Other forms of bone modification:
Striations and puncture marks produced by pressure against grains of sediment caused by trampling.
Chemical alterations cause dissolution to occur and certain acidic liquid can eat away at bone material.
Dissolution of shell causing
irregular pattern on the
surface of the organism.
Root marks may form on the surfaces of bone, and may be associated to fungus or bacteria causing corrosion.
Root etching on a sheep mandible.