Actinobacteridae Stackebrandt et al. 1997 emend. Zhi et al. 2009 Actinomycetales Buchanan 1917 (Approved Lists 1980) emend. Salam et al. 2020 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Actinobacteria (sic) Goodfellow 2021 non Actinobacteria Stackebrandt et al. 1997 Actinomycetota corrig. Goodfellow 2021 Actinobacteriota corrig. Goodfellow 2021 Actinomycetes Krasil'nikov 1949 (Approved Lists 1980) Actinobacteridae Stackebrandt et al. 1997 emend. Zhi et al. 2009 Actinomycetes Krasil'nikov 1949 (Approved Lists 1980) Solirubrobacterales Reddy and Garcia-Pichel 2009 emend. Foesel et al. 2016 Gaiellales Albuquerque et al. 2012 emend. Foesel et al. 2016 Geodermatophilales Sen et al. 2014 Nakamurellales Sen et al. 2014 Frankiales Sen et al. 2014 Micromonosporales (Stackebrandt et al. 1997) Genilloud 2015 Actinopolysporales (Zhi et al. 2009) Goodfellow and Trujillo 2015 Catenulisporales (Cavaletti et al. 2006) Donadio et al. 2015 Kineosporiales (Zhi et al. 2009) Kämpfer 2015 Streptosporangiales Goodfellow 2015 emend. Nouioui et al. 2018 Pseudonocardiales Labeda and Goodfellow 2015 Corynebacteriales Goodfellow and Jones 2015 emend. Nouioui et al. 2018 Propionibacteriales (Rainey et al. 1997) Patrick and McDowell 2015 emend. Nouioui et al. 2018 Glycomycetales Labeda 2015 Jiangellales Tang et al. 2015 Acidimicrobidae Stackebrandt et al. 1997 emend. Zhi et al. 2009 Rubrobacteridae Rainey et al. 1997 emend. Zhi et al. 2009 Coriobacteridae Stackebrandt et al. 1997 emend. Zhi et al. 2009 Sphaerobacteridae Stackebrandt et al. 1997 Incertae sedis 175 None 2015 Acidothermales Sen et al. 2014 Streptomycetales Kämpfer 2012 Actinomarinidae Ghai et al. 2013 Nanopelagicales Neuenschwander et al. 2018 Bifidobacteriales Stackebrandt et al. 1997 emend. Zhi et al. 2009 Actinomycetales Buchanan 1917 (Approved Lists 1980) emend. Salam et al. 2020 Micrococcales Prévot 1940 (Approved Lists 1980) emend. Salam et al. 2020 Mycobacteriales Janke 1924 (Approved Lists 1980) emend. Gupta 2019 Stackebrandt E. Rainey F.A. Ward-Rainey N.L. Proposal for a new hierarchic classification system, Actinobacteria classis nov. 1997 47 2 479 491 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-47-2-479