Cole, Aileen (2012) A comprehensive introduction to the oligocene epoch and events. The English Press, Delhi, India. ISBN 9788132345855
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Abstract
The Oligocene is a geological 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 geological 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 ókiyoç (oligos, few) and karvóç (kainos, new) and refers to the sparsity of additional modern mammalian faunas 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. The Oligocene is often considered an important time of transition, a link between "[the] archaic world of the tropical Eocene and the more modern-looking ecosystems of the Miocene." Major changes during the Oligocene included a global expansion of grasslands and a regression of tropical broad leaf forests to the equatorial belt. I The start of the Oligocene is marked by a major extinction event, a faunal replacement of European with Asian fauna except for the endemic rodent and marsupial families called the Grande Coupure. The Oligocene - Miocene boundary is not set at an easily identified worldwide event but rather at regional boundaries between the warmer late Oligocene and the relatively cooler Miocene.
| Item Type: | Book |
|---|---|
| Subjects: | Q Science > QH Natural history |
| Divisions: | Electronic Books |
| Depositing User: | Esam @ Hisham Muhammad |
| Date Deposited: | 12 Feb 2023 06:47 |
| Last Modified: | 12 Feb 2023 06:47 |
| URI: | http://odlsystem2.utm.my/id/eprint/3973 |
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