Era
Early works to 1800
13
55 B.C.-449 A.D
7
20th century
6
18th century
5
19th century
5
Roman period, 55 B.C.-449 A.D
5
1274-1329
4
1759-1796
4
Precambrian
4
Robert I, 1306-1329
4
1771-1832
3
1859-1930
3
1900 - 1999
3
From 570 million to 5 billion years ago
3
1306 - 1329
2
1700-1799
2
17th century
2
1901-1950
2
1981-
2
21st century
2
55 B.C. - 449 A.D
2
Paleocene
2
To 1057
2
(0521-0597;
1
1306-1329
1
1542-1587
1
1564-1616
1
1720-1788
1
1800-1899
1
1801-1900
1
1806
1
1817-1875
1
1818
1
1819-1901
1
1822
1
1858-1929
1
1868-1928
1
1892-1978
1
1900-1999
1
1907
1
1948-1993
1
1951-1980
1
1954-
1
1954-2013
1
1961-
1
1966-
1
1971-
1
449-1066
1
55 av. J.-C.-449
1
Carboniferous
1
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