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 Acmaeidae Forbes, 1850 - American limpets
                 1 Subfamily Acmaeinae Forbes, 1850 [monotypic]
                 2 Subfamily Pectinodontinae Pilsbry, 1891 [monotypic]