Length: 60 feet (18 meters)
Camarasaurus was probably the most common sauropod dinosaur of the Late Jurassic Morrison Formation in North America. This large, 25-ton plant-eater was strong and massive, with powerful legs, a strong neck and tail, and a rounded head. Deep pockets or chambers in the vertebrae (bones of the spine) of Camarasaurus lightened the skeleton without giving up strength. It is also how