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Littorinimorpha (Infraorder) ..Calyptraeoidea (Superfamily) ..Capuloidea (Superfamily) ..Cingulopsoidea (Superfamily) ..Cypraeoidea (Superfamily) ..Ficoidea (Superfamily) ..Littorinoidea (Superfamily) ..Naticoidea (Superfamily) ..Pterotracheoidea (Superfamily) ..Rissooidea (Superfamily) ..Tonnoidea (Superfamily) ..Vanikoroidea (Superfamily) ..Velutinoidea (Superfamily) ..Vermetoidea (Superfamily) - worm snails ..Xenophoroidea (Superfamily) ..Stromboidea (Superfamily) ....Aporrhaidae (Family) - pelican-foot snails ....†Colombellinidae (Family) ....†Pugnellidae (Family) ....Seraphsidae (Family) ....Strombidae (Family) - conchs ....Struthiolariidae (Family) - ostrich-foot snails ....†Thersiteidae (Family) ....†Tylostomatidae (Family)

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Last updated: 28 Aug 2026