Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Sordariomycetes O.E. Erikss. & Winka (1997)
       Order Xenospadicoidales Hern.-Restr., J. Mena & Gené (2017), incertae sedis [monotypic]
         1 Family Xenospadicoidaceae Hern.-Restr., J. Mena & Gené (2017)