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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.

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Presentation on theme: "Ice Ages - When Proterozoic: 600 – 800 million years ago Ordovician and Silurian: 430 – 460 million years ago Pennsylvanian and Permian: 250 – 350 million."— Presentation transcript:

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


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