This picture is of a Harpes naumanni (Barrande,1852) trilobite fossil. It was found in Lodenitz, Bohemia. The fossil dates to Silurian Per...

This picture is of a Trinucleus godfussi (Barrande) trilobite fossil. It was found in Wesela Bohemia. The fossil dates to Ordovician P...

This trilobite cephalon fossil is an Harpes montagnei Corda. The fossil was found in the Konieprus Limestone of what is now Czech Republ...

This trilobite cephalon fossil is an Harpes venulosus Corda. The fossil was found in the Konieprus Limestone of what is now Czech Repu...

The image shown is of a  Cnemidium pertuscum Reuss   sponge fossil at the Museo di Paleontologia at Sapienza University of Rome Italy. An...