Diacalymene ouzregui Destombes.
Probably the commonest Trilobite to ever come out of Morocco. It has been around for over 40 years. Easily mistaken for the very similar looking Calymene (Eohomalonotus) brongniarti. They are found in nodules. The vast majority are poorly preserved,incomplete damaged or distorted. This one is fully outstretched with librigenes attached.
Ordovician Ashfill Series, Ktaoua Formation.
Erfoud Morocco.
Trilobite : 6 cm long.