During the days of North America's vast interior seaway, marine reptiles like the mosasaurs were predators at the top of their food chain. The teeth of Prognathodon were well suited for eating a variety of prey animals which were abundant in the inland sea such as large fish, molluscs and sea turtles. Our specimen was discovered in the Mancos shale of Souther Colorado, not far from the native american sites at Mesa Verde National Park.
