Fig. 5 in New taxa, records, and data for vesicomyid bivalves from Cenozoic strata of the North Pacific region

Fig. 5. The vesicomyid bivalve Pliocardia kawadai (Aoki, 1954), from Middle Miocene seep deposit at Frankfort of the Astoria Formation in western Washington State, USA. NRM Mo 204713, polished sections of the hinge area in the RV (A) and LV (B). Photographs (A1, B1) and their interpretation (A2, B2).