[Animalia] Linnaeus, 1758 - animals
   Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Bilateralia
         Chordata Bateson, 1885 - chordates
           Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
             Reptilia Linnaeus, 1758 - reptiles
               Lepidosauria Duméril & Bibron, 1839
                 Squamata Oppel, 1811
                   Serpentes Linnaeus, 1758 - snakes
                     Caenophidia Hoffstetter, 1939 see Superfamily Xenophidia
                       Crotalidae Oppel, 1811 see Subfamily Crotalinae Oppel, 1811
                         Trimeresurus Lacepède, 1804