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
                             [halvaria Cavalier-Smith, 2010] see Infrakingdom Halvaria Cavalier-Smith, 2010
                               [Infrakingdom Heterokonta Caval.-Sm. (1986) - heterokonts] see Superphylum Heterokonta Caval.-Sm. (1986)
                                 [Superphylum Sagenista Caval.-Sm. (1995)] see Subphylum Sagenista Cavalier-Smith, 1995
                                   [Phylum Sagenistaᵀ Caval.-Sm. (1995)] see Subphylum Sagenista Cavalier-Smith, 1995
                                     [Class "Labyrinthulea" L.S. Olive ex Caval.-Sm. (1986), orth. inval.] see Class Labyrinthulea Olive ex Cavalier-Smith, 1986
                                       [Order Thraustochytriales Sparrow (1973) [monotypic]] see Order Thraustochytrida Sparrow, 1973
                                         [Family Thraustochytriaceaeᵀ Sparrow, 1943 ex Cejp (1959)] see Family Thraustochytriidae Sparrow ex Cejp, 1959
                                           [Genus Althornia E.B.G.Jones & Alderman (1972)] see Genus Althornia Jones & Alderman, 1972
                                             1 Althornia crouchii E.B.G.Jones & Alderman (1972)