Cenozoic era

Other forms: Cenozoic eras

Definitions of Cenozoic era
  1. noun
    the current geologic era, starting about 66 million years ago; the current Phanerozoic era
    synonyms: Age of Mammals, Cenozoic
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    example of:
    era, geological era
    a major division of geological time; an era is usually divided into two or more periods
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