Characteristics
Reptiles are characterized as having rough, dry, and scaly skin. They produce an amniotic egg. The word reptile derives from the Latin repere, which means "to creep".
Major Groups
The major extant groups include Amphisbaenians, Crocodilians, Lizards, Snakes, Sphenodon (i.e. the tuataras of New Zealand), and Turtles.