Era
Cretaceous
16
Ordovician
9
Cambrian
8
Tertiary
8
Crétacé
7
Mississippian
7
Paleozoic
6
From 65 to 140 million years ago
5
Mesozoic
5
Pleistocene
5
Cenozoic
4
Cambrien
3
Devonian
3
From 10 thousand to 2 million years ago
3
From 425 to 570 million years ago
3
From 65 to 230 million years ago
3
Jurassic
3
Mésozoïque
3
Mississippien
3
Ordovicien
3
Tertiaire
3
Triassic
3
Cénozoïque
2
From 2 to 140 million years ago
2
From 230 to 570 million years ago
2
From 310 to 345 million years ago
2
Jurassique
2
Paléozoïque
2
Pléistocène
2
Quaternary
2
Silurian
2
1803-1858
1
19th century
1
20th century
1
Dévonien
1
Early works to 1800
1
From 140 to 190 million years ago
1
From 190 to 230 million years ago
1
From 2 million years ago
1
From 2 to 570 million years ago
1
From 2 to 65 million years ago
1
From 310 to 405 million years ago
1
From 405 to 425 million years ago
1
From 65 million years ago
1
From 65 to 190 million years ago
1
Holocene
1
Miocene
1
Oligocene
1
PALEOCENO
1
Quarternary
1
more ...