A large, herbivorous quadruped, Camarasaurus was among the most common of the giant sauropod dinosaurs found in the Jurassic Period in North America. With a name that means “chambered lizard,” this dinosaur was named for its partly hollow vertebrae, and reached up to a massive 60 feet in length.
Camarasaurus lived during the Late Jurassic, some 145 to 150 million years ago, and featured a long, thick neck which made its head appear small in comparison. It had sturdy, spoon-shaped teeth, indicating its diet probably differed from other large herbivores that lived in the same ancient environment, with Camarasaurus most likely feeding on coarser plant materials.
Real fossils of both an adult and a juvenile Camarasaurus discovered at Dinosaur National Monument in Utah are on view in the Dinosaurs in Their Time exhibition at Carnegie Museum of Natural History. The juvenile is represented by a nearly complete skeleton that includes a full skull and even ear bones. The skeleton is displayed with its right side still mostly enveloped in sandstone belonging to a rock unit called the Morrison Formation.