Cladopora Coral

A Middle Silurian Period fossil called Cladopora (old name Coenites) found in Louisville Kentucky. It is part of the Louisville Limestone.  The specimen is about 10 cm in length.

This next fossil might be Syringopora from the Middle Devonian Period.

Honeycomb Coral

Favosites coral found in Louisville, Kentucky also known as honeycomb coral.  Found with Silurian Period fossils but this could be a Devonian Period fossil.

Horn Coral: Aulacophyllum

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