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
             Family Nautilidae Blainville, 1825
               1 Genus Nautilus Linnaeus, 1758
               2 Genus Eutrephoceras Hyatt, 1894
               3 Genus Rhyncholites Merian, 1835, nom. illeg. see Genus Rhyncolites Faure-Biguet, 1819