The last visit KYANA Geological Society made to the Lake Cumberland, members came across blue brachiopods. This creature must be from the Mississippian or Lower Carboniferous time period. The fossils appear to be in the Fort Payne formation.
It also appears some beekite patterns are on parts of the shell imprint
Dr. Don Chesnut has a number of fossil images from this time period in Kentucky's history. See his site here: http://www.donchesnut.com/travels/geology/geologypictures.html#fossils