Dinosaurs roamed the world over 230 million years ago. Though we think of the T-Rex as the king of the dinos, this 138-foot giant is biggest.

A 70-foot-long Apatosaurus skeleton, named Vulcan, recently became the biggest dinosaur fossil ever sold when it was acquired for around $6.4 million at an auction in France. The sizable remains ...

Dinosaurs roamed the world over 230 million years ago. Though we think of the T-Rex as the king of the dinos, this 138-foot giant is biggest.

Argentine paleontologists have discovered the remains of a gigantic new species of long-necked herbivorous dinosaur in the country's southern Patagonia region, saying the beast ranks as one of the ...