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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

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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Page 1: Ice Ages - When Proterozoic: 600 – 800 million years ago Ordovician and Silurian: 430 – 460 million years ago Pennsylvanian and Permian: 250 – 350 million

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

Page 2: Ice Ages - When Proterozoic: 600 – 800 million years ago Ordovician and Silurian: 430 – 460 million years ago Pennsylvanian and Permian: 250 – 350 million

The Ice Age

Page 3: Ice Ages - When Proterozoic: 600 – 800 million years ago Ordovician and Silurian: 430 – 460 million years ago Pennsylvanian and Permian: 250 – 350 million

Ice Age Affects...

Page 4: Ice Ages - When Proterozoic: 600 – 800 million years ago Ordovician and Silurian: 430 – 460 million years ago Pennsylvanian and Permian: 250 – 350 million

Where?

Page 5: Ice Ages - When Proterozoic: 600 – 800 million years ago Ordovician and Silurian: 430 – 460 million years ago Pennsylvanian and Permian: 250 – 350 million

Mastodon

Mammal 6.5 – 10 feet tall Herbivores Related to Elephant

and Mammoth

Page 6: Ice Ages - When Proterozoic: 600 – 800 million years ago Ordovician and Silurian: 430 – 460 million years ago Pennsylvanian and Permian: 250 – 350 million

Mastodon

Tusks used for protection

Hunted by humans

EXTINCT!

Page 7: Ice Ages - When Proterozoic: 600 – 800 million years ago Ordovician and Silurian: 430 – 460 million years ago Pennsylvanian and Permian: 250 – 350 million

Smilodon

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

Page 8: Ice Ages - When Proterozoic: 600 – 800 million years ago Ordovician and Silurian: 430 – 460 million years ago Pennsylvanian and Permian: 250 – 350 million

Smilodon

The hunter at work

Sharp molars

Shred their prey

Page 9: Ice Ages - When Proterozoic: 600 – 800 million years ago Ordovician and Silurian: 430 – 460 million years ago Pennsylvanian and Permian: 250 – 350 million

Elasmotherium

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

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