Orleanian
Encyclopedia
The Orleanian age is a period of geologic time (20.0—16.0 Ma), within the Miocene
and used more specifically with European Land Mammal Ages
. It precedes the Astaracian
age and follows the Agenian
age.
Miocene
The Miocene is a geological epoch of the Neogene Period and extends from about . The Miocene was named by Sir Charles Lyell. Its name comes from the Greek words and and means "less recent" because it has 18% fewer modern sea invertebrates than the Pliocene. The Miocene follows the Oligocene...
and used more specifically with European Land Mammal Ages
European Land Mammal Ages
The European Land Mammal Mega Zones are zones in rock layers that have a specific assemblage of fossils based on occurrences of fossil assemblages of European land mammals. These biozones cover most of the Neogene and Paleogene systems The European Land Mammal Mega Zones (abbreviation: ELMMZ,...
. It precedes the Astaracian
Astaracian
The Astaracian age age is a period of geologic time , equivalent with the Middle Miocene and used more specifically with European Land Mammal Ages. It precedes the Vallesian age and follows the Orleanian age. The Astaracian overlaps the Langhian and Serravallian ages....
age and follows the Agenian
Agenian
The Agenian age is a period of geologic time within the Miocene used more specifically with European Land Mammal Ages. It follows the Orleanian age and overlaps the Aquitanian and Burdigalian ages....
age.