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 (sĕn′ə-zō′ĭk, sē′nə-)
Of, relating to, or being the most recent era of geologic time, from about 66 million years ago to the present. The Cenozoic Era 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.
The Cenozoic Era.

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


(ˌsiːnəʊˈzəʊɪk) or




(Geological Science) of, denoting, or relating to the most recent geological era, which began 65 000 000 years ago: characterized by the development and increase of the mammals
(Geological Science) the Cenozoic the Cenozoic era
[C19: from Greek kainos new, recent + zōikos, from zōion animal]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌsi nəˈzoʊ ɪk, ˌsɛn ə-)
1. noting or pertaining to the present era, beginning 65 million years ago, characterized by the ascendancy of mammals. See geologic time.
2. the Cenozoic Era or group of systems.
[1850–55; < Greek kainó(s) recent + -zoic]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


The most recent era of geologic time, from about 65 million years ago to the present. The Cenozoic Era is characterized by the formation of modern continents and the diversification of mammals and plants. 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.Cenozoic - approximately the last 63 million yearsCenozoic - approximately the last 63 million years
Phanerozoic, Phanerozoic aeon, Phanerozoic eon - the period from about 5,400 million years ago until the present
Age of Man, Quaternary, Quaternary period - last 2 million years
Tertiary, Tertiary period - from 63 million to 2 million years ago
Adj.1.Cenozoic - of or relating to or denoting the Cenozoic era
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
According to studies, about 65 million years ago, the Earth experienced a major global extinction event that marks the boundary between the Mesozoic and Cenozoic eras and on a finer scale, the Cretaceous and the Palaeogene.
Among their topics are the provenance and alteration of feldspathic and quartzose sediments in southern Mexico: an application of Krynine's hypothesis on second-cycle arkose, the paleomagnetism and rotation history of the Blue Mountains in Oregon, Late Cenozoic uplift and shortening in the central California Coast Ranges and the development of the San Joaquin Basin foreland, local-to-distance provenance cyclicity of the southern Front Range in central Colorado: insights from detrial zircon geochronology, and Cenozoic basin evolution in the Indus-Yarlung suture zone and High Himalaya.
For lithostratigraphic nomenclature of Mesozoic and Cenozoic we have used the terminology of Afzal et al., (2009) and Shah (2009).
Fangzheng fault depression is a series of narrow and Cenozoic fault basin distributed in the northeast direction in the Tan-lu fault zone, which stratum develops from bottom to top:Cretaceous (K), Paleogene Paleocene Xin'ancun Formation ([E.sub.1]x), Eocene Dalianhe Formation ([E.sub.2]d), Oligocene Baoquanling Formation ([E.sub.3]b: [E.sub.3]b1, [E.sub.3][b.sub.2], [E.sub.3][b.sub.3]), Neogene Fujin Formation (Nf), and the Quaternary (Q) stratum, generally in the direction of the North East 40 [degrees]-50 [degrees], the area is about 1460[km.sup.2].
According to Meilan Solly of the Smithsonian, the earth is "currently situated in the Phanerozoic Eon, Cenozoic Era, Quaternary Period, Holocene Epoch and Meghalayan Age."
The Eocene Epoch is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era.
Each chapter revisits each period such as Precambrian, Palaeozoic, Mesozoic and Cenozoic. An interesting topic is the presence of dinosaurs in the Mesozoic period.
The funs begins in the Discovery Trail at the start of the Cenozoic Era nearly 65 million years ago, where there are more than 20 life-sized species of mammals, the majority of which are animatronic.
It features similar Paleozoic stratigraphic formations and silicic Cenozoic volcanic rocks that host large gold deposits elsewhere in Nevada.
Oil shale deposits range widely in age from the Late Paleozoic to the Cenozoic, and were formed in a variety of depositional environments, including fresh-water, brackish and salt lakes, as well as limnic and coastal swamps, commonly in association with the deposits of coal and gypsum.