We Were Wrong About Spinosaurus. Special | 6m 36s Video has Closed Captions | CC. Millions of years ago, dinosaurs ruled the Earth. But underwater it was a totally different world.

The addition gives visitors a glimpse of the largest predatory dinosaur yet discovered via a 46-foot cast of a Spinosaurus skeleton suspended high above the museum's main hall.

Applying novel techniques to a single Spinosaurus skeleton discovered in Morocco, researchers have revealed that this dinosaur was perfectly adapted to an aquatic lifestyle.