| Here is a nice carpoid of the species Mitrocystites mitra of the "Rokycany Concretions" of the Šárka Formation. | |||
| Location: | Rokycany , Barrandian area, Czech Republic | ||
| Size Matrix: | about 37 x 35 mm | ||
| Age: | Middle Ordovician, Llandeilo, Šárka Formation (About 464 mill. Years old) | ||