Phylum Mollusca Linnaeus, 1758 - molluscs
Status: extant
   Subphylum Conchifera Gegenbauer, 1878
  Status: extant
     Class Gastropoda Cuvier, 1795 - snails and slugs
    Status: extant
       Subclass Eogastropoda Ponder & Lindberg, 1995
      Status: extant
         Order Patellogastropoda Lindberg, 1986
        Status: extant
           Suborder Nacellina Lindberg, 1988 see Superfamily Nacelloidea Thiele, 1891
          Status: extant
             Superfamily Acmaeoidea Carpenter, 1857 see Superfamily Lottioidea Gray, 1840
            Status: extant
               Family Acmaeidae Forbes, 1850 - American limpets
              Status: extant
                 Subfamily Pectinodontinae Pilsbry, 1891
                Status: extant