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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 Cephalaspidea
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Family Cylichnidae
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Genus Cylichna
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Species Cylichna alba
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Species Cylichna attanosa
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Species Cylichna attonsa
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Species Cylichna consobrina
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Species Cylichna crebripunctata
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Species Cylichna cylindracea
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Species Cylichna diegensis
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Species Cylichna discus
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Species Cylichna eburnea
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Species Cylichna fantasma
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Species Cylichna gouldii
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Species Cylichna linearis
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Species Cylichna nucleolus
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Species Cylichna obscura
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Species Cylichna occulta
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Species Cylichna oryza
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Species Cylichna ovata
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Species Cylichna verrilli
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Species Cylichna vortex
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