Oligocene definition

  • adjective:
    • Of or belonging to the geologic time, rock series, or sedimentary build up regarding the third epoch of the Tertiary stage, characterized by futher development of modern mammalian fauna, including the rise of the real carnivores and their gradual replacement for the creodonts. See Table at geologic time.
    • Of a geologic epoch inside the Paleogene duration from about 34 to 23 million years back; marked by the quick evolution in a warm weather.
    • Of, regarding, or designating, specific strata which take an intermediate position between your Eocene and Miocene periods.
  • noun:
    • The Oligocene Epoch or its system of deposits.
    • from 40 million to 25 million years back; look of sabertoothed kitties
  • proper-noun:
    • The Oligocene epoch.
  • others:
    • In geology, a division of Tertiary series, including groups previously classed to some extent as Upper Eocene plus component as Lower Miocene.

Related Sources

  • Sentence for "Oligocene"
    • This differs chiefly from Lyell's classification…
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  • Cross Reference for "Oligocene"
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