This is a classic US trilobite. It is a fabulous Dalmanites limulurus from the Silurian of New York. The HUGE trilobite (almost three inches long!) is almost perfectly prone and nicely articulated. The bug is well inflated and exhibits fine detail. The compound eyes protrude well above the sleek carapace of the trilobite. The broad genal spines and the pointed caudal spine are clearly defined. The fossil has excellent color and contrast and is well presented on the semi-rectangular plate of shale. This is a MONSTER example of this aesthetic trilobite from the Rochester Shale.