It was a toss up between the Alba and Bonham. That bone could be a handle for something. About the right size and shape. Dwain might have some idea's on it. I couldn't find much in any of my books showing bone artifacts. Pretty rare. Good find though.
The bone is certainly a unique conversation piece. My observation is that the maker was being super careful
with whatever he was going to use it for. Imagine how long, narrow and FRAGILE the flint drill bit must have been to keep it narrow yet 2 inches deep.
Just establishing bone or Antler would help. Antler is denser and stronger than bone for tool hafting...
Your bone artifact appears to be about the right size for a whitetail deer leg bone......which leg bone would be difficult to ascertain from the pictures. The biggest leg bone is the femur so I'll use it as an example. Both the proximal epiphysis (upper end) and the distal epiphysis (lower end) of the femur are made up spongy boney material with a hollow shaft in between. Your piece appears to have the spongy material remaining at one end and the remains of the naturally hollow shaft at the other. The context in which you found the piece would say a lot about whether it was a tool or not. If you found it in an established campsite I'd say it was man handled. If you found it on a sandbar, I'd say no.
Well thats good, you at least know you have the leftover from a good venison dinner,
The only question now is how you have all this time for typing when you should be shoveling snow and pasting stars on the ceiling of the baby's room