Here is the stratigraphic column of the Westphalia outcrop that me & Dr. Parcell measured in Missouri. It contains the Roubidoux, Gasconade, and Jefferson City/Cotter Dolomite formation of the Arbuckle Group in the Early Ordovician Period.
It contains mostly fine to coarse crystalline cherty dolomite with some sandstone beds. There are some stromatolites and thrombolites(???) in a few of these beds.
I have not made the legend as yet, but I will be put it up later. There is 50+m of thickness so it looks a little blurry.