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 Lepidochitoninae Iredale, 1914
               Genus Lepidochitona Gray, 1821
                 1 Subgenus Spongioradsia Pilsbry, 1894 see Genus Spongioradsia Pilsbry, 1894
                 2 Subgenus Dendrochiton Berry, 1911 see Genus Dendrochiton Berry, 1911