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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 Acochlidioidea
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Order Anaspidea
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Order Archaeogastropoda
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Order Architaenioglossa
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Order Basommatophora
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Order Cephalaspidea
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Order Cocculiniformia
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Order Gymnosomata
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Order Heterostropha
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Order Mesogastropoda
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Order Neogastropoda
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Order Neotaenioglossa
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Order Neritopsina
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Order Notaspidea
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Order Nudibranchia
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Order Patellogastropoda
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Order Pulmonata
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Order Rhodopemorpha
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Order Sacoglossa
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Order Stylommatophora
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Order Systellommatophora
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Order Thecosomata
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Order Vetigastropoda
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