The fossils of Lake Cumberland, Kentucky that have a blue color. Three of these pictures have blue crinoid stem pieces and the fourth is pa...

I think these are imprints of rostroconch creatures in Jeffersonville Limestone found in Louisville, Kentucky. The white material might be ...

I am not sure what this horn coral is called. This one has 43 septa and must have been deformed into an elliptical shape. This horn coral...