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Definition of Cretaceous period
1. Noun. From 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants.
Exact synonyms: Cretaceous
Group relationships: Age Of Reptiles, Mesozoic, Mesozoic Era
Generic synonyms: Geological Period, Period
Derivative terms: Cretaceous
Group relationships: Age Of Reptiles, Mesozoic, Mesozoic Era
Generic synonyms: Geological Period, Period
Derivative terms: Cretaceous
Lexicographical Neighbors of Cretaceous Period
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