Dinosaur Skull Replicas. Allosaurus, Abelisaurus, Archaeopteryx, Avimimus, Camarasaurus, Carnotaurus, Crocodile, Camarasaurus, Deinonychus, Eoraptor, Giganotosaurus, Herrerasaurus, Sinraptor, Suchomimus, Triceratops, T-rex, T-rex foot, Tyrannosaurus rex, Uintatherium, Velociraptor and more. Dinosaurs were the dominant vertebrate animals of terrestrial ecosystems for over 160 million years, from the late Triassic period (about 230 million years ago) to the end of the Cretaceous period (65 million years ago), when most of them became extinct in the Cretaceous and Tertiary extinction event.
