Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             Superphylum Terrabacteria Battistuzzi et al. 2004
               Phylum "Actinobacteria" Garrity and Holt 2001
                 Class Actinobacteriaᵀ Stackebrandt et al. 1997
                   Order Frankiales Sen et al. 2014
                     Family Frankiaceaeᵀ Becking 1970 (Approved Lists 1980)
                       Genus Frankiaᵀ Brunchorst 1886 (Approved Lists 1980) [monotypic]
                         1 Frankia alniᵀ (Woronin 1866) von Tubeuf 1895 (Approved Lists 1980)