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
         Insecta Linnaeus, 1758 - insects
           Aptera Linnaeus, 1758
             Cancer Linnaeus, 1758 - cancer crab
               Macrouri Linnaeus, 1758
                 Macrouri manibus adactylis, testa thoracis brevissima, nec thoracem totum tegente
                   Cancer stagnalis Linnaeus, 1758