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 Serpentes Linnaeus, 1758 see Suborder Serpentes Linnaeus, 1758
             Genus Anguis Linnaeus, 1758
               160 Anguis bipes Linnaeus, 1758
               197 Anguis meleagris Linnaeus, 1758
               198 Anguis colubrina Linnaeus, 1758 see Eryx colubrinus (Linnaeus, 1758)
               209 Anguis jaculus Linnaeus, 1758 see Eryx jaculus (Linnaeus, 1758)
               212 Anguis maculata Linnaeus, 1758
               214 Anguis reticulata Linnaeus, 1758
               215 Anguis cerastes Linnaeus, 1758
               237 Anguis lumbricalis Linnaeus, 1758
               250 Anguis laticauda Linnaeus, 1758
               253 Anguis scytale Linnaeus, 1758
               262 Anguis eryx Linnaeus, 1758
               270 Anguis fragilis Linnaeus, 1758