Actinomycetia (Stackebrandt et al. 1997) Salam et al. 2020 pro synon. Actinomycetes Krasil'nikov 1949 (Approved Lists 1980) Actinomycetia (Stackebrandt et al. 1997) Salam et al. 2020 pro synon. Actinomycetes Krasil'nikov 1949 (Approved Lists 1980) 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 Actinomycetia (Stackebrandt et al. 1997) Salam et al. 2020 pro synon. Actinomycetes Krasil'nikov 1949 (Approved Lists 1980) Actinobacteria (sic) Goodfellow 2021 non Actinobacteria Stackebrandt et al. 1997 Actinomycetota corrig. Goodfellow 2021 Actinobacteriota corrig. Goodfellow 2021 Actinobacteria Stackebrandt et al. 1997 emend. Nouioui et al. 2018 non Actinobacteria Goodfellow 2021 Rubrobacteria Suzuki 2013 emend. Foesel et al. 2016 Coriobacteriia König 2013 emend. Gupta et al. 2013 Acidimicrobiia Norris 2013 Thermoleophilia Suzuki and Whitman 2013 emend. Foesel et al. 2016 Actinomycetes Krasil'nikov 1949 (Approved Lists 1980) Nitriliruptoria Ludwig et al. 2013 Syntrophaliphaticia corrig. Liu et al. 2020 Syntraliphaticia (sic) Liu et al. 2020 Incertae sedis 722 Merino et al. 2020 Actinomycetales Buchanan 1917 (Approved Lists 1980) emend. Salam et al. 2020 Acidothermales Sen et al. 2014 Bifidobacteriales Stackebrandt et al. 1997 emend. Zhi et al. 2009 Catenulisporales (Cavaletti et al. 2006) Donadio et al. 2015 Corynebacteriales Goodfellow and Jones 2015 emend. Nouioui et al. 2018 Cryptosporangiales Nouioui et al. 2018 Frankiales Sen et al. 2014 Geodermatophilales Sen et al. 2014 Glycomycetales Labeda 2015 Jiangellales Tang et al. 2015 Kineosporiales (Zhi et al. 2009) Kämpfer 2015 Micrococcales Prévot 1940 (Approved Lists 1980) emend. Salam et al. 2020 Micromonosporales (Stackebrandt et al. 1997) Genilloud 2015 Nakamurellales Sen et al. 2014 Propionibacteriales (Rainey et al. 1997) Patrick and McDowell 2015 emend. Nouioui et al. 2018 Pseudonocardiales Labeda and Goodfellow 2015 Sporichthyales Nouioui et al. 2018 Streptosporangiales Goodfellow 2015 emend. Nouioui et al. 2018 Actinocatenisporales Salam et al. 2020 Cellulomonadales Salam et al. 2020 Ruaniales Salam et al. 2020 Phytomonosporales Salam et al. 2020 Motilibacterales Salam et al. 2020 Microbacteriales Salam et al. 2020 Antricoccales Salam et al. 2020 Aquipuribacterales Salam et al. 2020 Dermatophilales Salam et al. 2020 Demequinales Salam et al. 2020 Dermabacterales Salam et al. 2020 Jatrophihabitantales Salam et al. 2020 Beutenbergiales Salam et al. 2020 Bogoriellales Salam et al. 2020 Brevibacteriales Salam et al. 2020 Salam N. Jiao J.-Y. Zhang X.-T. Li W.-J. Update on the classification of higher ranks in the phylum Actinobacteria. 2020 70 2 1331 1355 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.003920 31808738 Actinobacteria Stackebrandt et al. 1997 emend. Nouioui et al. 2018 non Actinobacteria Goodfellow 2021 Actinomycetes Krasil'nikov 1949 (Approved Lists 1980) Salam N. Jiao J.-Y. Zhang X.-T. Li W.-J. Update on the classification of higher ranks in the phylum Actinobacteria. 2020 70 2 1331 1355 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.003920 31808738 No reference is available 2015 Actinomycetia Salam et al. 2020 has the same nomenclatural type as Actinomycetes Krasil'nikov 1949 (Approved Lists 1980). Actinomycetes therefore has priority over Actinomycetia.