organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Eukaryota Chatton, 1925 - eukaryotes
     Kingdom Chromista Caval.-Sm. (1981) - chromists
       Phylum Labyrinthulomycota F.C. Page (1980)
         Class Labyrinthulomycetes Dick (2001) see Class Labyrinthulea L.S. Olive ex Caval.-Sm. (1986), orth. inval.
           Order Thraustochytriales Sparrow (1973) see Order Thraustochytrida Sparrow, 1973
             Family Thraustochytriaceae 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