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 Amphibia Linnaeus, 1758 - amphibians see Class Amphibia Gray, 1825
           Order Reptiles Linnaeus, 1758 see Class Reptilia Linnaeus, 1758
             Genus Rana Linnaeus, 1758
               Rana esculenta Linnaeus, 1758 see Pelophylax kl. esculentus (Linnaeus, 1758)