Iguania

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Iguania
Temporal range: Late Triassic - recent, 220–0Ma
Leiocephalus personatus, a species of iguanian
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Iguania
Families

Agamidae
Chamaeleonidae
Iguanidae

Iguania is a suborder of Squamata (snakes and lizards) that contains the iguanas, chameleons, agamids, and New World lizards, such as anoles and phrynosomatids. Using morphological features as a guide to evolutionary relationships, Iguania is believed to form the sister group to the remainder of the Squamata. However, molecular information has placed Iguania well within the Squamata as sister taxa to the Anguimorpha and closely related to snakes.[1] Iguanians are largely arboreal and have primitively fleshy, nonprehensile tongues, although the condition is highly modified in chameleons. The clade currently includes these families:[2]

  • Subfamily Tropidurinae – tropidurine lizards
    • subclade of Tropidurinae Leiocephalus: curly-tailed lizards
    • subclade of Tropidurinae Liolaemini: South American swifts
    • subclade of Tropidurinae Tropidurini: neotropical ground lizards

Phylogeny[edit]

Below is a cladogram from the phylogenetic analysis of Daza et al. (2012) (a morphological analysis), showing the interrelationships of extinct and living iguanians:

Iguania

Hoyalacerta sanzi





Huehuecuetzpalli mixtecus



Pristiguana brasiliensis




Chamaeleontiformes
Priscagamidae

Mimeosaurus crassus




Priscagama gobiensis



Phrynosomimus asper




Acrodonta

Physignathus





Agama




Uromastyx



Leiolepis






Rhampholeon



Brookesia






Iguanoidea (=Pleurodonta)

Gobiguania

Polrussia mongoliensis



Igua minuta



Isodontosaurus gracilis




Anchaurosaurus gilmorei



Zapsosaurus sceliphros





Saichangurvel davidsoni




Temujinia ellisoni



Ctenomastax parva





Silvaiguana
Hoplocercidae

Enyaloides




Morunasaurus



Hoplocercus




Polychrotidae


Polychrus gutturosus




Polychrus marmoratus




Polychrus femoralis



Afairiguana avius








Leiosaurus




Anisolepis




Enyalius



Pristidactylus







amber anole




Anolis occultus




Anolis heterodermus



Anolis vermiculatus









Euiguana
Corytophanidae

Laemanctus




Basiliscus



Corytophanes




Terraiguana


Iguanidae


Crotaphytidae

Crotaphytus



Gambelia





Phrynosomatidae

Phrynosoma




Uta





Petrosaurus



sand lizards





Sceloporus



Urosaurus







Opluridae

Chalarodon madagascariensis




Oplurus quadrimaculatus B




Oplurus quadrimaculatus A



Oplurus cyclurus







Uquiasaurus



Liolaemidae

Phymaturus




Ctenoblepharis



Liolaemus






Leiocephalus


Tropiduridae

Stenocercus




Tropidurus



Uranoscodon















References[edit]

  1. ^ http://www.cnah.org/pdf_files/518.pdf
  2. ^ 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