What is Oligocene?

  • (noun): From 40 million to 25 million years ago; appearance of sabertoothed cats.
    Synonyms: Oligocene epoch


The Oligocene (symbol OG) is a geologic epoch of the Paleogene Period and extends from about 34 million to 23 million years before the present (33.9±0.1 to 23.03±0.05 Ma). As with other older geologic periods, the rock beds that define the period are well identified but the exact dates of the start and end of the period are slightly uncertain. The name Oligocene comes from the Greek ὀλίγος (oligos, few) and καινός (kainos, new), and refers to the sparsity of additional modern mammalian species of fauna after a burst of evolution during the Eocene. The Oligocene follows the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period.

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Some articles on Oligocene:

... the "stout-legged flamingos" (Borgloon Early Oligocene of Hoogbutsel, Belgium) Palaelodus (Middle Oligocene -? Middle Pleistocene) Megapaloelodus (Late Oligocene - Early ...
List Of Fossil Birds - Neornithes - Phoenicopteriformes
... unresolved Phoeniconotius (Etadunna Late Oligocene/Early Miocene of Lake Pitikanta, Australia) Palaelodidae – Swimming-flamingos Adelalopus (Borgloon Early Oligocene of Hoogbutsel ... – Late Miocene) Extant genera present in the fossil record Phoenicopterus (middle Oligocene – Recent) ...
Mastotermes - Fossil Record
... bournemouthensis (Late Eocene of England) Mastotermes gallica (Early Oligocene of France) Mastotermes anglicus (Middle Oligocene of England) Mastotermes electromexicus (Late ...
... suffered a heavy loss of genera during the Eocene-Oligocene extinction event, but some species survived into the Oligocene ... The last archaeocete, which was probably a basilosaurid, became extinct in the Oligocene ...