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 Basidiomycota R.T.Moore (1980) - basidiomycetes
         Class Basidiomycetes G.Winter (1880)
           Subclass Agaricomycetidae Locq. ex Parmasto (1986)
             Order Polyporales Gäum. (1926)
               Family Cyphellaceae Lotsy (1907)
                 01 Genus Adustomyces Jülich (1979) see Genus Radulomyces M.P. Christ. (1960)
                 02 Genus Asterocyphella W.B. Cooke (1961)
                 03 Genus Catilla Pat. (1915)
                 04 Genus Cyphella Fr. (1822), nom. sanct.
                 05 Genus Gloeocorticium Hjortstam & Ryvarden (1986)
                 06 Genus Halocyphina Kohlm. & E. Kohlm. (1965)
                 07 Genus Hyphoradulum Pouzar (1987)
                 08 Genus Incrustocalyptella Agerer (1983)
                 09 Genus Limnoperdon G.A. Escobar (1976)
                 10 Genus Phaeoporotheleum (W.B. Cooke) W.B. Cooke (1961)
                 11 Genus Radulodon Ryvarden (1972)
                 12 Genus Radulomyces M.P. Christ. (1960)
                 13 Genus Rhodoarrhenia Singer (1964)
                 14 Genus Sarcodontia Schulzer (1866)
                 15 Genus Seticyphella Agerer (1983)
                 16 Genus Sphaerobasidioscypha Agerer (1983)
                 17 Genus Thujacorticium Ginns (1988)
                 18 Genus Wiesnerina Höhn. (1907) see Genus Actiniceps Berk. & Broome (1876)
                 19 Genus Woldmaria W.B. Cooke (1961)