Sunday, September 9, 2012

Jurassic (Geological Period)

The Jurassic was the second geological period of the Mesozoic era, stretching from 180 to 135 million years ago, the others being the Triassic and Cretaceous. It is characterized by the presence of dinosaurs and conifers. The Jurassic is named after the French Jura region, rich in limestone and shale.