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Paleocene Syllabification: Pa·le·o·cene
Pronunciation: /ˈpālēəˌsēn/

Definition of Paleocene in English:


1Of, relating to, or denoting the earliest epoch of the Tertiary period, between the Cretaceous period and the Eocene epoch.
Example sentences
  • Terrestrial deposits contain fossils ranging from Paleocene leaf imprints to Cretaceous dinosaur remains.
  • Initiation of a cold, upwelling current off the west coast of South America dates back to latest Cretaceous to earliest Palaeocene times.
  • This trend is evident at a coarse scale in a comparison of the combined rarefaction curves for sites from the uppermost 15 m of the Cretaceous against all Paleocene sites.
1.1 (as noun the Paleocene) The Paleocene epoch or the system of rocks deposited during it.

The Paleocene epoch lasted from 65 million to 56.5 million years ago. It was a time of sudden diversification among the mammals, probably as a result of the mass extinctions (notably of the dinosaurs) that occurred at the end of the Cretaceous period (see Cretaceous-Tertiary boundary)


Late 19th century: from paleo- (relating to prehistoric times) + Greek kainos 'new'.

Definition of Paleocene in:
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