Gibbula tumida (MONTAGU)

Fossil mollusc, Gibbula tumida (MONTAGU) (gastropod, top shell); one of the better specimens, plus small and broken shells found in borehole from the Quaternary (Pleistocene, Early Pleistocene) deposits, Icenian Crag, of Ludham, Royal Society Borehole, Ludham, Norfolk, England examined by Dr Peter E.P. Norton, 1961