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
               Pectines auricula altera intus ciliato-spinosa
                 163 Ostrea pallium Linnaeus, 1758
                 164 Ostrea nodosa Linnaeus, 1758
                 165 Ostrea pes felis Linnaeus, 1758
                 166 Ostrea pellucens Linnaeus, 1758
                 167 Ostrea sanguinea Linnaeus, 1758
                 168 Ostrea varia Linnaeus, 1758
                 169 Ostrea pusio Linnaeus, 1758
                 170 Ostrea glabra Linnaeus, 1758
                 171 Ostrea opercularis Linnaeus, 1758
                 172 Ostrea gibba Linnaeus, 1758