I found a rock on the veach with a mark on it and was just wondering wether it could be an old fossil or just a mark left from a limpet or something like that.really appreciate your time to help me with this so i can pass the info on to my son who found it with me.

Post's pictures

20151001_184104.jpg, 2.49 mb, 3264 x 1836

20151001_184142.jpg, 2.28 mb, 3264 x 1836

I think this could well be a fossil, though I don't know what of. (Some kind of invertebrate, I imagine, and I specialise in dinosaurs so it's a bit out of my zone!)

This is worth taking along to your local museum, and asking them to look at it in person.