Xenodermatoidea

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: Xenodermoidea
Familiae: Xenodermatidae
References

Savage, J.M. 2015. What are the correct family names for the taxa that include the snake genera Xenodermus, Pareas, and Calamaria?. Herpetological Review 46(4): 664–665. Reference page.
Vidal, N., Delmas, A.-S., David, P., Cruaud, C., Couloux, A. & Hedges, S.B. 2007. The phylogeny and classification of caenophidian snakes inferred from seven nuclear protein-coding genes. Comptes Rendus Biologies 330(2): 182–187. DOI: 10.1016/j.crvi.2006.10.001 Full article (PDF). Reference page.