Each was the most successful predator of its time. In a ferocious duel of the dinosaurs—Tyrannosaurus rex vs. Giganotosaurus carolinii—which would emerge alive?

The species name, Giganotosaurus carolinii, honors Carolini. In 1998, Argentine geologist and paleontologist Jorge Orlando Calvo discovered a second Giganotosaurus specimen, which consisted of the ...

Tyrannosaurus rex, the undisputed king of dinosaurs, has a challenger for its crown. The bones of Giganotosaurus carolinii, a two-legged, 41-foot-long meat-eater, were recently discovered by a car ...

It's the same zone in which Giganotosaurus carolinii, considered the biggest carnivorous dinosaur of all time, was discovered in 1993. It lived during the late Cretaceous period and could have fed ...

Don Lessem was the dinosaur adviser for the first Jurassic Park, a job he says sounds more impressive than it was. His real big-dinosaur break happened years later, thanks to a blurry photo of a bone.

In Patagonia, there are little towns with very big bones. The fossilized skeleton of the biggest dinosaur to roam the planet was discovered near Plaza Huincul, in the badlands of northwest Patagonia.