1. Reptiles (pelycosaurs - synapsid skull)

2. Therapsids evolved from pelycosaurs - secondary palate, fur

3. First mammals came the same time that dinosaurs did - when dinos went extinct mammals took over

1. Prototheria - oviparous

2. Theria - viviparous

1. Hair

2. Nursing and parental care

3. Specialized teeth

4. High body temperature - enoddthermic - can be in many climates, but have to eat more

5. Reproduction

1. Insulation - guard hairs and undercoat
2. Camoflauge
3. Sensory
4. Defense
5. Warning
6. Protection
7. Mating

1. Incisors - cutting
2. Canines - tearing
3. Premolars - scraping
4. Molars - grinding

1. Monotremes - egg laying
2. Marsupials - immature when born, grow in pouch
3. Placental - young grow in placenta (sac that insulate)