Here is a enrolled specimen of a Ormathops atavus that is centred in a typical Rokycany concretion. | |||
Location: | Rokycany Osek, Barrandian area, Czech Republic | ||
Size trilobite: | about 22 mm wide | ||
Age: | Middle Ordovician, Llandeilo, Šárka Formation (About 464 mill. Years old) |