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

Bones Reveal The Brontosaurus Had An Older, Massive Cousin In South Africa
The scientists think when this new dinosaur was alive, it was the largest creature ever to have walked the Earth. And unlike the lumbering creatures that came later, it could pop up on its hind legs.

Read more on NPR