A Mosasaur’s Last Meal

Look into the jaws of a Mosasaurus and you will gaze into a nightmare. The seagoing lizard's curved teeth stand in a line that point backwards to the throat, an extra set of piercing teeth on the roof of the mouth guaranteeing that any journey into the mosasaur's mouth was a one-way trip. Mosasaurus clearly had the bite of a carnivore. But what did it actually eat? That's a tale that cannot be told be teeth alone, and, fortunately for paleontologists, a lovely little Mosasaurus provides a partial answer to the question.

In 2008, workers at Alberta, Canada's Korite International Ammolite Mine uncovered the bones of a marine reptile. ...

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