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 Crotalidae Oppel, 1811
see Subfamily Crotalinae Oppel, 1811
Genus Agkistrodon de Beauvois, 1799
Agkistrodon piscivorus (Lacépède, 1789) - cottonmouth