Giant 20-foot-long raptor dinosaurs once roamed Australia, according to a new study that could rewrite the evolutionary history and hierarchy of predators on the continent. The research, published in ...

Kostensuchus atrox, a dinosaur-eating predator related to crocodiles, revealed in study after fossils discovered in Argentina.

Scientists in Argentina have discovered Kostensuchus atrox, a 70 million-year-old crocodile relative that hunted dinosaurs.

The piece illustrates the disparity of the Northern and Southern hemisphere’s evolution of terrestrial Cretaceous faunas after the Cretaceous Thermal Maximum. On the left, End Cretaceous Southern ...