Igua is an extinct genus of iguanian lizards belonging to a group called Gobiguania that was endemic to the Gobi Desert during the Late Cretaceous. The type species Igua minuta was named in 1991 on the basis of a skull from the Barun Goyot Formation in Mongolia. The skull itself is very small, only 14 millimetres (0.55 in) long, and may have belonged to a juvenile given that it possesses a large fontanelle and that many of the bones are unfused. The snout-vent length of the individual (the total body length minus the tail) is estimated to have been 55 to 65 millimetres (2.2 to 2.6 in). Igua differs from related gobiguanians like Polrussia in having a more rounded skull. It is similar in appearance to the living genera Liolaemus and Tropidurus. The teeth are tricuspid and pleurodont, meaning they are attached to inner surfaces of the jaws.[1]
Below is a cladogram from Daza et al. (2012) showing the phylogenetic relationships of Igua:[2]
Iguania
†Hoyalacerta sanzi
†Huehuecuetzpalli mixtecus
†Pristiguana brasiliensis
Chamaeleontiformes
†Priscagamidae
Acrodonta
Iguanoidea (=Pleurodonta)
Silvaiguana
Hoplocercidae
Polychrotidae
†Gobiguania
†Polrussia mongoliensis
†Igua minuta
†Isodontosaurus gracilis
†Anchaurosaurus gilmorei
†Zapsosaurus sceliphros
†Saichangurvel davidsoni
†Temujinia ellisoni
†Ctenomastax parva
Euiguana
Corytophanidae
Terraiguana
Iguanidae
Crotaphytidae
Phrynosomatidae
Opluridae
†Uquiasaurus
Liolaemidae
Leiocephalus
Tropiduridae
^Borsuk-Białynicka, M.; Alifanov, V.R. "First Asiatic 'iguanid' lizards in the Late Cretaceous of Mongolia". Acta Palaeontologica Polonica. 36 (3): 325–342.
^Daza, J. D.; Abdala, V.; Arias, J. S.; García-López, D.; Ortiz, P. (2012). "Cladistic Analysis of Iguania and a Fossil Lizard from the Late Pliocene of Northwestern Argentina". Journal of Herpetology. 46: 104–119. doi:10.1670/10-112. hdl:11336/61054. S2CID 85405843.
Igua is an extinct genus of iguanian lizards belonging to a group called Gobiguania that was endemic to the Gobi Desert during the Late Cretaceous. The...
phylogenetic analysis published in 2012 indicated that three other lizard genera — Igua, Isodontosaurus, and Polrussia, all from Mongolia and all from the Late Cretaceous...
(CEDAE) was divided into four blocks and auctioned to Aegea (Águas do Rio) and Iguá; CEDAE remained in control of water collection and treatment of drinking...
Ita Baale Moro; Ita Baale Agbon-Ojodu II Yewa North Igua Near Central Mosque, Igua; Court Hall - Igua; Comm. Pry. School Igbo - Iju; Y. N. L. G. School...
− 1 {\displaystyle D'_{\mu }=\partial _{\mu }+(\partial _{\mu }U^{-1})U-igUA_{\mu }U^{-1}} or using U ( x ) = e i α ( x ) {\displaystyle U(x)=e^{i\alpha...
includes: Islas María Madre, María Magdalena, María Cleofas, and San Juanito. IGUA: Guadalupe Island, Gulf of California - México. RALI: Rocas Alijos, Gulf...
Tube's forces are ready to attack, she warns Takeru, but is captured by Igua. Brought before Zeba, Ial is sentenced to the Eternal Freeze, living in an...
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