Era
1980
59
Tertiary
22
Eocene
21
Pleistocene
15
Oligocene
13
Miocene
10
Quaternary
10
Cenozoic
8
20th century
7
Éocène
6
From 2 to 65 million years ago
6
Holocene
6
Tertiaire
6
From 10 thousand to 2 million years ago
5
Mesozoic
5
From 2 million years ago
4
From 40 to 55 million years ago
4
Oligocène
4
Pléistocène
4
Quaternaire
4
1900-1999
3
Cretaceous
3
Crétacé
3
Devonian
3
From 25 to 40 million years ago
3
Miocène
3
Ordovician
3
Pliocene
3
Silurian
3
1926-
2
1965-
2
20e siècle
2
21st century
2
Cénozoïque
2
From 10 thousand years ago
2
From 10 to 25 million years ago
2
From 25 to 55 million years ago
2
From 65 to 140 million years ago
2
Holocène
2
Pliocène
2
1886-1948
1
1920-
1
1942-
1
1949-1980
1
1965
1
Cambrian
1
Cambrien
1
Dévonien
1
From 10 thousand to 10 million years ago
1
From 2 to 25 million years ago
1
more ...