slovodefinícia
Cretaceous period
(gcide)		Cretacic \Cre*tac"ic\
[Webster 1913 Suppl. +PJC]

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, and at the end of which the dinosaurs died out.
See Cretaceous.
[1913 Webster +PJC]
cretaceous period
(wn)		Cretaceous period
n 1: from 135 million to 63 million years ago; end of the age of
reptiles; appearance of modern insects and flowering plants
[syn: Cretaceous, Cretaceous period]
podobné slovodefinícia
cretaceous period
(wn)		Cretaceous period
n 1: from 135 million to 63 million years ago; end of the age of
reptiles; appearance of modern insects and flowering plants
[syn: Cretaceous, Cretaceous period]

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