Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Cephalopoda Cuvier, 1795 - cephalopods
     Subclass Nautiloida Agassiz, 1848 see Subclass Nautiloidea Agassiz, 1848
       Order Nautilida Agassiz, 1848
         Suborder Nautilina Agassiz, 1848
           Superfamily Nautiloidea Blainville, 1825
             1 Family Nautilidae Blainville, 1825
             2 Family Hercoglossidae Spath, 1927 [monotypic]
             3 Family Aturiidae Hyatt, 1894 [monotypic]