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 Labyrinthulales E.A. Bessey ex P.M.Kirk, P.F. Cannon & J.C. David (2001) see Order Labyrinthulida Lankester, 1877
             ?Genus Pyrrhosorus Juel (1901) see Genus Pyrrhosorus Juel, 1901