Here s a study piece of a Rokycany Ball with a trilobite partial of the species Rokycany Placoparia barrandei. | |||
Location: | Rokycany Osek, Barrandian area, Czech Republic | ||
Size trilobite: | about 17 mm long | ||
Age: | Middle Ordovician, Llandeilo, Šárka Formation (About 464 mill. Years old) |