Here is a Devonian horn coral called the Heliophyllum that has a bryozoan attached. Notice the bryozoan holdfast to the right of the horn ...

This horn coral may have been eaten on by gastropods looking at the borings on its outer walls. It is the same fossil shown yesterday found...

This coral is from the Devonian period and probably from Jeffersonville Limestone. It is a Heliophyllum venatum horn coral found in Louisvi...