The period 190-135 million years ago. Named for the Jura mountains. This era is fodder for Jurassic Park, etc. A National Enquirer from the era would read:

Giant dinosaurs stalk the Earth!
Gondwanaland ripped apart!
Elvis sighted in 7-11!

Back: Triassic On: Cretaceous

Ju*ras"sic (?), a. Geol.

Of the age of the middle Mesozoic, including, as divided in England and Europe, the Lias, Oolite, and Wealden; -- named from certain rocks of the Jura mountains.

n.

The Jurassic period or formation; -- called also the Jura.

© Webster 1913.