Pliocene

a.	1.	(Geol.) Of, pertaining to, or characterizing, the most recent division of the Tertiary age.
n.	1.	(Geol.) The Pliocene period or deposits.

Noun

1.

Pliocene - from 13 million to 2 million years ago; growth of mountains; cooling of climate; more and larger mammals Synonyms: Pliocene epoch

epoch, Pliocene epoch, Tertiary, Tertiary period