This is very collectible Proetid trilobite. It is a large type of Cornuproetus from Morocco. This specimen is HUGE for a Cornuproetus - almost 2 inches long! But it is not only big, it is fabulous! The detail is excellent, and the thick shell exoskeleton is beautifully preserved. The bug is extremely well-articulated and outstretched, and the genal spines are long and symmetrical. We cannot stress enough how much bigger and fatter this specimen is than all the others we've seen. This is one trilobite that will never have to be upgraded.