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
               Brachyuri Linnaeus, 1758
                 Brachyuri Thorace laevi lateribus integerrimo
                   1 Cancer cursor Linnaeus, 1758
                   2 Cancer raninus Linnaeus, 1758
                   3 Cancer mutus Linnaeus, 1758
                   4 Cancer minutus Linnaeus, 1758
                   5 Cancer ruricola Linnaeus, 1758
                   6 Cancer vocans Linnaeus, 1758
                   7 Cancer craniolaris Linnaeus, 1758
                   8 Cancer philargius Linnaeus, 1758