REPTILE BODY COVERING.
"reptiles body covering are scales. their scales are rough, and strong skin. all scales are waterproof. these are three image of a reptiles scale." lizard scales vary in form from tubercular to plate like, or imbricate. these scales, which on the surface are composed of horny epidermis, may have bony plates underlying them, these plates are called osteoderms. snakes are entirely covered with scales or various shape and size. snakes periodically moult their scaly skins and acquire new ones. In crocodile and turtle the dermal armour is formed from the deeper dermis rather than the epidermis, and do not form the same sort of overlapping structure as snake scales." some reptiles body covering has cool patterns like the middle image".
The skin of crocodilians is thick and cornified, and is clad in non-overlapping scales known as scutes, arranged in regular rows and patterns. These scales are continually being produced by cell division in the underlying layer of the epidermis, the stratum germinativum, and the surface of individual scutes sloughs off periodically. The outer surface of the scutes consists of the relatively rigid beta-keratin while the hinge region between the scutes contains only the more pliable alpha-keratin".
http://en.wikipedia.org/wiki/Crocodilia
The skin of crocodilians is thick and cornified, and is clad in non-overlapping scales known as scutes, arranged in regular rows and patterns. These scales are continually being produced by cell division in the underlying layer of the epidermis, the stratum germinativum, and the surface of individual scutes sloughs off periodically. The outer surface of the scutes consists of the relatively rigid beta-keratin while the hinge region between the scutes contains only the more pliable alpha-keratin".
http://en.wikipedia.org/wiki/Crocodilia