The dinosaur world wasn't the same look then, it didn't have Africa, Asia and so on. Instead, there were different continents. In the Triassic period there was one single wet and warm continent, Pangaea. In the Jurassic period Pangaea had split into two continents, Gondwana and Laurasia. Finally, in the Cretaceous period, the continents had drifted apart and were almost in the positions they're in today.