Jurassic

1. adjective

a) Of or pertaining to the second period of the Mesozoic era, a time still dominated by dinosaurs.

His father squinted at the skeleton. “What is it, Jurassic?” “Jeez. No. Cretaceous.” “Cretaceous? Whats the difference between Cretaceous and Jurassic?” “Only about a hundred million years,” Tim said. “Cretaceous is older?” “No, Dad, Jurassic is older.”

b) Of our pertaining to the the people or region near the Jura Mountain Range of Europe.

The Jurassic, the Spanish and the Italian federations and sections of the International Working Mens Association, as also the French, the German and the American anarchist groups, were for the next years the chief centres of anarchist thought and propaganda.

2. noun

The period from 200 to 146 million years ago, after the Triassic and before the Cretaceous; the geologic formations of this period.

[p 108] Like the Forest Marble Beds in the Middle Jurassic, the Purbeck Beds of the Upper Jurassic are deltaic or estuarine in origin, so as well as mammals they contain small, presumably freshwater, crocodiles and the first indisputable lizards.