Meat-eating dinosaur feeds migration theory

Dinosaur hunters digging in a New Mexico quarry have unearthed the fossil bones of an early meat-eating beast whose remains tell a remarkable story of evolution that started more than 200 million years ago when the whole world was one supercontinent known as Pangaea.

The bones boost theories that the first dinosaurs originated in what is now South America and some migrated north into the present-day United States as the giant landmass began breaking into pieces.

A team of five paleontologists, including two who began their studies at UC Berkeley, reported the discovery of the small, carnivorous beast in the journal Science today.

More in SFGate