Add Yahoo as a preferred source to see more of our stories on Google. A reconstruction of the newly discovered megaraptor Joaquinraptor casali from Argentina with a Cretaceous-era crocodile arm in its ...

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 ...

A reconstruction of the newly discovered megaraptor Joaquinraptor casali from Argentina with a Cretaceous-era crocodile arm in its mouth. Illustration by Andrew McAfee, Carnegie Museum of Natural ...

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 ...