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''Igua'' is an extinct genus of iguanian lizard belonging to a group called Gobiguania that was endemic to the Gobi Desert during the Late Cretaceous. The type species ''Igua minta'' was named in 1991 on the basis of a skull from the Barun Goyot Formation in Mongolia. The skull itself is very small, only 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 . ''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. Below is a cladogram from Daza ''et al.'' (2012) showing the phylogenetic relationships of ''Igua'': |2= |label2=Iguanoidea (=Pleurodonta) |2= |5= }} }} }} |label2=Euiguana |2= }} }} }} }} }} }} }} }} }} }} ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Igua」の詳細全文を読む スポンサード リンク
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