Montana mountain range site of dinosaur die-off

Wednesday, November 28, 2012 | 7:47 p.m. CST

BILLINGS, Mont. — After 10 years of painstakingly unearthing scattered dinosaur fossils at a site along the base of the Pryor Mountains, Glenn Storrs believes he has figured out how the bones arrived at their final resting place 145 million to 150 million years ago.

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