Meaning of Oligocene


Pronunciation: (ol'i-gō-sēn"), [key]
— Geol. Geol.
  1. noting or pertaining to an epoch of the Tertiary Period, occurring from 40 to 25 million years ago. See table under
  1. the Oligocene Epoch or Series.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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