Cardium (Acanthocardia) tuberculatum LINNÉ

Fossil mollusc, Cardium (Acanthocardia) tuberculatum LINNÉ (bivalve); fragment of a large shell, hand collected from the Pliocene (Mactra Zone, horizon 10) deposits, of Tungubakkar, second gulch south of coal mine ('V gulch'), Tjörnes, Iceland collected by P E P Norton, July 1969