(Paleon.) A genus of gigantic American Jurassic dinosaurs, having large cavities in the bodies of the dorsal vertebræ.
Camarasaurus
Camarasaurus
[‚ka·mə·rə′sȯr·əs] (paleontology) A herbivorous sauropod dinosaur, 60-feet (18 meters) long and weighing 20 tons, from the Late Jurassic Period that had a very long neck and tail.