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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 Polygyridae
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Genus Mesodon
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Species Mesodon altivagus
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Species Mesodon andrewsae
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Species Mesodon clausus
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Species Mesodon elevatus
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Species Mesodon mitchellianus
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Species Mesodon normalis
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Species Mesodon sanus
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Species Mesodon thyroidus
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Species Mesodon trossulus
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Species Mesodon zaletus
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