HyperDic: cretaceous_period

English > 1 sense of the expression Cretaceous period:
NOUNtimeCretaceous period, Cretaceousfrom 135 million to 63 million years ago
English > Cretaceous period: 1 sense > noun 1, time
MeaningFrom 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants.
Instance ofperiod, geological periodA unit of geological time during which a system of rocks formed
Part ofMesozoic, Mesozoic era, Age of ReptilesFrom 230 million to 63 million years ago
Spanishcretáceo, Cretáceo, Cretácico, cretázico

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