conodonts, ostracods, rotifer, polychaete, flatworm, isopod, bryozoan, baleen whale, ocean sunfish, brachiopod, toothed whale, theropod dinosaur, tunicate, molluscan, nudibranchs, planarian, radula, robustus, trilobite, pteropod, crinoid, sea anemone, damselfish, killifish, insectivore, moray eel, gracile, borealis, scorpionfish, sea squirt, annelid, crustacea, hawk moth, bivalve, stag beetle, dinoflagellate, whiptail, flatfishes, green alga, mollusc, stickleback, gigantea, gigas, plesiosaurs, amphioxus, auks, mytilus, copepod, ambystoma, monotreme, porites, echinoderm, pteropods, anemone, metazoans, coprolite, frogfish, nematode worm, blennies, placental mammal, loach, chimaera, teleost fish, ichthyosaur, bonnethead, sphinx moth, stony coral, catfishes, wormlike, meadow vole, cucumis, bilaterally symmetrical, jawless fish, mole rat, braincase, scutes, loaches, fiddler crab, hyrax, staghorn, placoderm, carcharhinus, carcharias, elegans, cebus, turnstones, americanus, comb jelly, pipefish, springtails, crocodilian, biotope, anglerfish, tadpole shrimp, freshwater mussel, butterflyfish, abalones, anole, drosophila, iguanodon, protists, legless lizard, gastropods, molluscs, mollusks, crustaceans, mollusk, bivalves, crustacean, invertebrates, snails, arthropods, fishes, mammal, mammals, marsupials, mollusca, reptiles, alga, anuran, nematode, arthropod, benthic, seabird, dragonfly, foraminiferal, hummingbird, intraspecific, lepidopteran, parasite, planktonic, tetrapod, amphibian

abalone, ancylus fluviatilis, aplacophoran, aplysia punctata, bubble shell, conch, cowrie, cowry, ear-shell, freshwater limpet, nudibranch, physa, river limpet, seasnail, sea hare, sea slug, slug, snail, solenogaster

ancylidae, ancylus fluviatilis, aplysia punctata, bleeding tooth, bubble shell, dextral, family ancylidae, freshwater limpet, nerita peloronta, nudibranchia, order nudibranchia, periwinkle, river limpet, sea hare, sinistral, snail, winkle

mollusc, mollusk, shellfish

univalve