The three bone fragments turned up on a deserted South Pacific island that lay along the course Amelia Earhart was following when she vanished. Nearby were several tantalizing artifacts: some old makeup, some glass bottles and shells that had been cut open.

Now scientists at the University of Oklahoma hope to extract DNA from the tiny bone chips in tests that could prove Earhart died as a castaway after failing in her 1937 quest to become the first woman to fly around the world

It could be months before scientists know for sure — and it could turn out the bones are from a turtle. The fragments were found near a hollowed-out turtle shell that might have been used to collect rain water, but there were no other turtle parts nearby....