mammals, monotremes, ichthyosaurs, theropod dinosaur, plesiosaurs, arthropods, herbivores, theropod, crinoids, flatfishes, vertebrate, forelimbs, australopithecines, paranthropus, sauropods, psittacosaurus, bipedalism, chordates, rheas, ostracods, baleen whale, genus australopithecus, placoderms, placentals, caecilians, archosaur, stickleback, archaeopteryx, insectivores, peccaries, platypuses, archeopteryx, canid, iguanodon, ratites, pterosaurs, tyrannosaurs, species, tetrapods, tuataras, echidnas, teleost fish, reptiles, scutes, spiny anteater, ciliates, hyrax, arapaima, pipefish, mammalia, gracile, faunas, alligators, giraffa camelopardalis, lizards, subfamily, guanacos, subadult, komodo dragon, brachiosaurus, paradoxus, meadow vole, stegosaurs, orangs, amphioxus, sifaka, killifish, metazoan, mouthparts, coelophysis, lagomorphs, annelids, bryozoans, bilaterally symmetrical, smilodon, echinoderms, springtails, spotted hyena, marsupials, isopods, panthera leo, volvox, auks, placental mammal, protoceratops, pacu, prosimians, jawless fish, conodonts, copepods, phyla, eukaryote, bearded vulture, woodrat, cassowary, pelvic fin, wolf spider, robustus, amphipods, wood stork, toothed whale, massasauga, amphibians, crocodiles, primates, apes, cetaceans, ungulates, rhinoceroses, ruminants, turtles, vertebrates, lemurs, cephalopods, penguins, sharks, tortoises, anthropoids