Mesozoic

English

meso- +‎ -zoic

Mesozoic (comparative more Mesozoic, superlative most Mesozoic)

(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.

of era from 230 to 65 milion years ago

Mesozoic

(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.
- 2012, Chinle Miller, In Mesozoic Lands: The Mesozoic Geology of Arches and Canyonlands National Parks, Kindle edition:
  The Mesozoic landscape of southeastern Utah can tell us much about the past, and it's one of the most intriguing and beautiful landscapes on Earth.

Mesozoic era