1 - The first 3 images show two none rare earth magnets attached to an Equus radius recently found in Stainsby beck in the south west area of Cleveland North East England.
2 - This Radius has one of the strongest magnetic attractions, of the many magnetic bones and wood Ive found in this area, usually the wood or bone will only hold a rare earth magnet, not weak ones like this.
3 - This bone is well mineralised and as with the wood and bone Ive previously reported to have a magnetic attraction. I believe the bone has absorbed some form of Magnetite, either after burial or possibly even while the animal lived.