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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

Familia: Anguidae
Subfamilia: Gerrhonotinae
Genus: Gerrhonotus
Species (9): G. farri – G. infernalis – G. lazcanoi – G. liocephalus – G. lugoi – G. mccoyi – G. ophiurus – G. parvus – G. rhombifer

Gerrhonotus Wiegmann, 1828: 379

Type species: Gerrhonotus tesselatus Wiegmann, 1834, by subsequent designation by Fitzinger (1843: 21).


Pterogastenes Peale & Green, 1829: 234 [synonymized by Gray (1845: 53)]
Type species: Scincus ventralis Peale & Green, 1829, by monotypy.
Coloptychon Tihen, 1949: 584 [synonymized by García-Vázquez, Nieto-Montes de Oca, Bryson, Schmidt-Ballardo & Pavón-Vázquez (2018: 1650)]
Type species: Gerrhonotus rhombifer Peters, 1877, by original designation and monotypy.

Primary references

Wiegmann, A.F.A. 1828. Beyträge zur Amphibienkunde (in German). Isis von Oken 21(4): 364–383. BHL Reference page.
Peale, T.R. & Green, J. 1830. Description of two new species of the Linnaean genus Lacerta. Journal of the Academy of Natural Sciences of Philadelphia 6: 231–234. BHL
Fitzinger, L. 1843. Systema Reptilium. Fasciculus primus. Amblyglossae. Braumüller et Seidel: Wien. vi + 106 pp. BHL Reference page.
Tihen, J.A. 1949. The Genera of Gerrhonotine Lizards. The American Midland Naturalist 41(3): 580–601. DOI: 10.2307/2421775 Paywall; JSTOR Hybrid open access journal Reference page.
Gray, J.E. 1845. Catalogue of the specimens of lizards in the collection of the British Museum. Trustees of die British Museum/Edward Newman: London. xxvii + 289 pp. BHL Reference page.
García-Vázquez, U.O., Nieto‐Montes de Oca, A., Bryson, Jr., R.W., Schmidt‐Ballardo, W. & Pavón-Vázquez, C.J. 2018. Molecular systematics and historical biogeography of the genus Gerrhonotus (Squamata: Anguidae). Journal of Biogeography 45(7): 1640–1652. DOI: 10.1111/jbi.13241 Reference page.

Additional references

Good, D.A. 1994. Species Limits in the Genus Gerrhonotus (Squamata: Anguidae) . Herpetological Monographs 8: 180–202. DOI: 10.2307/1467080 Paywall; JSTOR Hybrid open access journal Reference page.
Banda-Leal, J., Nevárez-de los Reyes, M. & Bryson Jr., R.W. 2017. A New Species of Pygmy Alligator Lizard (Squamata: Anguidae) from Nuevo León, México. Journal of Herpetology 51(2): 223–226. DOI: 10.1670/15-168 Reference page.
García-Vázquez, U.O., Contreras-Arquieta, A., Trujano-Ortega, M., & Nieto‐Montes de Oca, A. 2018. A New Species of Gerrhonotus (Squamata: Anguidae) from the Cuatro Ciénegas Basin, Coahuila, Mexico. Herpetologica 74(3): 269–278. DOI: 10.1655/HERPETOLOGICA-D-17-00013 Reference page.


Uetz, P. & Hallermann, J. 2022. Gerrhonotus . The Reptile Database. Accessed on 1 November 2018.

Vernacular names
English: Eastern Alligator Lizards
español: Lagartijas Caimán

Gerrhonotus is a genus of anguid lizards that are commonly referred to as alligator lizards, due to a vague resemblance to an alligator. Along with glass lizards (Ophisaurus) and many other lizards, alligator lizards have the ability to regrow their tail.

Species and subspecies

There are nine recognized species in the genus Gerrhonotus. One species has recognized subspecies.[1]

Gerrhonotus farri Bryson & Graham, 2010 – Farr's alligator lizard[2]
Gerrhonotus infernalis Baird, 1859 – Texas alligator lizard
Gerrhonotus lazcanoi Banda-Leal, Nevárez-de los Reyes & Bryson, 2017
Gerrhonotus liocephalus Wiegmann, 1828 – smooth-headed alligator lizard, Texas alligator lizard, Wiegmann's alligator lizard
Gerrhonotus liocephalus austrinus Hartweg & Tihen, 1946
Gerrhonotus liocephalus liocephalus Wiegmann, 1828
Gerrhonotus liocephalus loweryi Tihen, 1948 – Lowery's alligator lizard[2]
Gerrhonotus lugoi C.J. McCoy, 1970 – Lugo's alligator lizard[2]
Gerrhonotus mccoyi García-Vázquez, Contreras-Arquieta, Trujano-Ortega & Nieto-Montes De Oca, 2018
Gerrhonotus ophiurus Cope, 1867
Gerrhonotus parvus Knight & Scudday, 1985 – pygmy alligator lizard
Gerrhonotus rhombifer (W. Peters, 1876) – isthmian alligator lizard


"Gerrhonotus ". The Reptile Database.

Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. (Gerrhonotus farri, p. 88; G. liocephalus loweryi, p. 161; G. lugoi, p. 162).

External links

"Gerrhonotus ". Integrated Taxonomic Information System.

Further reading

Goin CJ, Goin OB, Zug GR (1978). Introduction to Herpetology, Third Edition. San Francisco: W.H. Freeman and Company. xi + 378 pp. ISBN 0-7167-0020-4. (Genus Gerrhonotus, pp. 292, 294).
Wiegmann AF (1828). "Beyträge zur Amphibienkunde". Isis von Oken 21 (4): 364–383. (Gerrhonotus, new genus, p. 379). (in German and Latin).

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