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 Insecta Linnaeus, 1758 - insects
           Order Aptera Linnaeus, 1758
             Genus Cancer Linnaeus, 1758 - cancer crab
               Macrouri Linnaeus, 1758
                 Macrouri manibus adactylis, testa thoracis brevissima, nec thoracem totum tegente
                   54 Cancer mantis Linnaeus, 1758
                   55 Cancer scyllarus Linnaeus, 1758
                   56 Cancer pulex Linnaeus, 1758
                   57 Cancer locusta Linnaeus, 1758
                   58 Cancer salinus Linnaeus, 1758
                   59 Cancer stagnalis Linnaeus, 1758