Mosasaurus ("lizard of the Meuse River") is the type genus of the mosasaurs, an extinct group of aquatic squamate reptiles. It lived from about 82 to 66 million years ago during the Campanian and Maastrichtian stages of the Late Cretaceous.
Mosasaurus
Best Marine Reptile
for Best Marine Reptile in Best & Worst of Dinosaurs
Suggested by tomzillawash3r3
Dinosaurs are the coolest things on the planet! Which dinosaur both real and a work of fiction were the best and worst?
