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The Arrival of Native Nations (11,700-4,000 years ago)
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Missing Pieces (299 million to 2.6 million years ago)
The Land Emerges (320 million to 299 million years ago)
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Frozen Illinois (2.6 million to 11,700 years ago)
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Illinois State Museum
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The Arrival of Native Nations (11,700-4,000 years ago)
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