| This plate from the Ordovician of Protugal shows servile trilobites of the species Placoparia tournemini. On the front side is one trilobite positive together with two negatives. On the backside is a other specimen. | |||
Location: | Valongo - Portugal | ||
| Size trilobite plate: | about 85 x 89 mm | ||
| Age: | Middle Ordovician , Llandailo (Darriwilian) (about. 464. Ma) | ||