Published online by Cambridge University Press: 01 May 2009
In view of the vigour with which the investigation of the English Chalk is at present being carried out by amateurs, resulting in the accumulation of large numbers of fossil specimens which give rise to difficulties of nomenclature, the publication of a key to aid collectors in determining the specific position of members of one of the largest Cretaceous genera of the phylum Polyzoa does not seem inappropriate.
1 A topomorph is a term, applicable to Polyzoa and colonial Madreporaria, denoting an individual or group of individuals differing in form from those surrounding it. See Geol. Mag., 1906, pp. 66–68.