theropod dinosaur, gracile, homo erectus, horned dinosaur, hominoid, woolly rhinoceros, sauropod dinosaur, mammuthus, jawless, peccary, spotted hyena, stegodon, australopithecus africanus, australopithecine, crocodilian, trilobite, fossilised, placental mammal, apelike, insectivore, homo heidelbergensis, neandertal, homo habilis, raptorial, placoderm, middle paleolithic, monotreme, pterosaur, baleen whale, gallus gallus, mammal, guanaco, tertiary period, tyrannosaurus, cichlid, herbivorous, maned wolf, dinosaurian, monophyletic, griffon vulture, rhinocerous, triassic period, caucasoid, canis lupus, sea scorpion, felis silvestris, brachiopod, prehistorical, devonian period, relict, anthropoid, quadrupedal, damselfish, polychaete, microcephalic, coprolite, panthera leo, palaeolithic, meadow vole, upper paleolithic, genus australopithecus, tyrannosaurus rex, columbian mammoth, pygmy chimpanzee, tetrapod, zebu, faunal, crocodylus, cenozoic era, herbivore, spectacled caiman, mousterian, muntjac, slender loris, crinoid, pan troglodytes, nile crocodile, hominid, cartilaginous, mesozoic era, biogeographical, cretaceous period, bornean, prehistoric, metazoan, spiny anteater, jurassic period, giant tortoise, bilaterally symmetrical, palaeontological, paleozoic era, panthera tigris, coeval, jungle fowl, hawk moth, saurian, fossilized, loris, tusked, mesozoic, pygmy marmoset, annelid, amniote, anuran, teleostean, vertebrate, amphibian, arthropod, cetacean, chiropteran, chordate, crustacean, dinosaur, elasmobranch

protoceratops, psittacosaur, psittacosaurus, styracosaur, styracosaurus, triceratops

ceratopsidae, family ceratopsidae, marginocephalia, marginocephalian, styracosaur, styracosaurus, suborder marginocephalia, triceratops

ornithischian, ornithischian dinosaur

horned dinosaur