Cretaceous period 1
noundomain: time
Princeton WordNet [ver.3.1]
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EnglishDefinition
from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants
Instance_Hypernym
period 4
noun
a unit of geological time during which a system of rocks formed
Part_meronym
Mesozoic 1
noun
from 230 million to 63 million years ago
EnglishPart_holonym
Mesozoic 1
noun
from 230 million to 63 million years ago
