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 inciso
                   09 Cancer rhomboides Linnaeus, 1758
                   10 Cancer maculatus Linnaeus, 1758
                   11 Cancer pelagicus Linnaeus, 1758
                   12 Cancer nucleus Linnaeus, 1758
                   13 Cancer lactatus Linnaeus, 1758
                   14 Cancer maenas Linnaeus, 1758
                   15 Cancer depurator Linnaeus, 1758
                   16 Cancer feriatus Linnaeus, 1758
                   17 Cancer granulatus Linnaeus, 1758
                   18 Cancer pagurus Linnaeus, 1758 - edible crab