Paleontologists have uncovered the remains of megaraptor that lived 70 million years ago, making it one of the last carnivorous dinosaur to roam the Earth. Discovered in Argentina, the team found vertebrae, ribs and part of what would have been the dinosaur's chest and shoulder girdle. After a further analysis, they determined the creature was approximately 33 feet in length -the largest megaraptor found to date. Unlike the Tyrannosaurus rex, this lethal dinosaur had extremely long, muscular arms with massive claws at the end that were used to attack prey.