[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
       1 Family Leptochitonidae Dall, 1889
       2 Family Hanleyidae Bergenhayn, 1955
       3 Family Ischnochitonidae Dall, 1889
       4 Family Mopaliidae Dall, 1889
       5 Family Chitonidae Rafinesque, 1815
       6 Family Acanthochitonidae Pilsbry, 1893