Mesozoic
Adjective

Mesozoic

  1. (geology) Of a geologic era within the Phanerozoic eon that comprises the Triassic, Jurassic and Cretaceous periods from about 230 to 65 million years ago, when life on earth was dominated by reptiles.
Translations Proper noun
  1. (geology) The Mesozoic era.
    • 1883, Joseph Le Conte, Elements of Geology: A Text-book for Colleges and for the General Reader, D. Appleton and Company, New York,
      The whole history of the earth is divided into five eras, with corresponding rock-systems. These are: 1. Archæan or Eozoic1 era, embodied in the Laurentian system; 2. Palæozoic2 era, embodied in the Palæozoic or Primary system; 3. Mesozoic3 era, recorded in the Secondary system; 4. Cenozoic,4 recorded in the Tertiary and Quaternary systems; and, 5. The Psychozoic era, or era of Mind, recorded in the recent system.
Translations


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