it’s a question as old as time would you rather go up against a T-rex or a megalodon both animals were the apex predators of their time both would eat just about anything they could get their claws and Jaws on and both could tear through flesh and Bone megalodons were about 65 ft long here’s a look at what their jaws look like and T-rexes grew to be about 40 ft long the Megalodon could bite down with about 30,000 lb of force and the T-Rex had somewhere around 8,000 to 12,000 lb of force behind t