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Cretaceous

adjective
 
 
/krɪˈteɪ.ʃəs/ US  /kretˈeɪ-/

Definition

from or referring to the period of geological time between around 144 and 65 million years ago, in which plants with flowers first appeared: the Cretaceous age/period Cretaceous rocksGeology - general words the Cretaceous
 
 
noun
the Cretaceous periodGeology - general words
(Definition of Cretaceous adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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