Era
19th century
105
20th century
59
247 B.C.-182 B.C
40
18th century
23
Triassic
21
1800-1899
20
218-201 B.C
19
1900-1999
18
Cretaceous
17
Geschichte
15
21st century
12
Mesozoic
12
From 190 to 230 million years ago
11
1840-1911
10
Jurassic
10
Early works to 1800
9
1775-1851
8
1914-1918
8
1945-
8
247-182 B.C
8
Quaternary
8
1850-1900
7
1900 - 1999
7
20e siècle
7
476-1492
7
1700-1899
6
19e siècle
6
247 B.C.-182 B. C
6
Since 1945
6
To 1500
6
1769-1821
5
1810-1864
5
1900-1950
5
1979-
5
2000-2099
5
Cenozoic
5
From 65 to 140 million years ago
5
From 65 to 230 million years ago
5
Tertiary
5
-approximately 287
4
1749-1832
4
1788-1824
4
1819-1900
4
1844-1900
4
1849-1921
4
1909-1946
4
1939-1945
4
From 2 million years ago
4
From 2 to 65 million years ago
4
1465-1522
3
more ...