Argentavis magnificens was so massive it should’ve stayed grounded. Yet, this giant prehistoric bird still ruled the skies of ...

A wildlife ranger in New Zealand filmed “rare footage” of a fight between a flightless bird and the country’s “largest reptile,” officials said. Photo from New Zealand’s Department of Conservation A ...

(Raul Martin) Of all the dinosaur superlatives, “biggest dinosaur ever” is one of the most prized. The trouble is that we don’t really know who deserves the title. Sauropods like Apatosaurus (once ...