HyperDic: geological_era

English > 1 sense of the expression geological era:
NOUNtimegeological era, eraa major division of geological time
English > geological era: 1 sense > noun 1, time
MeaningA major division of geological time; an era is usually divided into two or more periods.
InstancesCenozoic, Cenozoic era, Age of Mammalsapproximately the last 63 million years
Mesozoic, Mesozoic era, Age of ReptilesFrom 230 million to 63 million years ago
Paleozoic, Paleozoic eraFrom 544 million to about 230 million years ago
Part ofeon, aeonThe longest division of geological time
Partsperiod, geological periodA unit of geological time during which a system of rocks formed
Broadergeological time, geologic timeThe time of the physical formation and development of the earth (especially prior to human history)
Spanishépoca, era geológica, era, período
Catalanèpoca, era

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