1. Reptiles, Birds, & Mammals

2. Reptiles Class Reptilia Vertebrate with dry, scaly skin, lungs, and hard shelled eggs with several membranes (amniotic eggs) 3 chambered heart Cold blooded (ectotherm)

3. Groups of Reptiles Order Squamata : Lizards & Snakes

4. Order Crocodilia : alligators, crocodiles, & caimans,

5. Order Testudines: Turtles and Tortoises

6. Birds Class Aves Reptilelike animals with an outer covering of feathers Scales on walking legs Front limbs = wings 4 chambered heart Warm blooded (endotherm) Amniote eggs

7. Mammals Have mammary glands to nourish young Body hair 4 chambered hearts Warm blooded (endotherm) Grouped according to method of development

8. Groups of Mammals Egg laying mammals = montremes Duck-billed platypus & spiny anteaters

9. Marsupials : bear live young that complete development in pouch (marsupium) Kangaroos, koalas, & wombats

10. Placentals: named for placenta (structure formed when the embryos tissues join the tissues within the mothers body. Nutrients, gases, and waste are exchanged through the placenta Bats, bears, cows, humans and other primates, etc…..