Lower Carboniferous Crinoid Calyx

Here are various pictures of Lower Carboniferous Period (Mississippian) crinoid calyx from Fort Payne Formation of Lake Cumberland, Kentucky. They appear to be Eretmocrinus crinoids but some of the fragmented pieces I am not sure.

Always a delight to find the calyx, of course finding the stem and arms attached would be a real treat but were not in Crawfordsville anymore, Toto.