theropod dinosaur, utahraptor, theropod, apatosaurus, tyrannosaur, plesiosaurs, baleen whale, forelimbs, ichthyosaur, paranthropus, psittacosaurus, allosaurus, protoceratops, iguanodon, deinonychus, sea scorpion, robustus, stegodon, megafauna, australopithecine, sabertooth, gracile, woolly rhinoceros, brachiosaurus, crocodilian, homo erectus, mammal, monotremes, habilis, trilobite, canid, diplodocus, pterosaur, ankylosaurus, tyrannosaurus rex, placentals, ceratopsian, genus australopithecus, archeopteryx, placoderms, neandertal, australopithecus africanus, ostracods, camarasaurus, sauropod dinosaur, crania, aurochs, tyrannosaurus, erectus, scutes, archaeopteryx, braincase, toothed whale, arthropod, mammuthus, edmontosaurus, pachycephalosaurus, velociraptor, coelophysis, insectivore, woolly mammoth, mammoths, stegosaurs, brachiopods, radula, caecilians, hominoid, baculum, triceratops, conodonts, columbian mammoth, ornithopod, carnivore, peccary, homo habilis, pteranodon, herbivore, tuataras, carcharias, isopods, devonian period, canis lupus, dinos, panthera tigris, mosasaur, narwhal, homo heidelbergensis, crinoids, brontosaurus, stickleback, coprolite, sifaka, premolar, ankylosaur, hadrosaur, felis silvestris, panthera leo, mandibles, meadow vole, komodo dragon, nile crocodile, chimaera