When sharks swam the Great Plains
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If you’ve ever been to, lived in, or even flown over the central swath of North America, then you’ve seen the remnants of what was a uniquely fascinating environment. Scientists call it the Western Interior Seaway, and at its greatest extent, it ran from the Caribbean Sea to the Canadian Arctic.
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- Video created by PBS Eons
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Lauren McAlpine
TED Attendee
Lesson in progress
Lauren McAlpine
TED Attendee
Lesson in progress