organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Eukaryota Chatton, 1925 - eukaryotes
     Kingdom Fungi R.T.Moore (1980) - fungi
       Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
         Class Ascomycetes G.Winter (1880) see Phylum Ascomycota Caval.-Sm. (1998)
           Subclass Dothideomycetidae P.M.Kirk et al., 2001, nom. inval. see Subclass Dothideomycetidae P.M.Kirk, P.F. Cannon, J.C. David & Stalpers ex C.L. Schoch, Spatafora, Crous & Shoemaker (2007)
             Order Pyrenulales Fink ex D.Hawksw. & O.E. Erikss. (1986)
               1 Family Massariaceae Nitschke (1869)
               2 Family Monoblastiaceae W. Watson (1929)
               3 Family Pyrenulaceae Rabenh. (1870)
               4 Family Requienellaceae Boise (1986)
               5 Family Trypetheliaceae Zenker (1827)
               6 Family Xanthopyreniaceae Zahlbr. (1926)