Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Eurotiomycetes O.E. Erikss. & Winka (1997)
       Subclass Mycocaliciomycetidae Tibell (2007) [monotypic]
         1 Order Mycocaliciales Tibell & Wedin (2000) [monotypic]