Aulacophyllum horn coral found in the Jeffersonville Limestone of Clark County, Indiana. The coral grew in the Devonian Period.

This coral is called Cladopora (Coenites) aculeata and is found in the Louisville Limestone. This specimen was found in Jefferson County, ...

Pictures of horn coral specimens found in the Jeffersonville Limestone, Clark County, Indiana. This horn coral is called Craterophyllum . ...