Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Eurotiomycetes O.E. Erikss. & Winka (1997)
       Subclass Eurotiomycetidae Tehler ex Geiser & Lutzoni (2007), nom. inval.
         Order Onygenales Cif. ex Benny & Kimbr. (1980)
           Family Spiromastigaceae Hirooka, Tanney & Seifert (2016)
             1 Genus Pseudospiromastix Guarro, Stchigel & Cano (2014)
             2 Genus Sigleria Hirooka, Tanney & Seifert (2016)
             3 Genus Spiromastigoides Doweld (2013)
             4 Genus Spiromastix Kuehn & G.F. Orr (1962), nom. illeg. see Genus Spiromastigoides Doweld (2013)