Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade "neomura" Cavalier-Smith 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               Clade neokaryotes Cavalier-Smith 1993 - mitochondrial eukaryotes
                 Clade neozoa Cavalier-Smith 1993
                   Superkingdom Corticata Lankester, 1878
                     Kingdom Chromista Caval.-Sm. (1981) - chromists
                       Subkingdom Harosa Cavalier-Smith, 2010
                         Infrakingdom Halvaria Cavalier-Smith, 2010
                           Superphylum Heterokonta Caval.-Sm. (1981)
                             Phylum Ochrophyta Caval.-Sm. (1995)
                               Subphylum Phaeista Caval.-Sm. (1995)
                                 Infraphylum Limnista Caval.-Sm. (2006)
                                   Class Chrysophyceae Pascher (1914)
                                     1 ?Order Thallochrysidales
                                     2.1 Order Chromulinales Pascher, 1910b
                                     2.2.1 Order Paraphysomonadales Caval.-Sm. (1996)
                                     2.2.2.1 Order Synurales R.A. Andersen (1987)
                                     2.2.2.2.1 Order Chrysosphaerales
                                     2.2.2.2.2 Order Hibberdiales R.A. Andersen, 1989a
                                     2.2.2.2.3 Order Ochromonadales Pascher, 1910b
                                     2.3 Order Hydrurales Pascher (1931) [monotypic]
                                     3.1 Order Chloramoebales [monotypic]
                                     3.2 Order Heterogloeales