Natica cf. hemiclausa (J et G SOWERBY)

Fossil mollusc, Natica cf. hemiclausa (J et G SOWERBY) (gastropod, necklace shell); poor specimen, incomplete shell, hand collected from the Pliocene (Mactra Zone, horizon 11b) deposits, of Tjörnes, Litli Svarthamar, Tjörnes, Iceland collected by P E P Norton, July 1969