1. Geologic Time Scale notes…44

2. Geologic Time Scale…44

3. EON Largest group of the history of the Earth
First 3 eons = Precambrian time
4th eon is the Phanerozoic eon
EON

4. ERAS
Eons divided into eras.
Most recent eon is divided into three eras.
-Paleozoic
-Mesozoic
-Cenozoic

5. Paleozoic Era Beginning-ocean life End-reptiles, amphibians, ferns
Greatest extinction of all time

6. Mesozoic Era Dinosaurs
Some mammals, birds, and flowering plants evolved
Pangaea

7. Cenozoic Era
Current era
Mammals!!!

8. Geologic Time Scale Music Video