The Jurassic

The Jurassic Period would mark the beginning of the dinosaurs' dominance of terrestrial Earth, but also the end of Pangea. Reptiles continued their dominance of the air, land, and sea during the Jurassic, but also have to deal with a world that was literally shifting beneath their feet. The Jurassic would also see the appearance of the first true birds and mammals, and for once, wouldn't end with a mass extinction.