Spinosaurus has a large sail, Giganotosaurus had to hunt the largest land-animal to ever walk on earth, and Carcharodontosaurus had as many teeth as a shark.

• 棘龙有巨大的背鳍，巨龙不得不捕食有史以来陆地上最大的动物，鲨齿龙拥有象鲨鱼一样多的利齿。