Class Dinophyceae Pascher (1914)
   Order Pyrocystales Apstein (1909) see Order Gonyaulacales F.J.R. Taylor (1980)
     Family Pyrocystaceae (F. Schütt) Lemmerm. (1899)
       Genus Pyrocystis J. Murray ex Haeckel (1890)
         1546 Pyrocystis acuta Kofoid (1907)
         1547 Pyrocystis apiculata F.J.R. Taylor (1976)
         1548 Pyrocystis elegans Pavillard (1930)
         1549 Pyrocystis fusiformis (Haeckel) Blackman (1902)
         1550 Pyrocystis hamulus Cleve
         1551 Pyrocystis lunula Schütt, 1895
         1552 Pyrocystis noctiluca Haeckel (1890)
         1553 Pyrocystis robusta Kofoid (1907)