Rissoa cf. obsoleta S V WOOD

Fossil mollusc, Rissoa cf. obsoleta S V WOOD (gastropod, spire shell); midsize and juvenile shells. 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