Spathacalymene nasuta TRILOBITE Silurian Massie Shale Napoleon, Indiana Size: 3 cm. This is a loose specimen with a piece of rock from the layer these come from. The rock has a partial in it that has not been cleaned. These trilobites are generally found with the ventral side showing and have to be flipped onto another rock and then prepped. This one can be mounted next to the partial with little effort. Also note that the shovel found at the top of the cepalon is missing. Price: $30 US ID number: fs924