organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Eukaryota Chatton, 1925 - eukaryotes
     Kingdom Fungi R.T.Moore (1980) - fungi
       Phylum Chytridiomycota Arx (1967), nom. inval. see Phylum Chytridiomycota Doweld (2001)
         Class Chytridiomycetes Moebius (1929)
           Order Spizellomycetales D.J.S. Barr (1980)
             1 Family Caulochytriaceae Subram. (1974)
             2 Family Olpidiaceae J.Schröt. (1886)
             3 Family Spizellomycetaceae D.J.S. Barr (1980)