Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Leotiomycetes O.E. Erikss. & Winka (1997)
       Order Helotiales Nannf. (1932)
         Family Chaetomellaceae Baral, P.R. Johnst. & Rossman (2015)
           1 Genus Chaetomella Fuckel (1870)
           2 Genus Pilidium Kunze (1823), nom. sanct.
           3 Genus Sphaerographium Sacc. (1884)
           4 Genus Synchaetomella Decock & Seifert (2005)