Iguanidae

Iguanidae is a family of iguanian lizards that includes iguanas, chuckwallas, and several related groups. Its members occur mainly in the Americas and nearby islands.

Iguania: Iguania is a major clade of lizards that includes iguanas, chameleons, and agamids. Iguanidae belongs within this broader lizard lineage.
Marine iguana: The marine iguana is a Galápagos lizard that feeds on algae in the sea. It is a distinctive iguanid adapted to foraging underwater.
Iguanidae taxonomy: Iguanidae taxonomy is the scientific classification of iguanids and their internal evolutionary relationships. Family boundaries and subgroups have changed as anatomical and genetic evidence accumulated.
Agamidae: Agamidae is a family of Old World iguanian lizards that includes bearded dragons and agamas. Agamids resemble iguanids but are a separate major iguanian family, largely native to the Old World.
Squamata: Squamata is the reptile order comprising lizards, snakes, and amphisbaenians. This order provides the larger classification containing Iguanidae.
Green iguana: The green iguana is a large, mostly herbivorous lizard native to Central and South America and the Caribbean. It is among the best-known iguanid species and widely kept in captivity.
Phylogenetics: Phylogenetics is the study of evolutionary relationships among organisms. Phylogenetic analyses test which living lizard groups belong within Iguanidae.
Chamaeleonidae: Chamaeleonidae is a family of lizards known for independently mobile eyes, grasping feet, and projectile tongues. Chameleons are another distinct iguanian family, with specialized traits unlike most iguanids.
Reptile scales: Reptile scales are keratinized skin structures that protect the body and help limit water loss. Scale structure is a visible feature shared across iguanid species.
Chuckwalla: Chuckwallas are stocky desert lizards that wedge themselves into rock crevices when threatened. They represent a distinctive iguanid lineage adapted to arid rocky habitats.

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