If the bone fragment is hers, it will solve a 73-year-old mystery, reports MSNBC.
Earhart vanished in 1937, when attempting to fly around the world.
The International Group for Historic Aircraft Recovery (TIGHAR) has made at least 10 expeditions to the uninhabited tropical island, in bid to solve the puzzle.
Nikumaroro Island
One hypothesis is that Earhart and Fred Noonan landed on Nikumaroro, after failing to find Howland Island.
Forensic anthropologist, Karen Ramey Burns, was unable to determine if was from a turtle or a human, MSNBC reports.
The bone will be sent to the Molecular Science Laboratories at Oklahoma University to see if it is human.
Nikumaroro Island
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