Here is a very rare Pricyclopyge longicephala from the Czech Ordovician. | |||
Location: | Rokycany - D5, Barrandian area, Czech Republic | ||
| Size trilobite: | about 24 mm long | ||
| Age: | Middle Ordovician, Llanvirn, Dobrotivské Dobrotivá Formation (About 470 mill. Years old) | ||