A magnificent, very large complete, highly-typical biconvex specimen with both valves. It shows the long hinge line, interarea, delthyrium, numerous lateral plications, the strong dorsal fold and ventral sulcus, the strongly-uniplicate anterior commissure and the micro-ornament of concentric growth lamellae. From Derbyshire, UK.
Size: 48 mmx 91 mm 38 mm
Size: 48 mmx 91 mm 38 mm