An artist's illustration shows Deinosuchus riograndensis swimming with an early alligator relative in the wetlands of the Western Interior Seaway in southwestern North America, during the Late ...

A 3D-printed version of the K. atrox skeleton found in Argentina's southern Patagonia. A hyper-carnivore, this ancient relative of today's alligators and crocodiles may have preyed on dinosaurs. - ...

The end-Cretaceous was the age of the dinosaurs, an era populated by iconic prehistoric creatures like Ankylosaurus, Gallimimus, Triceratops, and Tyrannosaurus rex. Our favorite dinosaurs might be the ...

A long time ago, strange predators roamed the Caribbean — not just birds and snakes, but land-dwelling crocodiles that sprinted after prey like hungry wolves. These ancient reptiles weren’t what most ...

Kostensuchus atrox was a top predator which lived just before the extinction of the dinosaurs, and likely chomped on them A newly-discovered species of a large, crocodile-relative predator has been ...

Tens of millions of years ago, an apex predator resembling a giant crocodile stalked the humid freshwater floodplains of southern Patagonia. Measuring up to 11.5 feet (3.5 meters) long and weighing ...

(CNN) — A massive, extinct reptile that once snacked on dinosaurs had a broad snout like an alligator’s, but it owed its success to a trait that modern alligators lack: tolerance for salt water.