Argentinosaurus May Have Been the Heaviest Animal Ever to Walk the Earth
Argentinosaurus, a titanosaur sauropod from Cretaceous Argentina, is estimated to have weighed between 70 and 100 tonnes — potentially the heaviest land animal in Earth's history. It measured up to 35–40 metres long. To support its enormous bulk, its vertebrae were larger than a full-grown human. Sauropods as a group were the largest land animals ever, far exceeding any mammal.