| Here is a cephalon of a Ormathops atavus as study piece. This piece does show a very nice compound eye. | |||
Location: | Rokycany , Barrandian area, Czech Republic | ||
| Size trilobite: | about 26 mm wide | ||
| Age: | Middle Ordovician, Llandeilo, Šárka Formation (About 464 mill. Years old) | ||