6
Geschichte 1800-1900
6
Geschichte 1867-1881
6
Geschichte 1875
6
Geschichte 1900
6
Geschichte 800 v. Chr.-500
6
Silurian
6
(1769-1859)
5
1571-1630
5
1664
5
1769-1859
5
Geschichte 1880
5
Geschichte 500-1500
5
Miocene
5
Quaternary
5
1665
4
1707-1778
4
1858-1947
4
19th Century
4
Geschichte 1650-1860
4
Geschichte 1789-1827
4
Geschichte 1870
4
Geschichte Anfänge-1630
4
(1564-1642)
3
(1642-1727)
3
(1820-1903)
3
(1834-1919)
3
1753-1900
3
1807
3
1831-1900
3
1834-1919
3
1860-1899
3
18th century
3
more ...