SIOUX FALLS, S.D. (AP) — Tyrannosaurus rex may have been known as the big guy around the Hell Creek Formation 66 million years ago, but a newly discovered species of raptor would have roamed nearby as one of the region’s most lethal predators.

Dakotaraptor stood 6 feet tall at the hips yet moved like a springy, agile sprinter, reaching 30 to 40 mph and rivaling today’s ostrich. But potential prey caught admiring the 17-foot-long creature’s grace stood little chance, as the strong-muscled winged Dromaeosaur boasted a vicious 9

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