Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Polyplacophora Blainville, 1816 [monotypic] - chitons
     Subclass Polyplacophora Gray, 1821 [monotypic] see Class Polyplacophora Blainville, 1816
       Order Lepidopleurida Thiele, 1910
         Suborder Chitonina Thiele, 1909
           Family Ischnochitonidae Dall, 1889
             Subfamily Chaetopleurinae Plate, 1899 see Family Chaetopleuridae Plate, 1899
               1 Genus Chaetopleura Shuttleworth, 1853
               2 Genus Dinoplax Dall, 1882
               3 Genus Nuttallochiton Plate, 1899, nom. corr.