Domain Eucaryota
   Subdomain Amoebota Doweld (2001)
     Kingdom Mucorobiota Doweld (2001)
       Subkingdom Mucorobiotina Doweld (2001)
         Phylum Chytridiomycota Doweld (2001) [monotypic]
           Class Chytridiomycetes Moebius (1929)
             Subclass Spizellomycetidae Caval.-Sm. (1998)