It was characterized by the heyday of the dinosaurs and the appearance of mammals and birds , according to the Royal Spanish Academy (RAE). In addition, at this time there was the split of Pangea in the Laurasia and Gondwana continents.
It is after the Triassic and before the Cretaceous , and is divided into Inferior (from 207 to 186 million years ago), Middle (from 186 to 164 million years) and Superior (from 164 to 145 million years ago).
During the Jurassic, forests begin to spread over the entire earth's surface, and the climate softens, to the point that there is no evidence of polar ice in this period . Although grasses and hardwood trees are still absent, the first conifers and different types of palms and ferns appear.
As for the fauna, frogs appear and several species of dinosaurs increase in size, such as Allosaurus or Diplodocus . Small birds also begin to open their holes, as well as many fish and reptiles.
