Sauropods were the largest land animals to ever walk the Earth, known for their long necks, massive bodies, and tiny heads. They lived from the Late Triassic to the end of the Cretaceous (about 210–66 million years ago) and included famous species like Brachiosaurus, Diplodocus, and Argentinosaurus. These plant-eaters could reach lengths of over 30 meters (98 feet) and weigh more than 70 tons. Their long necks helped them feed on high vegetation, and their pillar-like legs supported their enormo