Longitude (deg): -5.0. Latitude (deg): 50.4. Longitude (deg/min): 5° 0' W. Latitude (deg/min): 50° 30' N. Vice county name: West Cornwall. Vice county no.: 1. Country: England. Stage: Dead shell. Identified by: Malcolm Storey. Comment: Many dead half-shells and fragments washed up on beach. Shows: anterior ear of right (dark) valve. Detail to note: byssal notch. Category: standard photograph or close-up. Image scaling: enlarged. Real world width(mm): 0. Photographic equipment used: Canon EOS400D digital SLR with Tamron SP AF Di 90mm Macro 1:1 lens.