Era
Cretaceous
8
Paleozoic
7
Carboniferous
6
Mesozoic
5
Tertiary
5
Devonian
4
Jurassic
4
Eocene
3
Geschichte
3
Miocene
3
Permian
3
19th Centuury
2
Geschichte 1831-1836
2
Geschichte 1832-1836
2
Pleistocene
2
1698-1892
1
1778-1832
1
From 405 to 425 million years ago
1
Geschichte 1813-1816
1
Geschichte 1846
1
Geschichte 1848-1855
1
Geschichte 1849-1852
1
Neocene
1
Ordovician
1
Pliocene. from old catalog
1
Silurian
1
Triassic
1