Here is a fossil my friend Mary Ann found I believe in Carroll County, Kentucky at an Ordovician Period fossil road cut. That location would be Kope Formation.
My cousin prepared this piece with air abrasion but we were puzzled to actually what it is. The other day I came across Solius Symbiosus flickr site and saw his photo of a Pychnocrinus crinoid holdfast and decided this must be what this fossil is as well.
If it is not that genus then it at least appears to be some sort of crinoid holdfast.