During the Late Jurassic, Apatosaurus, Camarasaurus, and Diplodocus were the most common sauropod dinosaurs in the western United States. Dinosaur Hall presents the complete skeletons of all three.

The skull of an adult Camarasaurus, like those of other sauropods, is quite small relative to overall body size. Striking differences between the skull and teeth of Camarasaurus and those of other contemporary sauropods such as Diplodocus indicate different feeding habits for these giant plant eaters. The thick, spoon-shaped teeth of Camarasaurus may have allowed it to feed on plant material that was much more coarse.

Also represented in Dinosaur Hall is a young Camarasaurus. The skeleton is still partially embedded in original sandstone, and is one of the most complete sauropod dinosaur skeletons ever found. The animal had reached only about two-fifths the size of an adult Camarasaurus.