Era
Quaternary
4
From 2 million years ago
3
Triassic
3
Cretaceous
2
From 65 to 140 million years ago
2
1828-1898
1
1890
1
1892
1
18th century
1
1914-1918
1
Early works to 1800
1
Eighteen nineties
1
From 190 to 230 million years ago
1
From 190 to 280 million years ago
1
From 65 to 230 million years ago
1
Permian
1
To 1800
1