Planorbis (Anisus) leucostoma (MILLET) ?

Fossil mollusc, Planorbis (Anisus) leucostoma (MILLET) ? (gastropod, ramshorn snail); shell small, worn, damaged, hand collected from the Quaternary (Pleistocene, Early Pleistocene) deposits, Icenian Crag, of Bramerton, Blake's Pit, Bramerton, Norfolk, England collected by Dr B M Funnell, 1961