This is a Tentaculites scalariformis (not sure about species) that lived in the Devonian period. It was found in Jeffersonville Limestone...

Here is a fragment of a Devonian fossil found in Clark County, Indiana. It has a pentagon shape on one side and remnants of a series of tub...

More fossils from Pennsylvania. These trilobite fragments are quite nice. We have places east of Louisville that will yield Cryptolithus pi...