Camarasaurus was one of the smaller species of dinosaurs. Brachiosaurus, Diplodocus, and Apatosaurus are some of its larger relatives. These herbivores were common Jurassic dinosaurs. All walked on four legs, supporting immensely long necks and tails.

At only 18 metres in length, Camarasaurus was shorter than many sauropods. It was one of the more common Jurassic dinosaurs in North America. Many young specimens, dead before they reached adulthood, have been discovered.