Here is a picture of worm burrows. It was found in Mississippian Period rock in Floyd County, Indiana, USA. Thanks to Kenny for the pict...

Picture of what appears to be a  Platyceras dumosum pileum gastropod fossil. It was found in the Devonian limestone of Jefferson County, ...

This fossil appears to be an Ambonychia clam fossil with both valves. It is has quite a bit of matrix covering detailed parts. The clam ...