| 1. |
(adjective) of or relating to the Cretaceous geologic era; "cretaceous rocks" |
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| 2. |
(adjective) abounding in chalk |
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| 3. |
(noun) 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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Synonyms: Cretaceous period |
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Related Words: geological period, period |
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