procaryotes
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     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)
         Subclass Sphaerobacteridae Stackebrandt et al. 1997 [monotypic]
           Order Sphaerobacterales Stackebrandt et al. 1997 [monotypic]
             Suborder "Sphaerobacterineae" "Garrity and Holt 2001" nom. nud. [monotypic] see Order Sphaerobacterales Stackebrandt et al. 1997
               Family Sphaerobacteraceae Stackebrandt et al. 1997 [monotypic]
                 Genus Sphaerobacter Demharter et al. 1989