Supermassive Dinosaur Would Have ‘Feared Nothing’

Researchers uncovered the fossilized bones of a dinosaur called Dreadnoughtus schrani, which had a 30-foot-long tail and weighed an estimated 65 tons. Paleontologist Kenneth Lacovara discusses the diverse group of Titanosaurs—which might have been the largest land creatures to roam the earth—and examines how this particular dino could have moved around the landscape.