As you can see from the map, Dinosaur Land just vaguely resembles Earth. Taking the Pangaea theory into account, the different continents may actually be underdeveloped modern continents. So, when Mario and Luigi save the princess and defeat Bowser, they inadvertently cause the extinction of the dinosaurs. * Not all of the dinosaurs. The Yoshi Star Galaxy in SMG2 is a whole dinosaur-themed galaxy. Plus, explain why Yoshi is like in EVERY NEW MARIO GAME. He's a dinosaur. So why isn't he extinct?