| Here is a very rare Pricyclopyge longicephala from the Czech Ordovician. This specimen shows the many small single lenses of the big compound eye. | |||
Location: | Rokycany - D5 , Barrandian area, Czech Republic | ||
| Size trilobite: | about 23 mm long | ||
| Age: | Middle Ordovician, Llandeilo, Dobrotivské Formation (About 464 mill. Years old) | ||