By looking at mosasaurs' skulls, we can deduce information about how they lived, their sensory capacities, their intelligence, and more. For example, the sharp, backwards-curved teeth, like those of the Mosasaurus hoffmanni, tell us about their diet: they were carnivores. The extremely mobile jaws allowed them to swallow large prey that were held in place by the teeth in the palate and could not escape once caught.