Class Dinophyceae Pascher (1914)
   Order Pyrocystales Apstein (1909) see Order Gonyaulacales F.J.R. Taylor (1980)
     Family Pyrocystaceae (F. Schütt) Lemmerm. (1899)
       Genus Dissodinium G.A. Klebs (1916)
         1 Dissodinium pseudolunula Elbrächter & Drebes