Here is a fragment of the Devonian Period horn coral called Siphonophrentis elongata  (Rafenesque & Clifford, 1820). This image gives a ...

An eroded crinoid stem from Lake Cumberland, Kentucky. The image contains a variety of different views. This crinoid was from the Mississipp...

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