This is an interesting trilobite double with a specimen of Prionocheilus mendax and one Eccoptochile almadenensis. The Eccoptochile is preserved as an external cast. | |||
Location: | Macao, Portugal | ||
Size trilobites: | about 33 & 15 mm | ||
Age: | Upper Ordovician , Caradoc (Sandbian) (about. 464. Ma) |