This pyrite gastropod fossil appears to be a  Shansiella . It was found in a coal mine at a depth of 60-250 meters. My identification s...

This pyrite gastropod fossil has well defined ridges that make it easier to identify. It appears to be a  Bellerophon . It was found in a...

The picture displayed is of an  Iereopsis polystoma  sponge fossil at the Museo di Paleontologia at Sapienza University of Rome Italy. Cr...