Molecular Biology and Genetics
Statistics of barcoding coverage
|Specimen Records:||149||Public Records:||31|
|Specimens with Sequences:||100||Public Species:||16|
|Specimens with Barcodes:||98||Public BINs:||21|
|Species With Barcodes:||35|
Several classification schemes have been used to define the structure of this family. The "historical" classification recognized all New World iguanians, plus Brachylophus and the Madagascar oplurines, as informal groups and not as formal subfamilies. 
Macey et al. (1997) in their analysis of molecular data for iguanian lizards recovered a monophyletic Iguanidae and formally recognized the eight families proposed by Frost and Etheridge (1989) as subfamilies of Iguanidae.
Schulte et al. (2003) reanalyzed the morphological data of Frost and Etheridge in combination with molecular data for all major groups of Iguanidae and recovered a monophyletic Iguanidae, but the subfamilies Polychrotinae and Tropidurinae were not monophyletic. The phylogenetic classification of Iguania from this work is the current and most generally accepted classification of iguanid lizards.
- Informal grouping Anoloids: anoles, leiosaurs, Polychrus
- Informal grouping Basiliscines: casquehead lizards
- Informal grouping Crotaphytines: collared and leopard lizards
- Informal grouping Iguanines: marine, Fijian, Galapagos land, spinytail, rock, desert, green, and chuckwalla iguanas
- Informal grouping Morunasaurs: wood lizards, clubtails
- Informal grouping Oplurines: Madagascan iguanids
- Informal grouping Sceloporines: earless, spiny, tree, side-blotched and horned lizards
- Informal grouping Tropidurines: curly-tailed lizards, South American swifts, neotropical ground lizards
- Informal grouping Trobidurines: curly-tailed lizards, South American swifts, neotropical ground lizards
Frost et al. (1989) classification of iguanas
- Genus Amblyrhynchus – Galápagos marine iguana
- Genus Brachylophus – Fijian/Tongan iguanas
- Genus Conolophus – Galápagos land iguana
- Genus Ctenosaura – spinytail iguanas
- Genus Cyclura – West Indian rock iguanas
- Genus Dipsosaurus – desert iguana
- Genus Iguana – green and Lesser Antillean iguanas
- Genus Sauromalus – chuckwallas
- Genus Armandisaurus (extinct chuckwalla)
- Genus Gangiguana (extinct)
- Genus Lapitiguana (extinct giant Fijian iguana)
- Genus Pumila (extinct Palm Springs iguana)
- Subfamily Corytophaninae: casquehead lizards
- Subfamily Crotaphytinae: collared and leopard lizards
- Subfamily Hoplocercinae: wood lizards, clubtails
- Subfamily Iguaninae: marine, Fijian, Galapagos land, spinytail, rock, desert, green, and chuckwalla iguanas
- Subfamily Oplurinae: Madagascan iguanids
- Subfamily Phrynosomatinae: earless, spiny, tree, side-blotched and horned lizards
- Subfamily Polychrotinae: anoles, leiosaurs, Polychrus
- Subfamily Tropidurinae: curly-tailed lizards, neotropical ground lizards, South American swifts
Here families and subfamilies are proposed as clade names, but may be recognized under the traditional Linnean nomenclature.
- Corytophaninae: casquehead lizards
- Crotaphytinae: collared and leopard lizards
- Hoplocercinae: wood lizards, clubtails
- Iguaninae: marine, Fijian, Galapagos land, spinytail, rock, desert, green, and chuckwalla iguanas
- Oplurinae: Madagascan iguanids
- Phrynosomatinae: earless, spiny, tree, side-blotched and horned lizards
- Polychrotinae: anoles, leiosaurs, Polychrus
- Tropidurinae: curly-tailed lizards, neotropical ground lizards, South American Swifts
- Bauer, Aaron M. (1998). Cogger, H.G. & Zweifel, R.G., ed. Encyclopedia of Reptiles and Amphibians. San Diego: Academic Press. pp. 140–142. ISBN 0-12-178560-2.
- Etheridge, Richard & Kevin de Queiroz (1988). Estes, R. & Pregill, G., ed. Phylogenetic Relationships of the Lizard Families, Essays Commemorating Charles L. Camp. Stanford, California: Stanford University Press. pp. 283–368. ISBN 0-8047-1435-5.
- D.R. Frost & R. Etheridge (1989) «A phylogenetic analysis and taxonomy of iguanian lizards (Reptilia: Squamata)» Univ. Kansas Mus. Nat. Hist. Misc. Publ. 81
- D.R. Frost, R. Etheridge, D. Janies & T.A. Titus (2001) Total evidence, sequence alignment, evolution of polychrotid lizards, and a reclassification of the Iguania (Squamata: Iguania) American Museum Novitates 3343: 38 pp.
- Macey, J. R., A. Larson, N. B. Ananjeva, and Papenfuss, T. J. (1997) [Evolutionary shifts in three major structural features of the mitochondrial genome among iguanian lizards.] Journal of Molecular Evolution 44: 660-674
- Schulte II, J. A., J. P. Valladares, and A. Larson. (2003) [Phylogenetic relationships within Iguanidae inferred using molecular and morphological data and a phylogenetic taxonomy of iguanian lizards.] Herpetologica 59: 399-419
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