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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
The Ice Age
Ice Age Affects...
Where?
Mastodon
Mammal 6.5 – 10 feet tall Herbivores Related to Elephant
and Mammoth
Mastodon
Tusks used for protection
Hunted by humans
EXTINCT!
Smilodon
4 - 5 feet in length 3 feet in height Weigh about 440 LBS Ferocious hunters Carnivores EXTINCT!
Smilodon
The hunter at work
Sharp molars
Shred their prey
Elasmotherium
16 – 25 long 6.5 long horn Weighs 3.5 – 4.5 tons Herbivores Related to Rhino
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