[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Mollusca Linnaeus, 1758 - molluscs
     Class Polyplacophora Blainville, 1816 - chitons
       Family Ischnochitonidae Dall, 1889
         Genus Callistochiton Dall, 1882
           1 Callistochiton pachylasmae Seguenza, 1879