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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 Basommatophora
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Family Siphonariidae
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Genus Benhamina
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Genus Kerguelenella
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Genus Pugillaria
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Genus Siphonaria
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Genus Williamia
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