Placoparia (Coplacoparia) tournemeni (Roualt).
Complete 3D outstretched specimen. Slight twist in the thoracic segments. Some nice detail under magnification. From a really famous old French locality.,
Ordovician, Uppermost Llanvirn Series, 'Llandeilian' Stage.
Section next to the bridge over the old railway line at the former station of Mortain, Normandy, France.
Trilobite : 1.8 cm. long.