Class Dinophyceae Pascher (1914)
Count: [*] 11o;33f;117g;1550s;1ss
   Order Peridiniales Haeckel (1894)
  Count: [*] 15f;59g;728s;1ss
     Family Pyrophacaceae Er. Lindem. (1928) see Family Pyrocystaceae (F. Schütt) Lemmerm. (1899)
    Count: [*] 2g;7s
       106 Genus Fragilidium Balech ex A.R. Loebl. (1965)
      Count: [*] 5s
       107 Genus Pyrophacus F. Stein (1883)
      Count: [*] 2s