Tyrannosaur Survivorship -- Tough Times For Teens

A massive dinosaur death bed in Alberta has helped map out the animal's life span and thrown doubt on long-held theories about how one species lived, says new research conducted in part at the University of Alberta.

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<p><a href="http://www.physorg.com/news73665780.html">Tyrannosaur Survivorship -- Tough Times For Teens</a></p> <p>A massive dinosaur death bed in Alberta has helped map out the animal's life span and thrown doubt on long-held theories about how one species lived, says new research conducted in part at the University of Alberta.</p>