[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Protista (Haeckel, 1866) - protists
     Division Chrysophyta see Phylum Chrysophyta Pascher (1914)
       1 Class Haptophyceae Christensen ex Silva (1980) see Class Prymnesiophyceae D.J. Hibberd (1976)
       2 Class Xanthophyceae P. Allorge ex Fritsch (1935) - yellow-green algae
       3 Class Chrysophyceae Fritsch (1927)
       4 Class Bacillariophyceae Haeckel (1878) - pennates