• (geology) Of or pertaining to the second period of the Mesozoic era, a time still dominated by dinosaurs.
  • Of or pertaining to the people or region near the Jura Mountain Range of Europe.

Proper noun

  • (geology, paleontology) The period from 201.3±0.2 to 145 million years ago, after the Triassic and before the Cretaceous; the geologic systems of this period.

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