Phylum Mollusca Linnaeus, 1758 - molluscs
   Subphylum Aculifera Hatschek, 1891
     Class Polyplacophora Blainville, 1816 - chitons
       Order Neoloricata Bergenhayn, 1955 see Subclass Neoloricata Bergenhayn, 1955
         Suborder Ischnochitonina Bergenhayn, 1930 see Suborder Chitonina Thiele, 1909
           Family Ischnochitonidae Dall, 1889
             Subfamily Ischnochitoninae Dall, 1889 see Family Ischnochitonidae Dall, 1889