adj. cretaceous, pertaining to the Cretaceous era (Geology)

adj. cretaceous, chalky; like chalk; pertaining to the Cretaceous era (Geology)

adj. cretaceous, chalky; pertaining to the Cretaceous era (Geology)

(adj.) = Cretaceous.
Ex: This site is part of a large geographical zone called the Edwards Plateau and it primarily consists of Cretaceous rock.
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* Cretáceo, el = Cretaceous period, the.

cretaceus, cretacea, cretaceum
adj. resembling chalk or pipe-clay; chalk-like, creataceous (L+S);