Era
To 1846
5
Permian
3
1846-1865
2
1846-1950
2
19th century
2
From 230 to 280 million years ago
2
1753-1823
1
1800-1899
1
1836 - 1950
1
1836-1929
1
1836-1950
1
1861-1865
1
1863-1877
1
1909-2002
1
1924-2018
1
1981-1989
1
1988
1
1989-1993
1
1992
1
Civil War, 1861-1865
1
Colonial period, ca. 1600-1775
1
Cretaceous
1
From 10 thousand to 2 million years ago
1
From 140 to 190 million years ago
1
From 425 to 500 million years ago
1
From 65 to 140 million years ago
1
Geschichte 1821-1835
1
Jurassic
1
Ordovician
1
Ordovicien
1
Pleistocene
1
Republic, 1836-1846
1
To 1865
1
To 1899
1