Scientists announced Tuesday the discovery of a new dinosaur in Patagonia, Argentina, with a crocodile bone in its jaw.

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 ...

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

The find is from a mysterious group of dinosaurs called megaraptorans, which were known for their stretched-out skulls and ...

Scientists in Argentina have discovered Joaquinraptor casali, a new dinosaur species from the mysterious megaraptoran group.

Paleontologists discovered a new species of iguanodontian dinosaur that lived 125 million years ago during the Cretaceous period.

Scientists have discovered a new dinosaur from Argentina with powerful claws, feasting on an ancient crocodile bone.

Scientists have discovered a new dinosaur with powerful claws, feasting on an ancient crocodile bone.

The new dinosaur, named Joaquinraptor casali, was about 23 feet (7 meters) long and weighed over 2,200 pounds.

A fossil from about 66 million years ago reveals a species of dinosaur that is new to science, with claws that would have ...

Researchers digging in Argentina have uncovered a new type of ancient dinosaur that once roamed the Earth millions of years ...