iguanodon, theropod, ankylosaur, theropod dinosaur, baleen whale, trilobite, allosaurus, ichthyosaurs, hadrosaur, tyrannosaur, psittacosaurus, sauropod dinosaur, diplodocus, tyrannosaurus, apatosaurus, stegodon, arthropod, insectivore, conodonts, australopithecine, ankylosaurus, sauropods, dimetrodon, robustus, crinoids, africanus, gracile, coelophysis, camarasaurus, ostracods, peccary, crocodilian, sifaka, radula, bilaterally symmetrical, braincase, aurochs, protoceratops, giganteus, holotype, compsognathus, hyraxes, australopithecus africanus, borealis, stegosaur, horned dinosaur, toothed whale, carboniferous period, brachiopod, hawk moth, coprolite, habilis, microfossil, hominoids, tetrapods, dinosaur, woolly rhinoceros, herbivore, homo erectus, pongo pygmaeus, mosasaur, ceratopsian, sea scorpion, wormlike, paranthropus, homo habilis, middle paleolithic, canid, mammuthus, slender loris, gigantea, brachiosaurus, ammonites, columbian mammoth, griffon vulture, rotifer, ovenbird, scutes, elephant shrew, trackway, homo heidelbergensis, ambystoma, jerboa, archosaur, australopithecus, legless lizard, spotted hyena, millipede, bryozoans, carcharhinus, liverwort, musk turtle, spiny anteater, deinonychus, duckbill, faunas, barnacle goose, echidnas, meadow vole, plesiosaurs, bufo, pterosaur

ornithischian, ornithischian dinosaur

ornithopod dinosaur