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Cretaceous
01
from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants
Grammatical Information
Animacy status
Inanimate
Plural form
cretaceous periods
cretaceous
01
relating to the period between approximately 146 and 65 million years ago, when dinosaurs lived (until their extinction)
Grammatical Information
Composition
Simple
proper
relational
ungradable
02
abounding in chalk
