"The Medina are made out not to be thicker than (about) 13 feet. the three beds together making about 2 feet. Then come green shales with some sandstones to the cinton, there is no pillar structure here. billcans found a small piece of what appears like Athrophyceus hueranic. At cumandas the Medina is about five foot thinner than at Hamilton. It seems that the higher beds are dipping out.