I had the privilege of a day on the water with JCBShark and Shellseeker. When I found this bone, they both thought modern. It sounds fossil like when I hit it against something hard but the flame test showed that at best it is old, in that a slight but definite smell permeated the air when put against a flame. Whether a "young" fossil or modern, I still want to try and ID this. The prominent ball just stands out to me as being different. The lesser trochanter is fractured off.