The most common giant sauropod found in North America is the Camarasaurus. These fossils were found in the Morrison Formation areas of Utah and Colorado. Researchers have estimated that the Camarasaurus dates back to the Late Jurassic Period and roamed North America around 155 million years ago.
The name Camarasaurus means Chambered Lizard, which refers to its spine, which has hollow chambers. That would help make this dinosaur lighter and have the ability to breathe easier. The shape of the Camarasaurus’ vertebrae leads to it having a strong, muscular neck. The Camarasaurus was a herbivore and had strong teeth for grinding foliage. They tended to eat different vegetation from other sauropods, so they had little competition for food.