australopithecine, theropod dinosaur, quadrupedal, australopithecus africanus, eukaryote, metazoan, placental mammal, homo erectus, gracile, apelike, crinoid, multicellular, vertebrate, placoderm, cartilaginous, ontogenetic, unicellular, australopithecus, evolutionary, morphological, neandertal, bilaterally symmetrical, baleen whale, otolith, hominoid, fossilised, pterosaur, monophyletic, devonian period, dimorphic, sauropod dinosaur, embryological, stegodon, jawless fish, monotreme, hominid, brachiopod, trilobite, subadult, angiosperm, middle paleolithic, toothed whale, teleost fish, crocodilian, chordate, jawless, woolly rhinoceros, homo habilis, fossil, molluscan, cenozoic era, genus homo, phylogenetic, homo heidelbergensis, wormlike, pelvic fin, peccary, prokaryote, spiny anteater, mammalian, horned dinosaur, striated muscle, lungless, cambrian period, pelvic girdle, fossilized, biogeographical, dinosaurian, cretaceous period, hyoid, cenozoic, insectivore, morphogenetic, bipedal, upper paleolithic, tyrannosaurus, maxillary, stromatolite, genus australopithecus, ciliated, planktonic, herbivorous, parthenogenetic, precocial, neogene, hind limb, ectodermal, cartilaginous fish, eocene epoch, comparative anatomy, diatom, organismal, echinoderm, anthropoid, columbian mammoth, faunal, unspecialized, ceratopsian, lamarckian, palaeolithic, mammuthus, xenopus laevis, tetrapods, insectivores, amphibians, angiosperms, anthropoids, eocene, marsupials, amphibian, arthropods, chordates, jurassic, mammal, primate, reptiles, vertebrates, annelids, carboniferous, crinoids, reptilian, amniote, arthropod, annelid, cetacean, piscine, anuran, saurian, crustacean, eutherian

quadruped

cynodontia, division cynodontia, ichyostega

craniate, vertebrate