Forelimb of Lizard
Kingdom: Animalia
Phylum: Chordata
Superclass: Tetrapoda
Class: Reptilia
Order: Squamata
Suborder: Lacertilia
Specimen Description
About the animal
Lizard (suborder Sauria), any of more than 5,500 species of reptiles belonging in the order Squamata. Lizards are scaly-skinned reptiles that are usually distinguished from snakes by the possession of legs, movable eyelids, and external ear openings. However, some traditional (that is, non-snake) lizards lack one or more of these features. For example, limb degeneration and loss has occurred in glass lizards (Ophisaurus) and other lizard groups. Movable eyelids have been lost in some geckos, skinks, and night lizards. External ear openings have disappeared in some species in the genera Holbrookiaand Cophosaurus. Most of the living species of lizards inhabit warm regions, but some are found near the Arctic Circle in Eurasia and others range to the southern tip of South America
Reference:
http://animal-world.com/encyclo/reptiles/information/lizardclassfamilies.php
http://www.biozoomer.com/2014/02/skeleton-of-fore-limbs-in-lizard-bird.html