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noun. from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants.
Rhymes with Cretaceous
How do you pronounce cretaceous?
Pronounce cretaceous as krɪˈteɪʃɪs.
US - How to pronounce cretaceous in American English
UK - How to pronounce cretaceous in British English