Hysteroconcha dione
PR0384699 1125037 VENERIDAE Hysteroconcha dione (C. Linnaeus, 1758) 45 mm. Venezuela. Isla Margarita. Restinga. On the beach at low tide after small typhoon. Collected myself, these are genuine bivalve pieces, on that beach the shells are huge in size, but no developed spines. Very fresh, some collected with still meat inside.