Here is a quite large example of a rare Colpocoryphe bohemica in calcite shell preservation. The trilobite sits on a unopened Rokycany concretion. | |||
Location: | Rokycany , Barrandian area, Czech Republic | ||
Size trilobite: | largest, about 31 mm long | ||
Age: | Middle Ordovician, Llandeilo, Šárka Formation (About 464 mill. Years old) |