My search for Ordovician Period microfossils led me to this little jewel. It appears to be the spine of an echinoid. The tube size is abou...

Here is a closeup of a Foerstephyllum  (Bassler, 1941) colonial coral fossil for the Upper Ordovician Period. It was found in Louisville, K...

I am basing this identification off a picture on the KYANA Geological Society website ( http://www.kyanageo.org/Fossils/mississippian/echino...