Spinosaurus

All right, everybody says, "T-Rex is the biggest land carnivore" well, there's a couple things bigger than it. Like the ginormous giganotosaurus (and it's a land carnivore too). And there's even bigger than giganotosaurus: there's carcharodontosaurus. But the biggest of all is the spinosaurus! It's called that because it has a sail with some spreaded out skin and spines. It could be for many things - a fishing lure, a use to stay cool, or maybe to look cool. And here's its big weapon: its enourmous claws. Oh yup, it can do some bad damage to its rivals. And here's another thing about it, it has unusual teeth. Compared to T-Rex, the spinosaurus' teeth are shaped like cones while T-Rex's are shaped like steak knives.

(image from photo-dictionary.com)