Class Dinophyceae Pascher (1914)
   Order Peridiniales Haeckel (1894)
     Family Protoperidiniaceae Balech (1988), nom. cons.
       Genus Gotoius T.H. Abé ex Matsuoka (1988)
         Gotoius ostenfeldii (Steemann Nielsen) J.D. Dodge & S. Toriumi