Imperium naturae C. Linnaeus, 1758 - nature
   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
         123 Genus Crotalus Linnaeus, 1758
         124 Genus Boa Linnaeus, 1758
         125 Genus Coluber Linnaeus, 1758
         126 Genus Anguis Linnaeus, 1758
         127 Genus Amphisbaena Linnaeus, 1758
         128 Genus Caecilia Linnaeus, 1758
         128.0 Genus Coecilia Linnaeus, 1758 see Genus Caecilia Linnaeus, 1758