In a new study, researchers said they uncovered part of a skull as well as arm, leg and tail bones from the Lago Colhué Huapi ...

Paleontologists in Argentina have discovered a new predatory dinosaur -- the fossils of which contained a crocodile bone ...

Scientists have discovered a new dinosaur from Argentina that may have used its long arms and claws to capture prey.

Found in the Lago Colhué Huapi Formation in Patagonia, Argentina, J. casali may have been the apex predator of its Cretaceous ...

Paleontologists in Argentina have discovered a new predatory dinosaur -- the fossils of which contained a crocodile bone within the dinosaur's mouth.

Paleontologists have found the fossilized remains of the oldest dome-headed dinosaur ever discovered.

A fossil from the blustery plains of Patagonia is revising your book on one of the most elusive bands of hunting dinosaurs.

Most of what researchers previously knew about the iconic Cretaceous dinosaurs came from their domed heads, which endured ...

In a new paper, researchers describe a bizarre dinosaur with thorny spines along its neck and back that made its home in ...

A dinosaur dubbed one of the "strangest" ever found boasted an elaborate armory of long bony spikes and a tail weapon, according to findings published in the science journal Nature. Spicomellus, which ...

Meet Joaquinraptor casali, a newly discovered megaraptorid that dominated parts of South America during the late Cretaceous.