No. neither teeth nor horns have that pattern/texture. As Bone2Stone said: "The crystalized area is where the actual marrow once was. Mrtodd's specimen has all the earmarks of a fossil rib bone." Why don't you re-post your new questions (above) so people can see them and comment. Fresh content deserves a fresh thread. BTW the only one I think might be something is the long one w/ the weird bendy curve. Can't really tell from the quality of the photo. I suppose an outside guess would be petrified wood? But that's a blind guess. Very blind.