flatfishes, ostracods, baleen whale, placental mammal, insectivore, hominoid, robustus, gracile, jawless fish, ichthyosaur, stegosaurs, psittacosaurus, iguanodon, paranthropus, theropod dinosaur, subadult, crinoids, jawless, conodonts, fossilised, ankylosaur, tetrapod, trilobite, australopithecines, archeopteryx, gastropod, mammuthus, sauropod dinosaur, monotreme, rotifer, theropod, middle paleolithic, scutes, tyrannosaur, plesiosaurs, echinoderm, precocial, radula, unisexual, pipefish, vertebrate, catfishes, ovipositor, crustacea, annelids, flatworm, crocodilian, protoceratops, spotted hyena, sifaka, metazoan, mammal, cartilaginous fish, stickleback, dimorphic, chordates, toothed whale, australopithecus africanus, rattus, swordtails, phalarope, pterosaur, coelophysis, finback, mandrill, griffon vulture, oviducts, ankylosaurus, ectothermic, gallus gallus, tuataras, devonian period, butterflyfish, braincase, camarasaurus, wattled, chimaeras, hyraxes, brachiopods, bufo, polychaete, anglerfish, placentals, lungfish, wolf spider, molluscan, crania, archosaur, chiroptera, tyrannosaurus, xenopus, apatosaurus, ceratopsian, ratite, turnstones, tyrannosaurus rex, suborder, eukaryote, ammonites, planarian, isopods, hadrosaur, anadromous, benthonic, carnivorous, crossopterygian, dwelling, extinct, eyeless, fossil, gnathostome, herbivorous, hermaphroditic, inhabiting, insectivorous, oviparous, placoid, sarcopterygian, selachian, teleostean, acclimated

aquatic vertebrate