Spinosaurus was one of the biggest predators of its time, but was it big enough to take down the Tyrannosaurus rex? Adding to the size of Spinosaurus was its nearly 5-foot sail that ran along the ...

Spinosaurus was unlike any other carnivorous dinosaur ever discovered. Larger than Tyrannosaurus rex, it hunted in rivers and wetlands across ancient North Africa. Its long snout, conical teeth, and ...