Era
Miocene
8
Jurassic
6
Tertiary
6
Cretaceous
5
19th century
3
20th century
3
Oligocene
3
1784-1857
2
1834-1915
2
Quaternary
2
1564-1616
1
1785-1848
1
1801-1881
1
1802-1847
1
1808-1847
1
1849-1861
1
1859-1935
1
1860-1939
1
1866-1895
1
1912-1997
1
1938-
1
1946-
1
1958-
1
1960-1988
1
1975-
1
21st century
1
Cenozoic
1
Devonian
1
Edo period, 1600-1868
1
Eocene
1
Meiji period, 1868-1912
1
Neogene
1
Permian
1
Pliocene
1