Found on Par Beach in South Cornwall. Is this bone from a marine animal? Any help gratefully received. Nighthawk.
I don't think that this is from a marine animal. It looks like part of the scapula (shoulder blade) of a cow. The smooth dark brown surface is the bit that forms the shoulder joint with the humerus.
Thank you, John. I did wonder whether the bone was part of a scapula but is it big enough for a cow? The glenoid cavity measures 6cm x 4.5cm. There is part of a spine present which would also point to the bone being part of a scapula.
I don't have a cow to measure but here:-
they are said to be elk, moose, cow left to right. If you measure the glenoid end of the cow and compare with the rule I get about 6.5cm. On your specimen the glenoid is smaller than it used to be as the edges are worn.
Thanks for the link. Certainly, the bone has been eroded away by the effect of the sea. I am now fairly convinced that the bone is a scapula but I still have some doubts about it being a cow but accept that you may well be right. Thanks again.