Favosites turbinatus Colonial Coral

This picture was taken of a fossil in the Falls of the Ohio state park (Clarksville, Indiana) display case at the GeoFair 2009 in Cincinnati, Ohio.

This colonial coral is called Favosites turbinatus (Billings) from the Middle Devonian period. It is part of the Falls of the Ohio state park collection. "It consists of hollow honeycomb corallites (chambers) and floats in water."

The fossil was large and maybe 30 cm across.