![]() ![]() Members of the Iguaninae include the green iguana ( Iguana iguana) and marine iguana ( Amblyrhynchus cristatus). The subfamilies within Iguanidae can be described in more detail. That trait is pleurodont teeth, which lie in inner-jaw grooves rather than in sockets. However, the family does have one characteristic that sets it apart from the other Iguania families. Members of the Iguanidae family range from squat, toadlike horned lizards ( Phrynosoma spp.) that fit in the palm of a hand, to iguanas ( Iguana spp.) that are as long as a man is tall, and long-tailed and sleek anoles often seen climbing on a window screen. This large family contains species with varied appearances. Some taxonomists now classify each Iguanidae subfamily as a separate family, in which case the endings of the sub-family names listed above end in "-idae" rather than "-inae." Physical characteristics These three families, collectively grouped as Iguania, diverged within the snake and lizard lineage very early in their evolution. The Iguanidae family is most closely related to the families Agamidae of Africa, Asia, and Australia, and the family Chamaeleonidae, mainly of Africa and Madagascar. Tropidurinae, the ground lizards of Neotropical South America and the Antilles Islands of the West Indies.Phrynosomatinae, the tree, side-blotched, sand, spiny, and horned lizards.Iguaninae, the true iguanas and spinytails.Hoplocercinae, a small assemblage of South American tropical lizards.Crotaphytinae, the leopard and collared lizards.Corytophaninae, the casquehead lizards of Central America.The Iguanidae is a large family of some 860–900 species and nearly 70 genera. Mainly a New World family, extending into much of North America, throughout Central America, and into South America some species exist in other areas, including Madagascar and the islands of Polynesia Evolution and systematics Small to large lizards, the majority of which are terrestrial and oviparous, that are marked by pleurodont teeth, which lie in inner-jaw grooves rather than in socketsġ.6–30 in (30–750 cm) in snout-vent length (svl), and some have tails reaching twice the svlĭiverse, with most species occurring either in arid locales or wooded habitatsĮxtinct: 2 species Critically Endangered: 6 species Endangered: 4 species Vulnerable: 12 species Lower Risk/Near Threatened: 1 species Data Deficient: 17 species ![]()
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