I found an unusual specimen today in a creek. It is embedded in limestone next to some quartz nodules. I did not have any tools on me so I could not get the specimen out of the lime stone and was unable to take it home. So I quickly took a picture before leaving, not thinking about scale, but i'd say it is about 4 inches in diameter. To me it (by it I mean the visible parts of the specimen) looks like a crinoid calyx. If anyone can tell me additional information about this specimen from just this blurry picture then please do so!