| This trilobite of the genus Prionocheilus from Portugal is a rare and detailed specimen that is available at a reasonable price. The species is best compared to Prionocheilus pulcher (Barrande 1846). The trilobite shows a slight verdigris on the surface, which could be due to its typical color play of Bornite (Peacock Ore). The Prionocheilus comes with both positive and negative sides. | |||
Location: | Macao, Portugal | ||
| Size trilobite: | about 48 mm long, | ||
| Age: | Middle Ordovician , Caradoc (Sandbian) , Cabeço do Peão Formation (about. 464. Ma) | ||