Tidsperiode
19th century
306
1785-1851
281
Early works to 1800
199
20th century
168
1800-1899
86
18th century
78
17th century
59
1900-1999
59
1823-1915
53
To 1500
51
1934-
45
1787-1874
44
1769-1832
42
21st century
35
1804-1881
34
1766-1813
32
Cretaceous
31
1949-
29
Tertiary
29
1800 - 1899
25
Miocene
25
1647-1717
24
1903-1989
23
Pleistocene
23
1700-1799
22
Geschichte
22
1925-1995
21
1809-1882
20
Quaternary
20
Triassic
20
-868 or 869
19
1944-
19
Ordovician
19
1772-1844
18
1907-1988
18
1953-
17
19th Century
17
Eocene
17
From 10 to 25 million years ago
17
From 2 to 65 million years ago
17
From 65 to 140 million years ago
17
Holocene
17
From 10 thousand to 2 million years ago
16
From 190 to 230 million years ago
16
1341?-1405
15
1600-1699
15
1807-1873
15
1908-1996
15
1925-
15
1936-
15
mere ...