Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Superorder Archaeogastropoda Thiele, 1925
         Order Docoglossa Troschel, 1866
           Suborder Euomphalina de Koninck, 1881 see Superfamily Euomphaloidea White, 1877
             Superfamily Patelloidea Rafinesque, 1815
               Family Lottiidae Gray, 1840 - American limpets
                 Subfamily Patelloidinae Chapman & Gabriel, 1923
                   1 Genus Patelloida Quoy & Gaimard, 1834
                   2 Genus Potamacmaea Peile, 1922
                   3 Genus Proscutum Fischer, 1885
                   4 Genus Marbodeia Haber, 1932, orth. inval. see Genus Marbodaeia Chelot, 1887
                   5 Genus Niveotectura Habe, 1944
                   6 Genus Erginus Jeffreys, 1877