Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Dothideomycetes O.E. Erikss. & Winka (1997)
       Family Protoscyphaceae Kutorga & D.Hawksw. (1997), incertae sedis [monotypic]
         1 Genus Protoscypha Syd. (1925)