If you have seen the movie Jurassic World, it is very likely you are familiar with the Mosasaurus. Remember the animal that jumped out of the ocean to attack another dinosaur flying through the air and even a shark in a Seaworld-like environment? If you do, that was a Mosasaurus.
They were giant reptiles that could choose to swallow prey whole or cut them up with their amazing teeth. The Mosasaurus was bigger than many of the biggest land dinosaurs known. They were also quite different from other reptiles. Scientists found that baby Mosasaurus spent their early life in the open ocean, making some believe that the species gave birth to live young and not via eggs.