[living organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Prokaryota Margulis 1974 nom. nud.
     Kingdom Bacteria Cavalier-Smith 2002 stat. inval. - bacteria see Domain Bacteria Woese et al. 1990 stat. inval.
       Subkingdom Posibacteria Cavalier-Smith 1987 see Domain Bacteria Woese et al. 1990 stat. inval.
         Phylum Actinobacteria Garrity and Holt 2001 [monotypic] see Phylum Actinobacteria Goodfellow 2012 nom. inval.
           Class Actinobacteria Stackebrandt et al. 1997 nom. illeg. see Class Actinomycetes Krassilnikov 1949 (Approved Lists 1980)
             01 Order Acidimicrobiales Stackebrandt et al. 1997
             02 Order Actinomycetales Buchanan 1917 (Approved Lists 1980)
             03 Order Bifidobacteriales Stackebrandt et al. 1997
             04 Order Coriobacteriales Stackebrandt et al. 1997
             05 Order Euzebyales Kurahashi et al. 2010
             06 Order Gaiellales Albuquerque et al. 2012
             07 Order Nitriliruptorales Sorokin et al. 2009
             08 Order Rubrobacterales Rainey et al. 1997
             09 Order Solirubrobacterales Reddy and Garcia-Pichel 2009
             10 Order Thermoleophilales Reddy and Garcia-Pichel 2009