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 Sordariomycetidae O.E. Erikss. & Winka (1997)
             Order Hypocreales Lindau (1897)
               1 Family Bionectriaceae Samuels & Rossman (1999)
               2 Family Ceratostomataceae G.Winter (1885)
               3 Family Clavicipitaceae Earle ex Rogerson (1970)
               4 Family Hypocreaceae De Not. (1844)
               5 Family Nectriaceae Tul. & C.Tul. (1865)
               6 Family Niessliaceae Kirschst. (1939)