Mytilus edulis LINNÉ ? or Modiolus sp?

Fossil mollusc, Mytilus edulis LINNÉ (bivalve, mussel); anterior fragment of broken juvenile shell, 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