gorgosaurus noun1 •A tyrannosaurid theropod dinosaur of the genus Gorgosaurus that lived in western North America during the Late Cretaceous Period (Campanian), between about 76.6 and 75.1 million years ago.No. 1 is in the Stone age, the time when man went around dressed in a bearskin and threw rocks at prehistoric monsters called Ankylosauri, Gorgosauri or Triceratops. — 1930 formsgorgosauri · gorgosauruses
