living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         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
                 Superfamily Cerithiacea Férussac, 1819 see Superfamily Cerithioidea Fleming, 1822
                   Family Potamididae Adams & Adams, 1854 - potamids
                     Subfamily Potamidinae Adams & Adams, 1854 see Family Potamididae Adams & Adams, 1854
                       1 Genus Pirenella Gray, 1847
                       2 Genus Cerithidea Swainson, 1840
                       3 Genus Teloscopium see Genus Telescopium Montfort, 1810
                       4 Genus Terebralia Swainson, 1840
                       5 Genus Royella Iredale, 1912
                       6 Genus Pyrazus Montfort, 1810
                       7 Genus Tympanotonus Agassiz, 1846, nom. illeg. see Genus Tympanotonos Schumacher, 1817