Where can you get a curved bone in runescape?

The curved bone is obtained by killing certain types of monsters. You are able to bury it for 15 prayer experience, or you can sell it to Barlak in Dorgesh-Kaan, who will give you 2000gp and 3000 construction experience points. (Also know as a curved construction bone.) The long bone can also be sold to Barlak for 1000gp and 1500 experience points for construction. Like the curved bone, it is obtained by killing certain kinds of monsters. If you want to bury it, then it will give you 15 experience points, just like the curved bone, which is not recommended.