Trimerus Trilobite

At the KYANA held on this day, the president Mary Ann brought in a trilobite from the Sellersburg Quarry in Indiana. It looks to me to be an Trimerus delphinocephalus and I am guessing it is from the Silurian period. She was a little fuzzy on the details but thinks she found it in the parking lot and may have kicked it which broke off the section seen on the back right side in this first picture. A very nice find for this area!