Shark Attacks Mosasaur!

"...There's always a bigger fish."  --Qui-Gon Jinn

Although the picture would have you imagine otherwise, the gator-looking reptile known as the mosasaur ruled the oceans of the late Cretaceous Period.  They consumed their prey like snakes, by swallowing it whole.  Hunted by surprise and acceleration over short distances, like the cheetah.  They even began to invade freshwater environments like rivers before the mass extinction.  Certain species could be well over 50 feet long.  They may have hunted certain sharks out of existence, due to the sharks' slow baby-making cycles.  Just like how humans have done today.  Mosasaur remains have been found all over the world, from the Netherlands, to Kansas, to Antarctica!