Class Dinophyceae Pascher (1914)
Count: [*] 11o;33f;117g;1550s;1ss
   Order Peridiniales Haeckel (1894)
  Count: [*] 15f;59g;728s;1ss
     Family Gonyaulacaceae Er. Lindem. (1928)
    Count: [*] 5g;96s
       Genus Alexandrium Halim (1960)
      Count: [*] 28s
         Alexandrium ostenfeldii (Paulsen) Balech & Tangen
        Count: -