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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 Bivalvia
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Order Unionoida
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Family Unionidae
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Genus Pyganodon
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Species Pyganodon cataracta
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Species Pyganodon fragilis
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Species Pyganodon gibbosa
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Species Pyganodon grandis
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Species Pyganodon lacustris
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