What especially distinguishes Parasaurolophus walkeri is its hollow bony crest

facilitating the capture of prey in flight

although most of its defense probably came from its size and strength

Today only two species of Triceratops are contemplated (T

Approximate measurements of the Europasaurus: Scale 1:35

Teratophoneus curriei Aquilops What especially distinguishes Parasaurolophus walkeriTeratophoneus curriei was a tyrannosaurid theropod dinosaur belonging to the subfamily Tyrannosaurinae, a large and robust predator that inhabited North America during the Late Cretaceous, specifically in the late Campanian, approximately 76. 575. 5 million years ago, in what is now southern Utah, United States. Its name literally means monster murderer, derived from the Greek teras (monster) and phoneus (murderer), while the epithet curriei honors