Phylum Pyrrophyta (Dinoflagellates)
Lewis, J. and Dodge, J.D. 2002. Phylum Pyrrophyta (Dinoflagellates). in: John, D., Whitton, B. and Brook, A. (ed.) The freshwater algal flora of the British Isles: an identification guide to freshwater and terrestrial algae Cambridge, UK Cambridge University Press. pp. 186-207