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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 Neotaenioglossa
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Family Epitoniidae
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Genus Opalia
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Species Opalia abbotti
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Species Opalia acus
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Species Opalia andrewsii
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Species Opalia aurifila
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Species Opalia borealis
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Species Opalia bullata
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Species Opalia burryi
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Species Opalia chacei
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Species Opalia crenata
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Species Opalia crenatoides
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Species Opalia crosseana
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Species Opalia eolis
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Species Opalia espirita
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Species Opalia evicta
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Species Opalia funiculata
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Species Opalia hotessieriana
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Species Opalia infrequens
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Species Opalia leeana
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Species Opalia montereyensis
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Species Opalia pumilio
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Species Opalia retiporosa
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Species Opalia sanjuanensis
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Species Opalia tortilis
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Species Opalia watsoni
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Species Opalia wroblewskii
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