This is an excellent specimen of Coronocephalus sp. from the Silurian of China. This type of trilobite has a small pustulose glabella and long cephalic spines. The anterior border of the cephalon is quite crenulated, and the large pygidium has short, thin spines along the pygidial border. This trilobite is hardly ever found with the free cheeks present, but this specimen is very well articulated - both free cheeks are intact! The knob-like eyes are also intact, which is extremely unusual. The natural orange-brown coloration of the trilobite contrasts beautifully with the greyish-green matrix. The bug is nicely showcased on the rectangular block of rock. This is a top quality example of Coronocephalina from China.