Era
19th century
6
17th century
3
18th century
3
Colonial period, ca. 1600-1775
3
20th century
2
Cretaceous
2
New Plymouth, 1620-1691
2
Paleozoic
2
Precambrian
2
Revolution, 1775-1783
2
Silurian
2
-1770
1
1566 or 1567-1644
1
1590-1657
1
1591-1643
1
1732-1799
1
1735-1818
1
1772-1864
1
1775-1865
1
1799-1869
1
1802-1832
1
1804-1864
1
1807-1882
1
1813-1893
1
1817-1862
1
1822-1903
1
1830-1886
1
1900-1999 (20th century)
1
1929-2018
1
1948-
1
Cenozoic
1
Devonian
1
Pleistocene
1
Tertiary
1
Triassic
1
active 16th century
1