Here is a good Trinucleoides reusii from a "Rokycany Concretion" of the Šárka - Formation. | |||
Location: | Rokycany , Barrandian area, Czech Republic | ||
Size trilobite: | largest, about 13 mm long | ||
Age: | Middle Ordovician, Llandeilo, Šárka Formation (About 464 mill. Years old) |