Oligocene


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Related to Oligocene: Pleistocene, Pliocene, Paleocene, Miocene, Eocene

Ol·i·go·cene

 (ŏl′ĭ-gō-sēn′, ō′lĭ-)
adj.
Of, relating to, or being the epoch of geologic time from about 34 to 23 million years ago, the third epoch of the Tertiary Period. It is characterized by further development of modern mammals, including the rise of the true carnivores and their gradual replacement of the creodonts. See Table at geologic time.
n.
The Oligocene Epoch.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Oligocene

(ˈɒlɪɡəʊˌsiːn; ɒˈlɪɡ-)
adj
(Geological Science) of, denoting, or formed in the third epoch of the Tertiary period, which lasted for 10 000 000 years
n
(Geological Science) the Oligocene the Oligocene epoch or rock series
[C19: oligo- + -cene]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

Ol•i•go•cene

(ˈɒl ɪ goʊˌsin)
adj.
1. noting or pertaining to an epoch of the Tertiary Period, occurring from 40 million to 25 million years ago.
n.
2. the Oligocene Epoch or Series.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

Ol·i·go·cene

(ŏl′ĭ-gō-sēn′)
The third epoch of the Tertiary Period, from about 37 to 24 million years ago, characterized by the continued development of modern mammalian groups and the rise of the first cats, dogs, and related mammals. See Chart at geologic time.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Pleistocene, Pliocene, Miocene, Oligocene - Pleistocene means "most recent," Pliocene means "more recent," Miocene means "moderately recent," and Oligocence means "but a little recent."
See also related terms for recent.
Farlex Trivia Dictionary. © 2012 Farlex, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Oligocene - from 40 million to 25 million years agoOligocene - from 40 million to 25 million years ago; appearance of sabertoothed cats
Tertiary, Tertiary period - from 63 million to 2 million years ago
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

Oligocene

[ˈɒlɪgəʊsiːn]
A. ADJoligocénico
B. N the Oligoceneel Oligoceno
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
References in classic literature ?
That you and I exist today must be due to the preparedness of some shaggy anthropoid of the Oligocene. Of course the apes of Kerchak were always prepared, after their own way--Tarzan had merely suggested a new and additional safeguard.
The Oligocene and Miocene comprise the most important phases in the long-term, step-wise global cooling that over the course of the Cenozoic, transformed Greenhouse Earth into Icehouse Earth.
The Papyrus discovery reinforces the attractiveness of other prospects already identified within the West El Burullus concession, including larger targets at the deeper Miocene and Oligocene levels.
Erycine boid snakes are well represented in the Late Oligocene and Early Miocene of North America.
The earliest calcareous tubes in cirratulids (Diplochaetetes mexicanus Wilson, 1986) are known from the Oligocene of Mexico (Fischer et al.
Figure 3 shows the vertical distribution of echinoderms.TheexistenceofsomeEchinoderms, Echinodiscus balestrai and Clipeaster folium MICHELIN, in the lower part of the formation gives it an age of Medium-Superior Oligocene.
The caviomorphs were the first rodents on the South America, being known as fossils since the Late Oligocene. Among these rodents, the superfamily Cavioidea displays a great diversity regarding behavior, habitat utilization, morphology and different life histories.
Benthic foraminiferal assemblages recovered from sidewall core samples in the Oligocene section are unusually low in species diversity, though high in numbers of specimens.
The black oak has been around at least 24 million years, so its fossilized leaves may provide information on elevation changes since the end of the Oligocene period.
As the shore receded, rivers extended themselves across the Coastal Plain arid some may have interconnected inn the Paleocene and Eocene before the next extreme highstand in the Oligocene. The Oligocene highstand isolated the upland basins from one another and greatly reduced the river systems' area, presumably leading to high rates of extinction and speciation.