This series of pictures are of a Devonian period horn coral called Craterophyllum magnificum (Billings). I have been looking for one of...

Here is a large coral piece found in the Louisville Limestone in Jefferson County, Kentucky. It was from the Middle Silurian period. This ...

Silurian coral Arachnophyllum pentagonum ( Goldfuss ) found in Louisville limestone showing a top and side views. Here are two pieces of...