Paleontologists have discovered the fossilized remains of a crocodile "hypercarnivore" that lived in what is now Argentina some 70 million years ago—and it ate dinosaurs.

Named Kostensuchus atrox , the species lived during the Maastrichtian age at the very end of the Cretaceous period, just before the extinction of the dinosaurs.

At that time, southern Argentina was a warm, seasonally humid landscape made up of freshwater floodplains, home to creatures like dinosaurs, frogs frogs and various mammals.

The skeleton of K. atrox was found largely intact, and included a well-preserved skull and jaws. Researchers who described the find believe that it likely grew to some 11.5 feet long and weighed in at around 550 pounds.

It had a wide, powerful jaw and big teeth that made it capable of

See Full Page