Class Dinophyceae Pascher (1914)
   Order Dinophysales Er. Lindem. (1928)
     Family Dinophysaceae F. Stein (1883)
       Genus Ornithocercus F. Stein (1883)
         1 Ornithocercus francescae (Murray & Whitting) Balech
         2 Ornithocercus geniculatus Dangeard
         3 Ornithocercus heteroporus Kofoid (1907)
         4 Ornithocercus magnificus Stein (1883)
         5 Ornithocercus quadratus Schütt (1895)
         6 Ornithocercus splendidus Schütt (1895)
         7 Ornithocercus steinii Schütt
         8 Ornithocercus thumii (Schmidt) Kofoid & Skogsberg