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

  • adj. Of, belonging to, or designating the latest era of geologic time, which includes the Tertiary Period and the Quaternary Period and is characterized by the formation of modern continents, glaciation, and the diversification of mammals, birds, and plants. See Table at geologic time.
  • n. The Cenozoic Era.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Of a geologic era within the Phanerozoic eon comprising the Paleogene and Neogene periods from about 65 million years ago to the present, when the continents moved to their current position and modern plants and animals evolved.
  • n. Cenozoic era

from the GNU version of the Collaborative International Dictionary of English

  • adj. Belonging to the most recent division of geological time, including the tertiary, or Age of mammals, and the Quaternary, or Age of man. [Written also cænozoic, cainozoic, kainozoic.] See geology.

from The Century Dictionary and Cyclopedia

  • See Cænozoic.

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

  • adj. of or relating to or denoting the Cenozoic era
  • n. approximately the last 63 million years


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

Greek kainos, new; see ken- in Indo-European roots + -zoic.

from Wiktionary, Creative Commons Attribution/Share-Alike License

ceno- + -zoic, from the Ancient Greek: καινός (kainós, "new") with ζῷον (zōon, "beast").


  • Mostly it comes down to a superficial similarity between certain Cenozoic artiodactyls (like cainotheres) and lagomorphs, and the transverse chewing style and artiodactyl-like ankle structure of lagomorphs.

    Archive 2006-05-01

  • Most of the Cenozoic is the Tertiary, from 65 million years ago to 1.8 million years ago.


  • Mesozoic and the following age, called the Cenozoic, or age of recent animals.

    The Doctrine of Evolution Its Basis and Its Scope

  • While not universally true, and while the Cenozoic has had some significant exceptions to that general rule for several million years at a time, we do not know WHY exactly that correlation exists.

    Wonk Room » Stumped By Science: Michele Bachmann Calls CO2 ‘Harmless,’ ‘Negligible,’ ‘Necessary,’ ‘Natural’

  • And 64 million years after dinosaurs went extinct, modern humans emerged in the Cenozoic era.

    February 2009

  • The eastern part is primarily of volcanic origin covered with sedimentary rock of the Cenozoic period.

    Darién National Park, Panama

  • Phytogeographic analyses indicate that the flora on the páramo had their origins in elements at middle elevations that were created with the first orogenic uplift during the early and middle Cenozoic, subjected to a process of differentiation when they erupted in the new habitats of the high mountains generated by the final uplift of the la Sierra Nevada during the Pliocene and Pleistocene.

    Santa Marta páramo

  • The mountains of Ecoregion 4 are widely underlain by Cenozoic volcanic rocks and have been affected by alpine glaciation.

    Ecoregions of Oregon (EPA)

  • Cenozoic marine and nonmarine sedimentary rocks and alluvial deposits, and Mesozoic granitic and ultramafic rocks.

    Central California Coast (Bailey)

  • Humanity, Wilson says, is leaving the Cenozoic, the age of mammals, and entering the Eremozoic -- the era of solitude.

    We Are Breeding Ourselves to Extinction


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