Fossils and dinosaurs aplenty. It's said North Dakota once was a tropical paradise complete with giant lakes and the giant fish that used to swim in them. There is proof that other giants used to roam North Dakota in prehistoric times and they are being uncovered all the time. Dinosaurs literally left their footprints all over this state and their skeletons now figure prominently in many museums. Discover North Dakota's prehistoric past with these fun fossil sites, and dinosaur attractions.