Ryland, J.S. (1967). Polyzoa. Oceanogr. Mar. Biol. Ann. Rev. 5: 343-369
In: Oceanography and Marine Biology: An Annual Review. Aberdeen University Press/Allen & Unwin: London. ISSN 0078-3218, more
Recent comprehensive accounts of the Polyzoa have been given by Hyman (1959) and Brien (1960). These two works supersede the contribution of Cori (1941) and are likely to remain the standard texts for some years to come; they form the starting point of this review. In common with all three of these authors, I do not consider the Entoprocta as comprising part of the Polyzoa. For most purposes it is justifiable to equate the marine Polyzoa with the class Gymnolaemata, comprising the orders Cheilostomata, Ctenostomata, and Cyclostomata. It is proposed to consider primarily contributions on the physiology and ecology of the Gymnolaemata published during the last decade. Fossil studies will be excluded except where specifically relevant to matters affecting living species. Nevertheless, workers on the systematics of Recent Polyzoa will find of the greatest value the works of Brown (1952), Lagaaij (1952), Bassler (1953), Buge (1957), Berthelsen (1962), and Larwood (1962). A more recent paper also of interest is that by Borg (1965) who has described colony growth in a number of Silurian cyclostomes and trepostomes, finding that in certain genera development proceeds exactly as in some Recent cyclostomes; thus Fistulipora resembles the Lichenoporidae, and Spatiopora the Heteroporidae. It is not intended to discuss topics solely of systematic interest in living species, though the following key works demand special mention: Osburn (1950, 1952, 1953), comprehensive for Polyzoa from the Pacific coast of North America; Prenant and Bobin (1956), Ctenostomata from western Europe and the Mediterranean; Harmer (1957), Cheilostomata Ascophora from Indo-Malaysian waters; Gautier (1962), Cheilostomata from the Mediterranean; and Kluge (1962), comprehensive for Arctic Polyzoa. Mention may also be made of an historical account by Pitt (1961) of work on the Polyzoa.