Class Reptilia
-lizards, snakes, alligators, turtles, dinosaurs
-entirely terrestrial
-scaly, dry, thick skin
-internal skeleton with legs under body
-independent of water for reproduction
-amniotic egg
-ectothermic
-well developed kidneys
-three chamber heart except for alligators and crocodiles which have a four chamber
heart
-digestion includes a mouth, esophagus, stomach, intestines, anus
-heat sensitive organs
-Jacobsons organ, taste the air
Order Chilonia, turtles, no teeth but a beak
Order Crocodilia, crocodiles, largest reptile, haven't changed much since
evolution
Order Squimada, snakes and lizards
Class Aves
-birds
-evolution from dinosaurs
-feathers, modified scales used for flying and insulation
-wings used for flight
-skeletal: large sternum, bones are not very solid, no teeth, one ovary
-have air sacs which aloow a one way flow through lungs
-four chamber heart
Endothermic, regulates body temperature. The benefit of this is that they can live
anywhere. The costs are energy and evaporative cooling/shivering
Sensory Organs
Their vision and avditory are very good, their smell is bad. They have magnetic detection.
The study of birds is Ornithology
