Colossal 'Dreadnoughtus' Dinosaur Discovered In Argentina Was Seven Times Heavier Than T Rex

The fossilized remains of a colossal dinosaur discovered in Argentina marks the most complete skeleton of a titanosaur ever unearthed. The long-necked and herbivorous Dreadnoughtus schrani, whose name means "fears nothing," measured 85 feet (26 meters) in length from the tip of its small head to the end of its tail and weighed 65 tons - about seven times heavier than Tyrannosaurus rex, said Drexel University paleontologist Kenneth Lacovara, who led the excavation.