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