Ice Ages - When

1
Ice Ages - When

• Proterozoic 600 800 million years ago
• Ordovician and Silurian 430 460 million years
  ago
• Pennsylvanian and Permian 250 350 million
  years ago
• Neogene to Quaternary The last 4 million years

2
The Ice Age
3
Ice Age Affects...
4
Where?
5
Mastodon

• Mammal
• 6.5 10 feet tall
• Herbivores
• Related to Elephant and Mammoth

6
Mastodon

• Tusks used for protection
• Hunted by humans
• EXTINCT!

7
Smilodon

• 4 - 5 feet in length
• 3 feet in height
• Weigh about 440 LBS
• Ferocious hunters
• Carnivores
• EXTINCT!

8
Smilodon

• The hunter at work
• Sharp molars
• Shred their prey

9
Elasmotherium

• 16 25 long
• 6.5 long horn
• Weighs 3.5 4.5 tons
• Herbivores
• Related to Rhino