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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 Archaeogastropoda
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Family Addisoniidae
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Family Calliostomatidae
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Superfamily Cocculinoidea
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Superfamily Fissurelloidea
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Family Haliotididae
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Superfamily Hydrocenoidea
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Superfamily Lepetelloidea
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Family Lepetodrilidae
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Family Orbitestellidae
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Superfamily Patelloidea
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Family Pleurotomariidae
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Family Pseudococculinidae
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Family Scissurellidae
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Family Seguenziidae
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Family Skeneidae
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Family Titiscaniidae
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Superfamily Trochacea
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Family Trochaclididae
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Family Trochidae
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Family Turbinidae
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