[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
     Class Dinophyceae Pascher (1914)
       Subclass Gymnodiniphycidae Fensome, F.J.R. Taylor, G. Norris, Sarjeant, Wharton & G.L. Williams (1993)
         Order Gymnodiniales Apstein (1909)
           Suborder Gymnodiniineae Fensome, F.J.R. Taylor, G. Norris, Sarjeant, Wharton & G.L. Williams (1993) see Order Gymnodiniales Apstein (1909)
             Family Polykrikaceae Kof. & Swezy (1921) see Family Gymnodiniaceae Lank. (1885)
               Genus Polykrikos Buetschli (1873)
                 Polykrikos kofoidi Chatton see Polykrikos kofoidii Chatton