Era
1809-1882
1,608
19th century
506
20th century
475
1707-1778
267
18th century
237
1800-1899
198
1900-1999
194
1838-1914
160
Early works to 1800
154
1822-1884
149
1823-1913
127
1825-1895
119
1807-1873
109
1700-1799
101
1834-1919
101
1744-1829
94
1707-1788
88
1867-1941
87
1898-1976
85
Cretaceous
83
1907-1964
81
1729-1799
79
17th century
72
1886-1948
67
Devonian
64
21st century
61
1720-1793
60
1731-1802
56
1800 - 1899
56
1900 - 1999
54
1708-1777
49
Eocene
49
Pleistocene
48
1632-1723
47
From 65 to 140 million years ago
45
20e siècle
44
16th century
42
From 345 to 405 million years ago
41
Miocene
40
1743-1820
39
19e siècle
38
1845-1916
37
1901-
37
Tertiary
36
1783-1840
35
1792-1876
35
1928-
34
1834-1914
33
Cenozoic
33
Quaternary
33
more ...