1. Mammalian Adaptations

2. MONOTREMES “Egg laying”
Duckbilled Platypus
Anteater
Echidna

3. MARSUPIALS Premature babies develop in pouch
Found in Austrailia/ New Guinea
Kangaroo
Wallaby

4. MARSUPIALS
Only North American Marsupial
Oppossum

5. PLACENTAL Embryos nourished inside mother by placenta
95% of all mammals are placental
At least 18 orders

6. Teeth Incisors- Chisel like teeth for cutting
Canines- Pointed teeth for puncturing and tearing
Premolars- shred and grind
Molars- flat teeth for grinding, crushing

7. Specialized teeth vary with diet

8. Grass eaters have different teeth than carnivores

9. BALEEN
Thin keratin plates that hang from the roof of the mouth and screen food from water

10. Echolocation Bats can fly without eyes, but NOT without ears
Bats emit high frequency sound waves that bounce off objects
Can determine size, distance, direction, speed

11. RUMEN In cud chewers like cows, sheep, goats, giraffes
First chamber of stomach Cud can be re-chewed

12. CECUM In non cud chewers like horses, rabbits, rodents, elephants
Small pouch off small intestine containing bacteria to digest plants

13. Human appendix is vestigial cecum

14. PRIMATES Larger Brain Grasping hand 2 forward facing eyes Includes:
Gorillas
Monkeys
Lemurs

15. PRIMATES
Humans are primates too!

16. PINNIPEDS Carnivorous streamlined body flipper limbed Seals Walruses
Sea lions

17. UNGULATES Mammals with Hooves
Perissodactyla
Odd number of toes
Horses, zebras, rhinos
Artiodactyla
Even number of toes
moose, bison, deer, elk, goats, pigs, camels, sheep, cows

18. CETACEANS
Includes: whales, dolphins,
porpoises

19. PROBOSCIDEA Proboscis: Boneless trunked nose
Only 2 species Asian elephant
African elephant

20. CHIROPTERA
BATS
Only mammals that can fly