This is an excellent double specimen of Onnia sp. from the Ordovician of Morocco. Both trilobites are wonderfully articulated and exhibit great detail. The pitted cephalic borders are clearly defined, the bulbous glabellas are easily seen, and the long, slender genal spines are quite evident. The three-dimensional bugs have wonderful natural color and are beautifully showcased on the sculpted plate of matrix. And best of all, this is a natural double - the trilobites have not been composited. This is a very nice double specimen of Onnia from North Africa.