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Low tide reveals rare dinosaur fossil

A team from the University of Alaska's Museum of the North has succeeded in excavating the fossil of a rare, ancient marine reptile from rock that's usually covered by the tide.

Photos were sent to the museum's earth sciences curator, who quickly determined that it was the back end of a little-known sea-going reptile from the age of the dinosaurs called a thalattosaur, Greek for "sea lizard."

The fossil was found in a formation estimated to be 220 million years old.

Click here for the full report with photo of the fossil.