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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
Cladus: Unidentata, Episquamata, Toxicofera
Subordo: Anguimorpha
Infraordo: Neoanguimorpha
Superfamilia: Diploglossa
Familiae: Anguidae - Anniellidae - Xenosauridae


Diploglossa is a clade of neoanguimorphs represented by the families Xenosauridae, Diploglossidae, Anniellidae and Anguidae, the latter three placed in the superfamily Anguioidea.[1][2][3][4] In the past the Chinese crocodile lizard was classified as a xenosaurid;[5] current molecular work has shown evidence the species related to varanoids in the clade Paleoanguimorpha.[1][2][6]

Below is the phylogeny of the neoanguimorph lineages after Pyron et al. (2013):[2]

Xenosauridae (knob-scaled lizards)


Diploglossidae (galliwasps)

Anniellidae (American legless lizards)

Anguidae (glass lizards and alligator lizards)


Vidal, Nicolas; Hedges, S. Blair (2009). "The molecular evolutionary tree of lizards, snakes, and amphisbaenians". Comptes Rendus Biologies. 332 (2–3): 129–39. doi:10.1016/j.crvi.2008.07.010. PMID 19281946.
Pyron; Burbrink; Wiens (2013). "A phylogeny and revised classification of Squamata, including 4161 species of lizards and snakes". BMC Evolutionary Biology. 13: 93. doi:10.1186/1471-2148-13-93. PMC 3682911. PMID 23627680.
Zheng, Yuchi; Wiens, John J. (2016). "Combining phylogenomic and supermatrix approaches, and a time-calibrated phylogeny for squamate reptiles (lizards and snakes) based on 52 genes and 4162 species". Molecular Phylogenetics and Evolution. 94 (Pt B): 537–547. doi:10.1016/j.ympev.2015.10.009. PMID 26475614.
Wiens, J. J.; Hutter, C. R.; Mulcahy, D. G.; Noonan, B. P.; Townsend, T. M.; Sites, J. W.; Reeder, T. W. (2012). "Resolving the phylogeny of lizards and snakes (Squamata) with extensive sampling of genes and species". Biology Letters. 8 (6): 1043–6. doi:10.1098/rsbl.2012.0703. PMC 3497141. PMID 22993238.
Gao, K.; Norell, M. (1998). "Taxonomic revision of Carusia (Reptilia, Squamata) from the late Cretaceous of the Gobi Desert and phylogenetic relationships of anguimorphan lizards". American Museum Novitates. 3230: 1–55. hdl:2246/3367.
Bhullar, B. A. S. (2011). "The power and utility of morphological characters in systematics: a fully resolved phylogeny of Xenosaurus and its fossil relatives (Squamata: Anguimorpha)". Bulletin of the Museum of Comparative Zoology. 160 (3): 65–181. doi:10.3099/0027-4100-160.3.65. S2CID 86328454.

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