living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Plantae Haeckel (1866) - plants
       Subkingdom Thallobionta
         Division Eumycota see Kingdom Eumycota
           Subdivision Ascomycotina Ainsw. (1966) see Phylum Ascomycota Caval.-Sm. (1998)
             Class Plectomycetes Ainsw. (1966) see Class Ascomycetes G.Winter (1880)
               Order Eurotiales G.W. Martin ex Benny & Kimbr. (1980)
                 Family Ophiostomataceae Nannf. (1932)
                   1 Genus Ceratocystis Ellis & Halst. (1890)
                   2 Genus Ceratocystopsis see Genus Ceratocystiopsis H.P. Upadhyay & W.B. Kendr. (1975)
                   3 Genus Europhium A.K. Parker (1957) see Genus Ophiostoma Syd. & P.Syd. (1919)
                   4 Genus Ophiostoma Syd. & P.Syd. (1919)
                   5 Genus Sphaeronemella see Genus Sphaeronaemella P.Karst. (1884)
                   6 Genus Subbaromyces Hesselt. (1953)