Do you mean Saltasaurus? This was a sauropod (family Titanosauridae) that lived in South America near the end of the Cretaceous Period. It was lightly armoured with bony plates embedded in the skin of its back. Length about 12m or 40'; weight about 6 to 8 tons. Its nearest relatives were Titanosaurus from India, and Alamosaurus from the southwestern U.S..