FIG. 6 in The exploitation of molluscs and other invertebrates in Alexandria (Egypt) from the Hellenistic period to Late Antiquity: food, usage, and trade

FIG. 6. — Perforated marine mollusc shells found in the same archaeological layer: A-G, Lagoon cockles (Cerastoderma glaucum Bruguière, 1789); H, flat oyster (Ostrea edulis Linnaeus, 1758). Scale bar: 10 mm.