Scientists may have found the world's largest dinosaur footprint, measuring at nearly 5.6 ft, on a remote part of Australia's northwestern coastline. The track belonged to a sauropod, a long-necked herbivore. But the footprint was just one of a series of amazing finds in an area Salisbury dubbed "Australia's Jurassic Park." Twenty-one different dinosaur tracks were discovered across the Dampier Peninsula in the unprecedented" find, the University of Queensland said in a news release. The rocks in which the footprints were found date back between 127 and 144 million years.