BIOTIC References
696Hayward, P.J. & Ryland, J.S., 1999. Cheilostomatous Bryozoa. Part II Hippothooidea - Celleporoidea. Synopses of the British Fauna (New Series), (ed. D.M. Kermack & R.S.K. Barnes), The Linnean Society of London. London: Academic Press.[Synopses of the British Fauna, no. 14. (2nd edition)]
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