| Here is a "Valongo Trilobite" of the species Eodalmanitina macrophtalma with a very long preserved tail spine. The plate shows also a small example trilobite of the rare species Prionocheilus mendax. The trilobite plate itself measures about 155 x 132 mm. | |||
Location: | Valongo - Portugal | ||
| Size trilobite: | about 42 & 7 mm wide | ||
| Age: | Middle Ordovician , Llandailo (Darriwilian) (about. 464. Ma) | ||