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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 Neotaenioglossa
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Family Hydrobiidae
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Genus Amnicola
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Genus Antrobia
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Genus Antrorbis
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Genus Antroselates
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Genus Aphaostracon
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Genus Balconorbis
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Genus Birgella
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Genus Bythinella
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Genus Catapyrgus
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Genus Cincinnatia
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Genus Clappia
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Genus Cochliopa
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Genus Cochliopina
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Genus Dasyscias
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Genus Fluminicola
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Genus Fontelicella
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Genus Fontigens
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Genus Gillia
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Genus Hadoceras
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Genus Hadopyrgus
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Genus Heleobops
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Genus Holsingeria
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Genus Horatia
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Genus Hoyia
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Genus Hyalopyrgus
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Genus Hydrobia
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Genus Lepyrium
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Genus Lithoglyphus
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Genus Littoridina
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Genus Littoridinops
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Genus Lyogyrus
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Genus Marstonia
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Genus Notogillia
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Genus Onobops
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Genus Opacuincola
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Genus Paludestrema
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Genus Paxillostium
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Genus Phreatoceras
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Genus Phreatodrobia
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Genus Potamopyrgus
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Genus Pristinicola
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Genus Probythinella
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Genus Pyrgophorus
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Genus Pyrgulopsis
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Genus Rhapinema
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Genus Saganoa
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Genus Somatogyrus
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Genus Spilochlamys
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Genus Spurwinkia
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Genus Stiobia
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Genus Stygopyrgus
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Genus Taylorconcha
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Genus Texadina
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Genus Texapyrgus
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Genus Tryonia
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