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
             107 Genus Crotalus Linnaeus, 1758
             108 Genus Boa Linnaeus, 1758
             109 Genus Coluber Linnaeus, 1758
             110 Genus Anguis Linnaeus, 1758
             111 Genus Amphisbaena Linnaeus, 1758
             112 Genus Caecilia Linnaeus, 1758
             112.0 Genus "Coecilia" Linnaeus, 1758 see Genus Caecilia Linnaeus, 1758