Kingdom Fungi R.T.Moore (1980) - fungi
   Phylum Chytridiomycota Doweld (2001)
     Class Chytridiomycetes Moebius (1929)
       Family Tetrachytriaceae Doweld (2013), incertae sedis [monotypic]
         1 Genus Tetrachytrium Sorokīn (1874) [monotypic]