Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Mollusca Linnaeus, 1758 - molluscs
     Class Gastropoda Cuvier, 1795 - snails and slugs
       Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
         Order Mesogastropoda Thiele, 1925 - mesogastropods see [unranked] mesogastropods
           Family Hydrobiidae Stimpson, 1865
           Family Viviparidae Gray, 1847 (1833)
           Family Littorinidae Children, 1834 - periwinkles
           Family Caecidae Gray, 1850 - caecids
           Family Vermetidae Rafinesque, 1815 - worm snails
           Family Cerithiidae Fleming, 1822 - ceriths
           Family Potamididae Adams & Adams, 1854 - potamids
           Family Strombidae Rafinesque, 1815 - conchs
           Family Epitoniidae Berry, 1910 (1812) - wentletraps
           Family Janthinidae Lamarck, 1822 - violet snails
           Family Hipponicidae Troschel, 1861 - horse hoof limpits
           Family Capulidae Fleming, 1822 - cap snails
           Family Calyptraeidae Lamarck, 1809 - slipper snails and shelf limpets
           Family Carinariidae Blainville, 1818
           Family Naticidae Guilding, 1834 - moon snails
           Family Eratoidae T. Gill, 1871 - coffee bean shells see Tribe Eratoini Gill, 1871
           Family Cypraeidae Rafinesque, 1815 - cowries
           Family Ovulidae Fleming, 1822 - egg snails
           Family Tonnidae Suter, 1913 (1825) - tuns
           Family Cassididae Adams & Adams, 1853 - helmet shells
           Family Ficidae Meek, 1864 (1840) - fig snails
           Family Turritellidae Lovén, 1847 - turret snails