Barosaurus is a large sauropod from North America. It was a herbivore that ate low plants like Diplodocus. It is closely related to Diplodocus and part of North America's big six sauropods, which includes Brachiosaurus, Diplodocus, Apatosaurus, Camarasaurus and Haplocanthosaurus. The most famous fossil of Barosaurus is a complete skeleton from Royal Ontario Museum also known as the ROM. Is Gordo. Its skeleton was locked up in old storage until the museum had a up-grade and decided to take it out on display.