Phylum Mollusca Linnaeus, 1758 - molluscs
Status: extant
   Subphylum Aculifera Hatschek, 1891
  Status: extant
     Class Aplacophora von Ihering, 1876 - aplacophorans see Phylum Mollusca Linnaeus, 1758
    Status: extant
       Subclass Chaetodermomorpha Pelseneer, 1906 - chaetoderms see Class Caudofoveata Boettger, 1956
      Status: extant
         Family Prochaetodermatidae Salvini-Plawen, 1968
        Status: extant