Cretaceous

[Cre*ta·ceous]

Of or relating to or denoting the third period of the Mesozoic era

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Having the qualities of chalk;abounding with chalk; chalky; as, cretaceous rocks and formations. See Chalk.

Noun
from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants

Adjective
of or relating to the Cretaceous geologic era; "cretaceous rocks"

Adjective
abounding in chalk

a.
Having the qualities of chalk; abounding with chalk; chalky; as, cretaceous rocks and formations. See Chalk.

Cretaceous

Cre*ta"ceous (kr?-t?"sh?s), a. [L. cretaceus, fr. creta chalk. See Crayon.] Having the qualities of chalk;abounding with chalk; chalky; as, cretaceous rocks and formations. See Chalk. Cretaceous acid, an old name for carbonic acid. -- Cretaceous formation (Geol.), the series of strata of various kinds, including beds of chalk, green sand, etc., formed in the Cretaceous period; -- called also the chalk formation. See the Diagram under Geology. -- Cretaceous period (Geol.), the time in the latter part of the Mesozoic age during which the Cretaceous formation was deposited.

Having the qualities of chalk;abounding with chalk; chalky; as, cretaceous rocks and formations. See Chalk.

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Usage Examples
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