Tyrannosaurus rex and Megalodon didn't live at the same time, and even more, one lived on land and the other in the ocean. But nonetheless, they both ruled their ecosystems at the very top of the ...

megalodon, often called simply “megalodon ... one of the Smithsonian’s Curators of Vertebrate Paleontology. “Even Tyrannosaurus rex doesn’t come close to that amount of pressure ...

In fact, a T-rex would have been a quick snack for megalodon. Its head would have easily fit inside the gargantuan shark's mouth.

Watch the video above to see how big the megalodon's tooth compares to that of a great white shark. You can also see how big it is in the photo below! Which has a stronger bite? A T-Rex or the ...