Tiny T. Rex fossil discovery

A pint-sized version of the Tyrannosaurus Rex, with similarly powerful legs, razor-sharp teeth and tiny arms. The predator, nicknamed Raptorex, lived about 60 million years before the T. Rex and was slightly larger than a man. The fossilized remains were discovered in lake beds in northeastern China. Scientists who have studied the fossilized animal, which was 5 to 6 years old when it died, believe it was an ancestor of the fearsome T. Rex. Based on estimates of other similar-sized theropods, or "beast-footed" dinosaurs, Sereno and his colleagues estimate an adult Raptorex was about 9 feet tall and weighed about 143 pounds. The Tyrannosaurus Rex, which topped the prehistoric food chain until dinosaurs went extinct about 65 million years ago, was believed to weigh at least five tons. Scientists hypothesize that Raptorex ran its prey down, using its enlarged skull, powerful jaws and sharp teeth to dispatch animals much larger than itself. Like the T. Rex, the Raptorex also had tiny forelimbs.

http//www.cnn.com/2009/TECH/science/09/17/tiny.t-rex.dinosaur.discovered/index.html