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 discaria Cavalier-Smith, 2021
                 Clade natates Cavalier-Smith, 2021
                   Clade photaria Cavalier-Smith, 2021
                     Clade eucorta Cavalier-Smith, 2021
                       Superkingdom Corticata Lankester, 1878 - corticates
                         Kingdom Chromista Caval.-Sm. (1981) - chromists
                           Subkingdom Harosa Cavalier-Smith, 2010
                             [crown] Clade Sar Adl et al. 2012 [Simpson & Dunthorn 2020]
                               Infrakingdom Halvaria Cavalier-Smith, 2010
                                 Superphylum Heterokonta Caval.-Sm. (1986)
                                   Phylum Bigyra Cavalier-Smith, 1998
                                     Subphylum Sagenista Cavalier-Smith, 1995 [monotypic]
                                       Class Labyrinthulea Olive ex Cavalier-Smith, 1986
                                         Order Thraustochytrida Sparrow, 1973 - thraustochytrids
                                           1 Genus Pyrrhosorus Juel, 1901, incertae sedis
                                           2 Genus Thanatostrea Franc & Arvy, 1969, incertae sedis
                                           3 Family Thraustochytriidae Sparrow ex Cejp, 1959
                                           4 Family Oblongichytriidae Cavalier-Smith, 2012 [monotypic]
                                           5 Family Althorniidae Cavalier-Smith, 2012 [monotypic]
                                           6 Family Diplophryidae Cavalier-Smith, 2012 [monotypic]