It seems the first resident of Earth to break the sound barrier wasn't Chuck Yeager, after all. He was about a hundred million years too late. Apatosaurus was a cousin of Brontosaurus, but even bigger ...

Apatosaurus had a 50-foot-long tail. (National Park Service Illustration / Bob Walters / Tess Kissinger) The dinosaur formerly known as Brontosaurus could certainly do a lot of damage with its long ...

(CNN) — Diplodocids were a family of dinosaurs with long necks and, often, even longer tails — some species' tails reached 50 feet in length. They were wide-ranging, but especially flourished in ...

Intricate models of apatosaurus' tail show that the animal may have been able to whip its tail faster than the speed of sound.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Diplodocids were a ...