noun
- From 40 million to 25 million years ago; appearance of sabertoothed cats.
- synonyms: Oligocene epoch
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). oligocene. Retrieved September 24, 2026, from http://smartdefine.org/oligocene/definitions/1249812 |
| Chicago | WordNet. 2010. "oligocene" http://smartdefine.org/oligocene/definitions/1249812 (accessed September 24, 2026). |
| Harvard | WordNet 2010, oligocene, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/oligocene/definitions/1249812>. |
| MLA | WordNet. "oligocene" 23 October 2010. Web. 24 September 2026. <http://smartdefine.org/oligocene/definitions/1249812> |