Lewis, S.G., Parfitt, S.A., Preece, R.C., Sinclair, J., Coope, G.R., Field, M.H., Maher, B.A., Scaife, R.G. and Whittaker J.E. 2004. Age and palaeoenvironmental setting of the Pleistocene vertebrate fauna at Norton Subcourse, Norfolk. In: D.C. Schreve (ed.) The Quaternary Mammals of Southern and Eastern England. Field Guide. Quaternary Research Association, London, 5-17.