Hi, I found this flint fossil on the beach at Taddiford Gap, Hants and I'm intrigued by it.
On very close inspection it seems to be bone, and has the honey-comb structure of bone, but I can't think what part of an animal skeleton it comes from!
It appears to be a round, slightly convex (or concave) disc with no sign of the bone being broken other than the wearing on the 'top' and where the side is worn to show the honeycomb structure. The concave side has channels, presumably for blood vessels to feed the bone.
I'm stumped! If anyone has any ideas or answers, I'd be grateful.