Definitions for oligoceneˈɒl ɪ goʊˌsin
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Random House Webster's College Dictionary
Ol•i•go•ceneˈɒl ɪ goʊˌsin(adj.)
noting or pertaining to an epoch of the Tertiary Period, occurring from 40 million to 25 million years ago.
Category: Geology
(n.)the Oligocene Epoch or Series.
Category: Geology
Princeton's WordNet
Oligocene, Oligocene epoch(noun)
from 40 million to 25 million years ago; appearance of sabertoothed cats
Wiktionary
Oligocene(Adjective)
Of a geologic epoch within the Paleogene period from about 34 to 23 million years ago; marked by the rapid evolution in a warm climate.
Oligocene(ProperNoun)
The Oligocene epoch.
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