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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 Vitrinellidae
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Genus Circulus
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Species Circulus cosmius
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Species Circulus cubanus
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Species Circulus dalli
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Species Circulus hendersoni
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Species Circulus liratus
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Species Circulus margaritiformis
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Species Circulus multistriatus
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Species Circulus rossellinus
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Species Circulus semisculptus
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Species Circulus texanus
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Species Circulus translucens
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