This is a classic US trilobite. It is a fabulous Dalmanites limulurus from the Silurian of New York. The very large trilobite 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 beautiful plate of shale. This is an impressive example of this aesthetic trilobite from the Rochester Shale.