Phylum Mollusca Linnaeus, 1758 - molluscs
   Subphylum Aculifera Hatschek, 1891
     Class Polyplacophora Blainville, 1816 - chitons
       Order Neoloricata Bergenhayn, 1955 see Subclass Neoloricata Bergenhayn, 1955
         Suborder Acanthochitonina Bergenhayn, 1930
           Family Acanthochitonidae Pilsbry, 1893
             1 Subfamily Acanthochitoninae Pilsbry, 1893 see Family Acanthochitonidae Pilsbry, 1893
             2 Subfamily Cryptochitoninae Pilsbry, 1893