Not much is known about the 50-plus-foot shark that once ruled the seas for 25 million years, as just about all that remains of it are its fossilized 7-inch-teeth. But paleontologists are convinced Megalodon would have been above the T. rex on the food chain.
“T. rex wouldn’t have a chance against this thing,” Ciampaglio told the Discovery Channel. “T. rex’s head would fit in this guy’s mouth.”
Source: The Huffington Post