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Last updated on May 20, 2013 at 1:23 EDT
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    Cretaceous Videos

    Page 1 of about 4 Videos
    What is an Impact Event
    What is an Impact Event?
    Cretaceous Dinosaur Footprint Found At NASA
    Cretaceous Dinosaur Footprint Found At NASA
    Were Dinosaurs Undergoing Long-Term Decline
    Were Dinosaurs Undergoing Long-Term Decline?
    Scientists Asteroid Definitely Killed the Dinosaurs
    Scientists: Asteroid Definitely Killed the...
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