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noun
A major division of geological time; an era is usually divided into two or more periods.
synonym: era.
is a specific kind of: geologic time, geological time.
instances of which are: Age of Mammals, Cenozoic, Cenozoic era | Age of Reptiles, Mesozoic, Mesozoic era | Paleozoic, Paleozoic era.
has as a part: geological period, period.
is a part of: aeon, eon.
Dutch: periode, era, tijdrekening, tijdperkPolish: era
Find more on geological era elsewhere: etymology - rhymes - Wikipedia.
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