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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Mollusca (clams, snails, squids, and relatives)
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Class Gastropoda
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Order Stylommatophora
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Family Achatinidae
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Family Arionidae
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Family Bradybaenidae
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Family Bulimulidae
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Family Camaenidae
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Family Ceriidae
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Family Charopidae
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Family Cionellidae
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Family Cochlicopidae
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Family Discidae
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Family Ferrussaciidae
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Family Haplotrematidae
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Family Helicarionidae
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Family Helicidae
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Family Helicodiscidae
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Family Helminthoglyptidae
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Family Humboldtianidae
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Family Hygromiidae
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Family Limacidae
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Family Megomphicidae
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Family Milacidae
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Family Oleacinidae
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Family Oreohelicidae
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Family Philomycidae
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Family Polygyridae
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Family Punctidae
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Family Pupillidae
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Family Sagdidae
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Family Spiraxidae
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Family Streptaxidae
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Family Strobilopsidae
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Family Subulinidae
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Family Succineidae
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Family Testacellidae
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Family Thysanophoridae
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Family Urocoptidae
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Family Valloniidae
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Family Vitrinidae
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Family Xanthonychidae
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Family Zonitidae
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