[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 Peridiniphycidae Fensome, F.J.R. Taylor, G. Norris, Sarjeant, Wharton & G.L. Williams (1993)
         Family Oxytoxaceae Er. Lindem. (1928)
           Genus Oxytoxum F. Stein (1883)
             01 Oxytoxum adriaticum Schiller (1937)
             02 Oxytoxum brunelli Rampi (1939) see Oxytoxum brunellii Rampi (1939)
             03 Oxytoxum compressum Kofoid see Corythodinium compressum (Kofoid) F.J.R. Taylor
             04 Oxytoxum constrictum (Stein, 1883) Bütschli see Corythodinium constrictum (Stein) F.J.R. Taylor
             05 Oxytoxum diploconus Stein, 1883 see Corythodinium diploconus (Stein) F.J.R. Taylor
             06 Oxytoxum elegans Pavillard, 1916 see Corythodinium elegans (Pavillard) F.J.R. Taylor
             07 Oxytoxum longiceps Schiller (1937)
             08 Oxytoxum milneri Murray & Whitting (1899)
             09 Oxytoxum reticulatum (Stein, 1883) Schütt see Corythodinium reticulatum (Stein) F.J.R. Taylor (1976)
             10 Oxytoxum scolopax Stein (1883)