KYANA Fossil Display at Louisville Nature Center

Today's post are pictures of the display case at the Louisville Nature Center that has fossil specimens provided by the KYANA Geological Society (www.kyanageo.org). I think most of the fossils shown in these pictures are crinoids and they were found at Cumberland Lake, Kentucky. Some of the stems look like they could be the size of small trees today. Since the rock is brown I wonder if they are from the Devonian period?