It\'s the stuff of nightmares. It\'s 9 feet longer than the world\'s largest Tyrannosaurus rex, it weighs 6 tons and it has curved, blade-like claws.
Photo by Mark Thiessen/National Geographic A life-size flesh replica of Spinosaurus is on display outside of National Geographic's headquarters in Washington, D.C. until April 12, 2015.
Photo by Mark Thiessen/National Geographic A life-size flesh replica of Spinosaurus is on display outside of National Geographic's headquarters in Washington, D.C. until April 12, 2015.
Photo by Rebecca Hale/National Geographic. The "Spinosaurus: Lost Giant of the Cretaceous" exhibition at the National Geographic Museum in Washington, D.C.
Photo by Rebecca Hale/National Geographic. The "Spinosaurus: Lost Giant of the Cretaceous" exhibition at the National Geographic Museum in Washington, D.C.
Photo by Rebecca Hale/National Geographic. The "Spinosaurus: Lost Giant of the Cretaceous" exhibition at the National Geographic Museum in Washington, D.C.
Photo by Mark Thiessen/National Geographic. The "Spinosaurus: Lost Giant of the Cretaceous" exhibition at the National Geographic Museum in Washington, D.C.
Photo by Mark Thiessen/National Geographic. The "Spinosaurus: Lost Giant of the Cretaceous" exhibition at the National Geographic Museum in Washington, D.C.
Photo by Mark Thiessen/National Geographic. The "Spinosaurus: Lost Giant of the Cretaceous" exhibition at the National Geographic Museum in Washington, D.C.
Photo by Mark Thiessen/National Geographic. The "Spinosaurus: Lost Giant of the Cretaceous" exhibition at the National Geographic Museum in Washington, D.C.
Photo by Mark Thiessen/National Geographic. The "Spinosaurus: Lost Giant of the Cretaceous" exhibition at the National Geographic Museum in Washington, D.C.
Photo by Mark Thiessen/National Geographic. The "Spinosaurus: Lost Giant of the Cretaceous" exhibition at the National Geographic Museum in Washington, D.C.
