This first two images of some sort of Pleurodictyum coral from the Jeffersonville Limestone found in Louisville, Kentucky. It is from the Devonian Period. From a recent expedition, I picked out of few corals that are more rare finds. I did not try to determine the species.
This next coral is of a Cladopora or Coenites coral from the Louisville Limestone of the Silurian Period.
This last one is some sort of Syringopora coral from the Devonian Period Jeffersonville Limestone.