When the bones have turned to stone there's not much to restore as the stone/minerals essentially just fill the empty shape that the body left behind. I think t

When the bones have turned to stone there's not much to restore as the stone/minerals essentially just fill the empty shape that the body left behind. I think they can do some minor analysis still, like e.g. pigment analysis to identify possible colors. But if its just 'very old bones' you can still get DNA fragments. The chance of getting a whole strand of DNA is however pretty low. So you might be able to identify relations, but you wouldn't be able to clone them.