Oligocene
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| Archivo:Oligocene.jpg Restoration of oligocene fauna of North America, by Jay Matternes |
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 ( to ). 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 (oligos, few) and (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.
- Related: Turgai Sea
| Paleos: Oligocene Paleos: Oligocene www.palaeos.com/Cenozoic/Oligocene/Oligocene.htm - Web |
| UCMP Berkeley Oligocene Page UCMP Berkeley Oligocene Page www.ucmp.berkeley.edu/tertiary/oli.html - Web |
| Prehistoric Pictures, in the Public Domain Prehistoric Pictures, in the Public Domain www.copyrightexpired.com/earlyimage/index.html - Web |
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| Oligocene Leaf Fossils Oligocene Leaf Fossils www.paleodirect.com/pl-003.htm - Web |
| Olicgocene Fish Fossils Olicgocene Fish Fossils www.paleodirect.com/f1-001.htm - Web |
| PaleoMap Project: Oligocene PaleoMap Project: Oligocene scotese.com/oligocen.htm - Web |
| Oligocene Microfossils: 300+ images of Foraminifer... Oligocene Microfossils: 300+ images of Foraminifera www.foraminifera.eu/querydb.php?age=Oligocene&aktion=suche - Web |
