Gibbula cf. tumida (MONTAGU)

Fossil mollusc, Gibbula cf. tumida (MONTAGU) (gastropod, top shell); juvenile shell, with drill hole, found in 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