Hi everyone. Iv'e been thinking about doing this for years and now, here I am! I have some interesting beach finds from "Sharks tooth island" and emerald isle, north carolina beaches. My favorite has obvious tooth marks. Black brown bone shard, about 1 inch long. Looks like something bit into the bone and cracked it open. There are a few molar marks and smaller tooth marks as well. The hole shown is I think a tendon insertion hole? So many predation marks on it. So cool! Any ideas of what the bone is and what had a good meal off of it?