1. Warm-upWeek 17 1._____ was the major source of free oxygen in the atmosphere. a. molten rockc. green plants b. waterd. silicate minerals 1.Changing _____________ was the cause of the Paleozoic extinction. 2.A giant __________ was most likely the cause of the great Mesozoic extinction.

2. Cenozoic Era: Age of Mammals (65 MYA  Now.) 13.4 “RECENT LIFE.”

3. Cenozoic: Less Time Ago… 1.Better Fossils! 2.“Richer” History.

4. Cenozoic Land: Lots of Plate Movement New: –Mountains –Volcanoes –Earthquakes

5. Cenozoic Life: Plants: –Angiosperms –Flowers! Post-Dino Mammals –Humans!

6. Why Mammals kick-butt… 1.Born alive 2.Warm-blooded –Maintain body temp o 3.Hair Beat-out Reptiles!

7. Rhinoceros.

8. Indricotherium 20 ft tall 25 ft long 30 tons Late Cenozoic Mammal Extinction Largest die Why? - Humans…

9. Hunting Season?...

11. Relative Dating Review.