T. S.  Wood and Okamura, B., A New Key to the Freshwater Bryozoans of Britain, Ireland and Continental Europe, with notes on their ecology. Ambleside: Freshwater Biological Association, 2005.

P. J.  Hayward and Ryland, J. S., Cheilostomatous Bryozoa. Part 2. Hippothoidea - Celleporoidea, vol. 14. Shewsbury: Field Studies Council, 1999.

P. J.  Hayward and Ryland, J. S., Cheilostomatous Bryozoa Part 1. Aeteoidea - Cribrilinoidea, vol. 10. Shrewsbury: Field Studies Council, 1998.

P. J.  Hayward and Ryland, J. S., Cyclostome Bryozoans, vol. 34. London: E.J. Brill for the Linnaean Society , 1985.

P. J.  Hayward, Ctenostome Bryozoans, vol. 33. London: E.J Brill for the Linnaean Society, 1985.