Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of or belonging to the geologic time, rock series, or sedimentary deposits of the first epoch of the Tertiary Period, marked by the appearance of placental mammals and continental collisions leading to the formation of the Rocky Mountains and the Himalayas. See Table at geologic time.
  • n. The Paleocene Epoch or its system of deposits.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Of or pertaining to a geologic epoch within the Paleogene period from about 65 to 56 million years ago; marked by the rise of the first large mammals in a tropical climate.
  • n. The Paleocene epoch.

from The Century Dictionary and Cyclopedia

  • n. In geology, a term proposed by Schimper and Von Koenen, and adopted by many geologists, to designate those lowermost beds of Tertiary age whose fauna differs from that of the typical Eocene as widely as does the latter from that of the Oligocene.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. from 63 million to 58 million years ago; appearance of birds and earliest mammals

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From paleo- + -cene

Examples

  • He said the species lived during a period of abrupt global warming of about 5 degrees Celsius known as the Paleocene-Eocene Thermal Maximum.

    Latest News - UPI.com

  • The global warming of 55 million years ago, known as the Paleocene/Eocene Thermal Maximum (PETM), emerged in less than 5,000 years, an instantaneous blip on geological time scales.

    Sound Politics: Please, no jokes about "global cooling"

  • For some years, scientists have known that a massive release of carbon into the atmosphere caused the ancient global warming event known as the Paleocene-Eocene Thermal Maximum PETM that began about 55 million years ago.

    Unthreaded « Climate Audit

  • Scientists have been keen to unlock the mysteries of the Arctic when this last happened – an interval known as the Paleocene/Eocene thermal maximum, or PETM.

    Unthreaded « Climate Audit

  • This time interval is called the Paleocene - Eocene Thermal Maximum (PETM).

    WN.com - Articles related to Global warming - It's already happening

  • A similarly massive release of carbon accompanied an extreme period of global warming 55 million years ago known as the Paleocene-Eocene Thermal Maximum (PETM).

    Mongabay.com News

  • Rohrabacher was referencing a period known as the Paleocene-Eocene […] frank67 Says:

    Think Progress

  • Presumably, Rohrabacher was referencing a period known as the Paleocene-Eocene Thermal Maximum.

    Think Progress

  • The PETM (Paleocene-Eocene Thermal Maximum) could not possibly have been caused by dinosaur flatulence (duh) because dinosaurs were already extinct by the Cenozoic Era, of which the Paleocene is the first part - the Mesozoic-Cenozoic extinction was something like 10 to 15 million years before the PETM.

    Think Progress

  • The middle horizon is called Paleocene and is 2500 meters below the bottom of the sea.

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