P. D.  Taylor, Wilson, M. A., and Bromley, R. G., ?A new ichnogenus for etchings made by cheilostome bryozoans into calcareous substrates?, Palaeontology, vol. 42, 1999.

P. S.  Balson and Taylor, P. D., ?Palaeobiology and systematics of large cyclostome bryozoans from the Pliocene Coralline Crag of Suffolk?, Palaeontology, vol. 25, 1982.