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Related to Paleocene: Paleocene epoch, Oligocene


Of, relating to, or being the epoch of geologic time from 66 to 56 million years ago, the oldest epoch of the Tertiary Period. It is characterized by the formation of the Rocky Mountains and by the appearance of placental mammals. See Table at geologic time.
The Paleocene 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.


(Geological Science) a variant spelling of Palaeocene
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈpeɪ li əˌsin; esp. Brit. ˈpæl i-)

1. noting or pertaining to an epoch of the Tertiary Period, from 65 million to 55 million years ago, a time of mammalian proliferation.
2. the Paleocene 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.


The earliest epoch of the Tertiary Period, from about 65 to 58 million years ago, characterized by the appearance of placental mammals and the formation of the Rocky Mountains and Himalayas. 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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Paleocene - from 63 million to 58 million years ago; appearance of birds and earliest mammals
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.
References in periodicals archive ?
It's one that's still the norm in many subtropical regions, but during the greenhouse spike in the late Paleocene epoch, monsoon climates extended well into what are now temperate latitudes.
A nine-meter thick Paleocene paleosol present in the Las Virgenes Sandstone, Santa Monica Mountains, California, probably represents an ancient soil formed in a tropical climate.
During the earliest part of the Paleocene (Danian Age), the Mississippi Embayment extended into southern Illinois.
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.
Historically, the mass extinction caused by a 7-14 [degrees] C increase in ocean temperatures at the end of the Paleocene could have been caused by a one trillion ton release, a fraction of the current stocks.
THESE STRANGE-LOOKING rocks were formed as water and wind eroded the soft sandstone, siltstone, and mudstone layers that were originally deposited here about 65 million years ago during the Paleocene Epoch.
Analyses of foraminiferal assemblages contained in eight core samples reveal the paleoenvironmental history of the Paleocene Gulf of Mexico as recorded by the TLM depositional sequence.
Among the many achievements was a new understanding of the early Cenozoic period of climate change known as the Paleogene era, which is further subdivided into three epochs, the Paleocene (57 to 65 million years ago), Eocene (35 to 57 million years ago), and Oligocene (25 to 35 million years ago).
With the exception of foraminifera from other Kemp Clay localities and smaller concentrations of abnormal specimens recovered from Texas Turonian, Cenomanian, and Paleocene rocks, abnormal foraminifera from the Brazos Kemp Clay are found in a much greater percentage than I have encountered in other Cretaceous and Tertiary faunas in Texas.
The secondary target in the Paleocene Heimdal Formation was found to be absent.