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 Ostrea Linnaeus, 1758 - flat oyster
               Rudes, vulgo Ostrea dictae
                 176 Ostrea isognomum Linnaeus, 1758
                 177 Ostrea malleus Linnaeus, 1758
                 178 Ostrea folium Linnaeus, 1758 see Pycnodonta folium (C. Linnaeus, 1758)
                 179 Ostrea orbicularis Linnaeus, 1758
                 180 Ostrea edulis Linnaeus, 1758 - edible oyster
                 181 Ostrea semiaurita Linnaeus, 1758
                 182 Ostrea ephippiú Linnaeus, 1758