Phacoides borealis (LINNÉ)

Fossil mollusc, Phacoides borealis (LINNÉ) (bivalve); top part of left valve, good preservation, borehole from the Quaternary (Pleistocene, Early Pleistocene) deposits, Icenian Crag, of the Royal Society Borehole, Ludham, Norfolk, England examined by Dr Peter E.P. Norton, 1961