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 Actinobacteridae Stackebrandt et al. 1997 see Class Actinobacteria Stackebrandt et al. 1997 nom. illeg.
           Order Actinomycetales Buchanan 1917 (Approved Lists 1980)
             Suborder Micrococcineae Stackebrandt et al. 1997 see Order Micrococcales Prévot 1940 (Approved Lists 1980)
               Family Micrococcaceae Pribram 1929 (Approved Lists 1980)
                 01 Genus Micrococcus Cohn 1872 (Approved Lists 1980)
                 02 Genus Arthrobacter Conn and Dimmick 1947 (Approved Lists 1980) nom. cons.
                 03 Genus Bogoriella Groth et al. 1997 nom. illeg. see Genus Allobogoriella Deshmukh and Oren 2025
                 04 Genus Demetria Groth et al. 1997
                 05 Genus Kocuria Stackebrandt et al. 1995
                 06 Genus Leucobacter Takeuchi et al. 1996
                 07 Genus Nesterenkonia Stackebrandt et al. 1995
                 08 Genus Renibacterium Sanders and Fryer 1980
                 09 Genus Rothia Georg and Brown 1967 (Approved Lists 1980)
                 10 Genus Stomatococcus Bergan and Kocur 1982 see Genus Rothia Georg and Brown 1967 (Approved Lists 1980)
                 11 Genus Terracoccus Prauser et al. 1997