Cretaceous period

This is the Cretaceous period, a time of terror and fear, the dominant predator Tyrannosaurus rex, other dinosaurs of this period, Tarbosaurus, Triceratops, Gorgosaurus, Albertosaurus, Therizinosaurus, Utahraptor, Achillobator, Ankylosaurus, Iguanodon, Carnotaurus, Spinosaurus, Suchomimus, Baryonyx, Decynosuchus, Sarcosuchus, Quetzalcoatlus, Barbarydactyl, Pachycephalosaurus, Pachyrhinosaurus, Parasaurolophus, Dracorex, Troodon, Nanuksaurus, Concavenator, Australovenator