Standing two-stories tall, weighing 65 tons, and measuring 85-feet long, the 77-million-year-old Dreadnoughtus schrani is easily one of the largest dinosaurs ever found. The Dreadnoughtus is being detailed today for the first time by a group of researchers led from Drexel University, and its finders say that it currently holds the title for largest dinosaur — at least, largest of any dinosaur that has been scientifically reported and can be properly measured.