IV.Size V.Diet and Eating Habits I.Scientific Classification A. Class Reptilia.
Reptiles have scaly skin, breathe air with lungs, and have a three-chambered heart.
Most reptiles lay eggs, although some produce eggs that hatch internally. B. Order Testudines. This order includes all turtles and tortoises. C. Suborder Cryptodira. This suborder includes freshwater turtles, snapping turtles, tortoises, soft-shelled turtles, and sea turtles.