Oligocene

['ɑlɪgo,sin]

Definition

(noun.) from 40 million to 25 million years ago; appearance of sabertoothed cats.

Inputed by Chris--From WordNet

Definition

(a.) Of, pertaining to, or designating, certain strata which occupy an intermediate position between the Eocene and Miocene periods.

(n.) The Oligocene period. See the Chart of Geology.

Inputed by Ferdinand

Definition

adj. (geol.) pertaining to a division of the Tertiary series the rocks chiefly of fresh and brackish water origin with intercalations of marine beds.

Typed by Gordon