Here are some pictures of a trilobite cephalon that has been cleaned. It was found in the Silurian Period Osgood Formation of Indiana. The trilobite might be a Spathacalymene nasuta? (Ulrich, 1879). Next pictures shows a before and after cleaning of this fossil. The last picture shows a comparison between the Spathacalymene and Calymene (Brongniart, 1822) trilobites.
That trilobite really must have been a real digger with that front scoop on its cephalon.
Thanks to Kenny for the pictures and good job on cleaning this little fellow up.
