1. 3 Subclasses within the class Mammalia:
Prototheria or Monotremes (3 species)
Metatheria or Marsupials (275 species)
Eutheria or placental mammals (3982 species)

2. Monotremes Most primitive mammals
Only 3 species: duck-billed platypus and two spiny anteaters, or echidnas
Oviparous; eggs with a leathery shell; mothers nourish their young with milk after young hatch
Lack nipples
Live only in Australia & New Guinea
The name monotreme means one-holed (i.e.cloaca)

3. Echidna & Duck-billed Platypus

5. Marsupials Viviparous Immature young are incubated in the pouch
Tasmanian wolf

6. Flying Squirrel

7. Tasmanian Devil

8. Marsupial Mouse

9. Koala (Aboriginal for no drink …They sleep for 19 hrs/day)

10. Wombat

11. Kangaroo

12. Wallaby

13. Marsupial Pouch

15. Opossum

16. The only time you see an opossum…