This is a classic US trilobite. It is split pair Triarthrus beckii from the Ordovician layers near Utica, New York. This specimen was found by Steve Hess in 2003. The trilobite is large and well displayed. The individual thoracic segments are easily seen, and even the tiny pygidium is present. Again, this is a split pair specimen - both the part and counterpart (positive and negative) are offered here together. This is a very uncommon split pair Triarthrus from a classic location.