This is a fine specimen of Dalmanites limulurus from the Silurian of New York. The somewhat inflated trilobite is almost perfectly prone and wonderfully articulated. The compound eyes stick up above the sleek carapace of the trilobite, and the individual lenses are easily seen. The genal spines and the caudal spine are clearly defined. The specimen has nice color and contrast and is well presented on the almost rectangular plate of matrix. This is a very affordable example of this "classic" Silurian trilobite from the Rochester Shale.