| Here is a large example of a Colpocoryphe bohemica in a typical Rokycany concretion. This piece does show very well the pygidium. | |||
Location: | Rokycany Osek, Barrandian area, Czech Republic | ||
| Size trilobite: | about 40 mm long | ||
| Age: | Middle Ordovician, Llandeilo, Šárka Formation (About 464 mill. Years old) | ||