polychaete, flatworm, metazoan, protozoan, brachiopod, gastropod, radula, rotifer, xenopus laevis, ciliates, tunicates, unicellular, teleost fish, chordates, crinoids, trilobite, homologies, wormlike, ectodermal, paramecia, fungus gnat, morphologically, bryozoan, hyphae, mytilus, prokaryote, monophyletic, chimaera, collembola, blennies, mycelia, planaria, trematode, teleost, chironomid, planarian, bilaterally symmetrical, protist, stickleback, arachnoid, spirochete, symbioses, tribolium, amoebas, hemolymph, amphioxus, americanus, flatfishes, tobacco hornworm, green alga, dinoflagellate, nematode worm, echinoderm, bufo, striata, phylum, schistosoma, dimorphic, ontogeny, heterochromatic, pteropod, raptorial, peroxisome, organogenesis, sinistral, amoeboid, coevolution, gall wasp, isopods, comb jelly, endosymbiosis, eukaryote, cyto, striated muscle, homologues, homo sapiens sapiens, invertebrate, mole rat, genus plasmodium, cartilaginous, mouthparts, borrelia, jawless, humanus, collagenous, musculus, notochord, insectivore, copepod, arthropod, trypanosoma, hindbrain, hemolysin, suborder, lepidopteran, trichomes, symbiont, copulatory, parasitoid, vespula, catfishes, volvox, annelids, amoeba, crustacean, crustaceans, mollusk, arthropods, mollusc, molluscs, mollusks, snails, alga, crustacea, flagellates, polychaetes, worms, gastropods, invertebrates, leeches, plankton, chordate, reptilian, vertebrate, piscine, tetrapod, anthropoid, elasmobranch, ascidian, mammalian, saurian, amniote, hominid, hominoid, apelike, australopithecine, larval, neanderthal

archiannelid, bloodsucker, hirudinean, leech, oligochaete, oligochaete worm, polychaete worm, polychete, polychete worm

branchiobdellidae, chaeta, class polychaeta, family branchiobdellidae, onychophoran, parapodium, peripatus, polychaeta, velvet worm

worm

annelid worm, annelidan, segmented worm