Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Reptilia Linnaeus, 1758 - reptiles
               Subclass Lepidosauria Duméril & Bibron, 1839
                 Order Squamata Oppel, 1811
                   Suborder Serpentes Linnaeus, 1758 - snakes
                     Infraorder Caenophidia Hoffstetter, 1939 see Superfamily Xenophidia
                       Family Colubridae Oppel, 1811 - colubrids
                         01 Subfamily Xenoderminae see Subfamily Xenodermatinae
                         02 Subfamily Sibynophiinae
                         03 Subfamily Xenodontinae (Bonaparte, 1845) see Subfamily Dipsadinae Guenther, 1858
                         04 Subfamily Natricinae Bonaparte, 1838 - water snakes
                         05 Subfamily Colubrinae Oppel, 1811
                         06 Subfamily Calamariinae
                         07 Subfamily Lycodontinae see Subfamily Colubrinae Oppel, 1811
                         08 Subfamily Pareinae - Asian snail-eating snakes see Subfamily Pareatinae
                         09 Subfamily Dipsadinae Guenther, 1858 - American snail-eating snakes
                         10 Subfamily Dasypeltinae - African egg-eating snakes see Subfamily Colubrinae Oppel, 1811
                         11 Subfamily Homalopsinae (Cope, 1864) see Family Homalopsidae Jan, 1863
                         12 Subfamily Boiginae see Subfamily Colubrinae Oppel, 1811