2.2" Spiny Ceratarges Trilobite - Zireg, Morocco
At 2.2" long this is a fairly large specimen. There is about 2-3% restoration, on the front of the head, part of the left eye stalk and front edge of left genal spine.
There are currently about 5 different species of Certarges described from Morocco each a slight variation on the others. A paper describing some of these species can be found at:
NEW SPECIES OF THE LICHID TRILOBITE CERATARGES FROM THE MIDDLE DEVONIAN IN MOROCCO