Oligocene
- Scope note
- On the geologic time scale the third epoch of the Tertiary period, following Eocene and preceding Miocene, or the first period of more recently designated Paleogene. It extends from about 34 million to 22 million years ago. The epoch is marked by the further development of mammals. The name Oligocene refers to the relatively few moder animals originating during the epoch.
- Date of creation: 10-Feb-2025
Accepted term: 10-Feb-2025