Thursday, July 31, 2008

New research challenges dinosaur tissue survival theory

Doubt has been cast on claims by scientists that material found in the thighbone of a tyrannosaurus rex in 2005 was dinosaur tissue which had somehow survived to the present day.

The world of paleontology was turned on its head three years ago when a team led by paleontologist Mary Schweitzer of North Carolina State University announced they had found remnants of blood vessels from dinosaur fossils unearthed at Hell Creek in Montana.

The discovery was one of the biggest claims in scientific history as paleontologists believed that any such evidence would have disappeared many millions of years ago.

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