Earth Geology Geologic Time Scale Jurassic Period

Jurassic Period

The Jurassic time period lasted from 208 to 146 million years ago, a time span of 62 million years. The term Jurassic was first used in the 1830s to describe a sequence of rocks in the Jura Mountains in Switzerland. These Jurassic rocks were defined based on a particular type of fossil assemblage contained within them. They are located above the rocks of the Triassic System and below the rocks of the Cretaceous System.


 
back move through time forward