Pictures of a variety of Ordovician Period cephalopod molds. Most of these fossils were found east of Louisville, Kentucky in the Grant Lake Formation.
This first picture is of an unknown cephalopod found in Carroll County, Kentucky in the Kope Formation.
These last two images are of cephalopods that have aragonite (or brown calcite) shells. They were found in the Kope Formation in Carroll County, Kentucky. The bryozoan coating seems to helped preserve details of the shells over time.