Mini Dinosaurs Prowled North America

Tuesday, March 17, 2009 - 02:42 in Paleontology & Archaeology

Massive predators like Albertosaurus and Tyrannosaurus Rex may have been at the top of the food chain, but they were not the only meat-eating dinosaurs to roam North America, according to Canadian researchers who have discovered the smallest dinosaur species on the continent to date. Their work is also helping re-draw the picture of North America's ecosystem at the height of the dinosaur age 75 million years ago.

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