Class Dinophyceae Pascher (1914)
   Order Prorocentrales Lemmerm. (1910)
     Family Prorocentraceae F. Stein (1883)
       Genus Plagiodinium M.A. Faust & Balech (1993)
         1488 Plagiodinium belizeanum M.A. Faust & E. Balech