Here we see Camarasaurus footprints coming across the field of view. The Camarasaurus makes are sharp right turn coming toward the camera position. It was being chased by an Allosaurus, a meat eating dinosaur that could run 30 miles an hour. A Camarasaurus is also known as a Brontosaurus and this one weighed about 18 tons. The Allosaurus weight about 1.5 to 4 tons. There are two set of Allosaurus tracks so they hunted in groups, interesting. One of the Allosaurus tracks had uneven space between steps which indicates a leg injury to one of the Allosaurus. They no doubt jumped the Camarasaurus and had dinner.