Devonian Trilobite and Cephalopod

Here is a cephalopod segment piece and trilobite head from the Devonian Period found in Clark County, Indiana.

Cross section of Ordovician Cephalopod

Here is a small cephalopod mold about 2 cm across. A siphuncle can be seen in the center of this mold filled with calcite or quartz. This cephalopod was found in eastern Jefferson County, Kentucky. It is from the Ordovician Period.

Diamond Cut of Colonial Coral

Here is a view of two sides of the colonial coral. This one was found in eastern Jefferson County, Kentucky. It is an Ordovician coral.