Favosites (Emmonsia) eximia

Here is a Devonian coral called Favosites (Emmonsia) eximia that was found in Clark County, Indiana. I have been experimenting with photographing on a suspended glass plate over a gradient image. It is pretty neat but I have the light setting wrong on the camera in this shot. Tried to compensate using Photoshop though.

Cystihalysites nexus

Found in Louisville, Kentucky in Louisville Limestone. Appears to be the Silurian coral, Cystihalysites nexus.

Unknown Horn Coral

This coral came out of an area of Devonian corals in Jefferson County, Kentucky. I think it might be some sort of Heliophyllum. The outside seems to have eroded away somewhat.