Class Dinophyceae Pascher (1914)
   Order Dinophysiales Kof. (1926) see Order Dinophysales Er. Lindem. (1928)
     Family Dinophysaceae F. Stein (1883)
       Genus Heteroschisma Kof. & Skogsb. (1928), nom. rej. see Genus Latifascia Loebl. & A.R. Loebl. (1966)
         152 Heteroschisma globulus Schiller (1933)
         153 Heteroschisma pirum (Gaarder) Balech (1967)
         154 Heteroschisma inaequale Kofoid & Skogsberg (1928)
         155 Heteroschisma subantarcticum Balech (1971)