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The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link between the archaic world of the tropical Eocene and the more modern ecosystems of the Miocene. [9]
The Rupelian is, in the geologic timescale, the older of two ages or the lower of two stages of the Oligocene Epoch/Series. It spans the time between 33.9 and 27.3 Ma . It is preceded by the Priabonian Stage (part of the Eocene) and is followed by the Chattian Stage.
The Oligocene Epoch, the last epoch during the Paleogene Period of the Cenozoic Era See also the preceding Category:Eocene and the succeeding Category:Miocene Subcategories
The volcanic clastic Ohanapecosh Formation is an early state of cascade volcanism. It has been dated to the middle Oligocene [36 to 28 Ma]. [1] The strata are as much as 3 kilometres (1.9 miles) thick, with exposures visible in more than 400 square kilometres (99,000 acres) of a total area exceeding 700 square kilometres (170,000 acres).
Biological taxa that first appeared during the Oligocene epoch, between 33.9 and 23 million years ago during the Early/Lower Paleogene period See also the preceding Category:Eocene first appearances and the succeeding Category:Miocene first appearances
Oligocene epoch geologic formations, formed during the late Paleogene Period of the Cenozoic Era See also the preceding Category:Eocene Series and the succeeding Category:Miocene Series Subcategories
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Download as PDF; Printable version; In other projects Wikidata item; Appearance. move to sidebar hide. ... Oligocene first appearances (5 C, 12 P) V. Oligocene ...