Here is rarly offerd bivalve fossil of the species Glyptarca lusitanica from the middle Ordovician of Portugal. | |||
Location: | Macao, Portugal | ||
Size of fossil: | about 37 x 21 mm | ||
Age: | Middle Ordovician, Sandbian (Caradoc ), Ribeira do Casalinho Formation (about. 464. Ma) |