Imperium naturæ C. Linnaeus, 1758 - nature
   Mundus Plinius - physical world
     naturalia - natural bodies
       Regnum Animale C. Linnaeus, 1758 - animal kingdom see Kingdom Animalia Linnaeus, 1758
         Class Vermes Linnaeus, 1758 - worms see Phylum Vermes (C. Linnaeus, 1758)
           Order Testacea Linnaeus, 1758
             Genus Nautilus Linnaeus, 1758
               Spirales rotundati
                 233 Nautilus pompilius Linnaeus, 1758
                 234 Nautilus crista Linnaeus, 1758
                 235 Nautilus calcar Linnaeus, 1758
                 236 Nautilus crispus Linnaeus, 1758
                 237 Nautilus beccarii Linnaeus, 1758
                 238 Nautilus umbilicatus Linnaeus, 1758
                 239 Nautilus spirula Linnaeus, 1758 see Spirula spirula (Linnaeus, 1758)