1. Mammals

2. Section 1 Five key characteristics Some hair
Diverse & specialized teeth
Endothermic
Mammary Glands
placenta

3. Section 1 Mammals have diverse, specialized teeth Molars Incisors
Premolars
canine

4. Section 1 Mammary glands are used for milk production
Weaning is done when baby animal can feed on their own

5. Section 2 Today’s Mammals
Monotremes
Most primitive
Order of Monotremata
Three living species
Platypus
Two species of Echidna

6. Marsupials Include wombats, kangaroos, wallaroos, koalas, and opossums
Are born days or weeks after fertilization and fully develop in a pouch

7. Placental Mammals
Placenta - allows diffusion of nutrients and oxygen into the fetus
Gestation Period - time when fetus is developing

8. Today’s Placentals Rodentia 40% of placentals
Teeth grow continually and are used for gnawing
Mice, rat, squirrel

9. Bats the only mammal capable of flight
Chiroptera
Bats the only mammal capable of flight

10. Includes the mighty shrew
Insectivora
Eats insects
Includes the mighty shrew

11. Include cats, dogs, bears, raccoons
Carnivora
Eat mostly meat
Include cats, dogs, bears, raccoons

12. Have flippers, insulating layer of blubber Include the walrus
Pinnipedia
Marine carnivores
Have flippers, insulating layer of blubber
Include the walrus

13. Primates
Monkey, human
Most advanced

14. Are called ungulates with even # of toes Have a rumen and chew cud
Artiodactyla
Are called ungulates with even # of toes
Have a rumen and chew cud
Includes pigs, giraffes, sheep, cattle

15. Ungulates with an odd # of toes Include horse, zebras, rhino
Perissocactyla
Ungulates with an odd # of toes
Include horse, zebras, rhino

16. Dolphins, porpoises, whale have a plow hole used to breath
Cetacea
Live in water
Dolphins, porpoises, whale
have a plow hole used to breath

17. Lagomorpha Rabbits and hairs Teeth grow all the time

18. Manatees or called the sea cow
Sirenia
Barrel-shaped body
Manatees or called the sea cow

19. Elephants the largest on land
Proboscidea
Elephants the largest on land