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 Arthoniomycetidae see Class Arthoniomycetes O.E. Erikss. & Winka (1997)
             Order Arthoniales Henssen ex D.Hawksw. & O.E. Erikss. (1986)
               01 Family Arthoniaceae Rchb. (1841)
               02 Family Chrysothricaceae see Family Chrysotrichaceae Zahlbr. (1905), nom. cons.
               03 Family Roccellaceae Chevall. (1826)
               04 Genus Arthophacopsis Hafellner (1998), incertae sedis
               05 Genus Arthothelium A.Massal. (1852), incertae sedis
               06 Genus Catarraphia A.Massal. (1860), incertae sedis
               07 Genus Hormosphaeria Lév. (1863), nom. dub., incertae sedis
               08 Genus Llimonaea Egea & Torrente (1991), incertae sedis
               09 Genus Nipholepis Syd. (1935), incertae sedis
               10 Genus Sipmania Egea & Torrente (1994), incertae sedis
               11 Genus Stirtoniopsis Groenh. (1938), nom. inval., incertae sedis
               12 Genus Synarthonia Müll.Arg. (1891), incertae sedis
               13 Genus Tania Egea, Torrente & Sipman (1995), incertae sedis
               14 Genus Tarbertia Dennis (1974), incertae sedis
               15 Genus Trichophyma Rehm (1904), incertae sedis
               16 Genus Tylophorella Vain. (1890), incertae sedis
               17 Genus Wegea Aptroot & Tibell (1997), incertae sedis