Willey and Hickson, 1909
From dinoflaj3
Willey, A. and Hickson, S.J., 1909: The Protozoa (continued). Section F.- The Mastigophora. In: Lankester, R. (editor), A Treatise on Zoology. Part 1. Introduction and Protozoa. First Fascicle. London, Adam and Charles Black, p. 154-192. (Reprinted by A. Asher, Amsterdam, 1964.)