[blam]

"In 2010, a small bone fragment of a finger bone was discovered in Denisova cave in the Altai Mountains of Asia. Later genetic analysis indicated that it belonged to a heretofore unknown ancient human species, named Denisovans"

I've read that the dna from this little piece of bone has had a more thorough dna analysis than any other bone anywhere.

[SunkenCiv]

In the process of studying the hell out of that DNA, the bone fragment has vanished, existing now only as the archive of genetic data.