Rhineura

Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Lepidosauromorpha
Superordo: Lepidosauria
Ordo: Squamata
Subordo: Serpentes
Infraordo: Caenophidia
Superfamilia: Colubroidea

Familia: Dipsadidae
Subfamilia: Xenodontinae
Tribus: Alsophiini - Amnesteophiini - Dipsadini - Xenodontini ...
Overview of genera (15)

Alsophis – Amnesteophis – Antillophis – Arrhyton – Borikenophis – Caraiba – Cubophis – Darlingtonia – Dipsas – Haitiophis – Manolepis – Ialtris – Magliophis – Ocyophis – Schwartzophis – Uromacer
Adelphicos - Alsophis - Amastridium - Antillophis - Apostolepis - Arrhyton - Atractus - Boiruna - Calamodontophis - Carphophis - Cercophis - Chersodromus - Clelia - Coniophanes - Conophis - Contia - Crisantophis - Cryophis - Darlingtonia - Diadophis - Diaphorolepis - Dipsas - Ditaxodon - Drepanoides - Echinanthera - Elapomorphus - Emmochliophis - Enuliophis - Enulius - Eridiphas - Erythrolamprus - Farancia - Geophis - Gomesophis - Helicops - Heterodon - Hydrodynastes - Hydromorphus - Hydrops - Hypsiglena - Hypsirhynchus - Ialtris - Imantodes - Leptodeira - Lioheterophis - Liophis - Lystrophis - Manolepis - Ninia - Nothopsis - Oxyrhopus - Phalotris - Philodryas - Phimophis - Plesiodipsas - Pliocercus - Pseudablabes - Pseudoboa - Pseudoeryx - Pseudoleptodeira - Pseudotomodon - Psomophis - Ptychophis - Rhachidelus - Rhadinaea - Rhadinophanes - Saphenophis - Sibon - Sibynomorphus - Siphlophis - Sordellina - Synophis - Tachymenis - Taeniophallus - Tantalophis - Thamnodynastes - Thermophis - Tomodon - Tretanorhinus - Trimetopon - Tropidodipsas - Tropidodryas - Umbrivaga - Uromacer - Uromacerina - Urotheca - Waglerophis - Xenodon - Xenopholis - Xenoxybelis

Name

Xenodontinae Dunn, 1928

References

Curcio, F.F.; Piacentini, V.de Q.; Fernandes, D.S. 2009: On the status of the snake genera Erythrolamprus Boie, Liophis Wagler and Lygophis Fitzinger (Serpentes, Xenodontinae). Zootaxa, 2173: 66–68. Abstract & excerpt
Myers, C.W. 2011: A new genus and new tribe for Enicognathus melanauchen Jan, 1863, a neglected South American snake (Colubridae: Xenodontinae), with taxonomic notes on some Dipsadinae. American Museum novitates, (3715) DOI: 10.1206/3715.2
Myers, C.W.; McDowell, S.B. 2014: New taxa and cryptic species of Neotropical snakes (Xenodontinae), with commentary on hemipenes as generic and specific characters. Bulletin of the American Museum of Natural History, (385) DOI: 10.1206/862.1 Reference page.
Zaher, H., Grazziotin, F.G., Cadle, J.E., Murphy, R.W., Moura-Leite, J.C. & Bonatto, S.L. 2009. Molecular phylogeny of advanced snakes (Serpentes, Caenophidia) with an emphasis on South American xenodontines: a revised classification and descriptions of new taxa. Papéis Avulsos de Zoologia 49(11): 115–153. DOI: 10.1590/S0031-10492009001100001 Open access Reference page.

Xenodontinae is a subfamily of snakes in the family Dipsadidae.[2][3]

The subfamily Xenodontinae encompasses a number of rear-fanged (opisthoglyphous), mildly venomous snake genera found in South America and the Caribbean. Members of the subfamily Xenodontinae are by definition closer relatives to the genus Xenodon than they are to the genus Dipsas. Some authors consider Xenodontinae and Dipsadinae to be synonymous. If the two names are used synonymously, then Dipsadinae is the correct name because it is older.[4]
Genera

Alsophis (includes Dromicus)
Apostolepis
Arrhyton
Boiruna
Caaeteboia
Calamodontophis
Caraiba (formerly Antillophis)
Clelia
Conophis
Ditaxodon Hoge, 1958
Drepanoides
Echinanthera
Elapomorphus
Erythrolamprus (includes Liophis and Umbrivaga)
Gomesophis
Helicops
Hydrodynastes
Hydrops
Hypsirhynchus (includes Darlingtonia)
Ialtris
Lygophis
Magliophis
Manolepis
Mussurana
Oxyrhopus
Phalotris
Philodryas (including Pseudablabes)
Phimophis
Pseudalsophis
Pseudoboa Schneider, 1801
Pseudoeryx
Pseudotomodon
Psomophis
Ptychophis
Rhachidelus
Saphenophis
Siphlophis
Tachymenis
Taeniophallus
Thamnodynastes
Tomodon
Tropidodryas
Uromacer
Xenodon (includes Lystrophis and Waglerophis)

When used as a subfamily of Dipsadidae, Xenodontinae does not include genera placed in the subfamily Dipsadinae (e.g. Dipsas, Sibon, Coniophanes, Atractus, Geophis, Hypsiglena, Imantodes, Leptodeira, Ninia, Rhadinaea, Urotheca) nor the North American relict genera (Heterodon, Farancia, Diadophis, Carphophis, Contia), nor the Asian genus Thermophis, because these are too distantly-related to Xenodon.[2][3]

References

"Xenodontinae". ITIS (Integrated Taxonomic Information System). www.itis.gov.
Grazziotin, Felipe G.; Zaher, Hussam; Murphy, Robert W.; Scrocchi, Gustavo; Benavides, Marco A.; Zhang, Ya-Ping; Bonatto, Sandro L. (2012). "Molecular phylogeny of the New World Dipsadidae (Serpentes: Colubroidea): a reappraisal". Cladistics. 28 (5): 437–459. doi:10.1111/j.1096-0031.2012.00393.x.
Zaher, H.; Grazziotin, F. G.; Cadle, J. E.; Murphy, R. W.; Moura-Leite, J. C.; Bonatto, S. L. (2009). "Molecular phylogeny of advanced snakes (Serpentes, Caenophidia) with an emphasis on South American Xenodontines: A revised classification and descriptions of new taxa". Papéis Avulsos de Zoologia (São Paulo). 49 (11): 115–153. doi:10.1590/s0031-10492009001100001.
Pyron, R. A.; Burbrink, F. T.; Colli, G. R.; De Oca, A. N. M.; Vitt, L. J.; Kuczynski, C. A.; Wiens, J. J. (2011). "The phylogeny of advanced snakes (Colubroidea), with discovery of a new subfamily and comparison of support methods for likelihood trees" (PDF). Molecular Phylogenetics and Evolution. 58 (2): 329–342. doi:10.1016/j.ympev.2010.11.006. PMID 21074626. "Finally, we follow Zaher et al. (2009) in using the name Dipsadinae (Bonaparte, 1840) to refer to Xenodontinae (Bonaparte, 1845) of Lawson et al. (2005) and previous authors, based on priority."