[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum "Actinobacteria" Garrity and Holt 2001
       Class "Actinobacteria" Stackebrandt et al. 1997
         Subclass Actinobacteridae Stackebrandt et al. 1997 see Class Actinobacteria Stackebrandt et al. 1997
           Order Actinomycetales Buchanan 1917 (Approved Lists 1980)
             Suborder Corynebacterineae Stackebrandt et al. 1997
               Family Mycobacteriaceae Chester 1897 (Approved Lists 1980)
                 Genus Mycobacterium Lehmann and Neumann 1896 (Approved Lists 1980)
                   [Mycobacterium fortuitum] da Costa Cruz 1938 (Approved Lists 1980)
                     Mycobacterium fortuitum subsp. fortuitumᵀ (da Costa Cruz 1938) Tsukamura et al. 1986