Reptilia - Squamata - Colubridae
Parent taxon: Colubridae according to O. W. M. Kuhn 1966
See also Uetz 2005
Sister taxa: Abastor, Aglypha, Alsophis, Apostolepis, Bascanium, Carphophis, Cemophora, Chilomeniscus, Chionactis, Coluber owenii, Colubrinae, Coniophanes, Contia, Cyclophis, Dakotaophis, Dendrelaphis, Dromicus, Dryinoides, Drymarchon, Eutaenia, Farancia, Gyalopion, Haldea, Helicops, Hierophis, Hispanophis, Homalopsinae, Hypsiglena, Leioheterodon, Lodia, Lycodon, Malpolon, Mionatrix, Naja sauvagei, Natricinae, Ophibolus, Opisthoglypha, Osceola, Palaelaphis, Palaeomalpolon, Palaeonatrix, Paleofarancia, Paraoxybelis, Phimothyra, Pollackophis, Proteroglypha, Pseudoboa, Pseudocemophora, Pylmophis, Rhinechis, Rhinocheilus, Scaptophis, Sibon, Sonora, Spilotes, Storeria, Tachyophis, Tantilla, Thamnophis, Tretanorhinus, Trimorphodon, Tropidoclonium, Tropidonotus, Xenodontinae, Zamenis
Subtaxa: Diadophis Leptodeira Rhadinaea
Ecology: ground dwelling carnivore
Distribution: