monotreme Definition

egg-laying mammal, echidna, placental mammal, spiny anteater, theropod, crocodilian, vertebrate, mammalia, placentals, tyrannosaur, theropod dinosaur, archeopteryx, prototherian, flatfishes, baleen whale, sifaka, flatworm, ichthyosaur, platypuses, metazoan, trilobite, conodonts, iguanodon, habilis, aurochs, camarasaurus, mandrill, amphioxus, protoceratops, mangabey, psittacosaurus, homo erectus, gastropod, eukaryote, binturong, placoderms, paranthropus, hawk moth, dinosauria, utahraptor, robustus, archaeopteryx, mantis shrimp, toothed whale, chordates, apatosaurus, ontogenetic, thylacine, radula, homo habilis, zebra finch, xenopus, coelacanth, hyrax, morphologically, mosasaur, guanaco, insectivore, archosaur, meadow vole, introgression, godwit, faunas, nematode worm, tuataras, australopithecus africanus, dinosaurian, ankylosaurus, plesiosaurs, bilaterally symmetrical, coelophysis, eyespots, pinniped, ladybird beetle, devonian period, australopithecines, spotted hyena, ostracods, auk, hominoid, stickleback, crinoid, endosymbiosis, mole rat, maned wolf, ambystoma, biogeographic, skink, prairie vole, chimaera, peccary, xenopus laevis, rotifer, colobus, tetrapod, proboscis monkey, hawaiian honeycreeper, coprolite, gallus gallus, pan troglodytes,