Hey,
this is a bone that that my grandfather got with a bunch of other fossils for me and my siblings awhile ago before he passed away, I didn’t get interested in fossils till last year and found the jar with the other fossils most of the stuff in the jar were from Florida, but this one doesn’t look like most Florida fossils so I’m guessing it wasn’t found there. To me, it almost looks like some fossils I’ve seen from England, based on the mineralization and it’s super hard, what are your guesses on what it is?