@rleder Ronny,
The photo attachment function is working OK now so here is one of my “whitened” photos that I took using ammonium chloride. The photo shows two species of edrioasteroids attached to a Rafinesquina ponderosa brachiopod shell. The edrio on the left is a Carneyella pilea while the one on the right is an Isorophus cincinnatiensis.
Jack