Iguania

The Iguania are the suborder of Squamata (snakes and lizards) that contains the iguanas, chameleons, agamids, and New World lizards, such as anoles and Phrynosomatinae. The Iguania were previously believed to form the sister group to the remainder of the Squamata based on morphological characteristics, but molecular information has placed Iguania well within the Squamata as sister taxa to the Anguimorpha and closely related to snakes. They are largely arboreal and have primitively fleshy, nonprehensile tongues, but this condition is obviously highly modified in the chameleons. The clade currently includes these families: