Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Eurotiomycetes O.E. Erikss. & Winka (1997)
       Subclass Eurotiomycetidae Doweld (2001)
         01 Order Arachnomycetales Gibas, Sigler & Currah (2002)
         02 Order Ascosphaerales Gäum. ex Skou (1982) see Order Onygenales Cif. ex Benny & Kimbr. (1980)
         03 Order Eurotiales G.W. Martin ex Benny & Kimbr. (1980)
         04 Order Onygenales Cif. ex Benny & Kimbr. (1980)
         05 Genus Amaurascopsis Guarro, Gené & De Vroey (1992)
         06 Genus Azureothecium Matsush. (1989)
         07 Genus Calyptrozyma Boekhout & Spaay (1995)
         08 Genus Leiothecium Samson & Mouch. (1975)
         09 ?Genus Pisomyxa Corda (1837)
         10 ?Genus Samarospora Rostr. (1892)
         11 Genus Veronaia Benedek (1961)