Massive dinosaur 'Dreadnoughtus' discovered in Argentina

Scientists have announced the discovery of a 65 tonne dinosaur in Argentina that was one of the largest dinosaurs to ever walk the Earth. Believed to have existed about 77 million years ago, Dreadnoughtus Schrani weighed more than a Boeing 737 jet and was longer than a basketball court. Ben Gruber has more. Credit to Reuters. Courtesy Drexel University, Kenneth Lacovara, Jennifer Hall and Mark A. Kingler.