Bones Reveal The Brontosaurus Had An Older, Massive Cousin In South Africa

Viktor Radermacher, University of the Witwatersrand

Updated at 8:57 p.m. ET

Millions of years before the brontosaurus roamed the Earth, a massive relative was lumbering around South Africa.

Scientists think this early Jurassic dinosaur was, at the time, the largest land creature ever to have lived. And unlike the even bigger creatures that came later, they think it could pop up on its hind legs.