I had high hopes for this trilobite fossil that was buried in matrix. It was possible that the cephalon or head was still buried in matrix along with one of the thorax lobes and tail (pygidium). So after using an air scribe and sand blasting it is revealed a tail but no head. A headless trilobite and it is not even Halloween yet! Oh so scary. Next image shows fossil with a ruler to give the viewer some idea its size. Fossil is a Silurian Calymene sp. trilobite found in the Waldron Shale of Indiana.
Here are pictures of some Calymene breviceps trilobite fossils. They were found in the Waldron Shale of Indiana. They existed in the Silurian Period (about 425-419 million years ago). They have not been cleaned yet. Thanks to Kenny for letting me photograph them. The prone ones are about 4-5 cm long and 2-3 cm wide.
Here are some pictures of a Silurian trilobite called the Calymene breviceps? found in the Waldron Shale of Indiana. It is enrolled which might mean it is not a molt. The cleaning process has not been complete as I think I will leave it partially in the matrix. See the before and after images above. The next image shows the fossil about to break away from its matrix base.
