Squamata Snakes and Lizards Squamata is the dominant order of living reptiles composed of the lizards and snakes.The group first appeared in Jurassic times and today is found in all but the coldest regions.Various forms are adapted for burrowing,or aquatic lives,but most squamata are fundamentally terrestrial.There are about 4700 Recent species:2200 lizards and 2500 snakes. The most obvious feature of snakes is the absence of limbs.The entire body of a snake …
showed first 75 words of 1186 total

showed last 75 words of 1186 total
…feed on insects and worms. Members of the squamata show rather definate rhythms in their activities. In temperate regions seasonal cycles are correlated with temperatures and sexual activity,and hibernation occurs in the winter. General activity continues year around in tropic climates. Daily activity cycles are typical of most species and include a definate pattern of feeding,drinking ,resting,basking,and excreting. Most lizards are diurnal,and thier daily cycles are usually correlated with temperature.