Along the coast of Normandy, France there is a town called Luc sur Mer (literally Luc on the Sea). Nearby are some cliffs that are Bathonien (Jurassic) in age and contain some interesting Brachiopod fauna. Below is Digonella digona which belong to the order Terebratulida one of three extant Brachiopod orders.
Here are three typical specimens to show you average size.
Thanks to my friend Gery from France for sending these fossils to me.