cretaceous
has definitions from the field of geology
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1 |
[ adjective ] (geology) of or relating to the Cretaceous geologic era
Examples "cretaceous rocks" |
2 |
[ adjective ] abounding in chalk
Related terms |
3 |
[ noun ] (geology) from 63 million to 135 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants
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