Frankineae Stackebrandt et al. 1997 emend. Lee 2013 Frankia Brunchorst 1886 emend. Becking 1974 (Approved Lists 1980) 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) Actinomycetales Buchanan 1917 (Approved Lists 1980) emend. Salam et al. 2020 Frankineae Stackebrandt et al. 1997 emend. Lee 2013 Actinomycetales Buchanan 1917 (Approved Lists 1980) emend. Salam et al. 2020 Pseudonocardineae Stackebrandt et al. 1997 emend. Labeda et al. 2011 Micromonosporineae Stackebrandt et al. 1997 emend. Zhi et al. 2009 Glycomycineae Rainey et al. 1997 emend. Zhi et al. 2009 Streptomycineae Rainey et al. 1997 emend. Zhi et al. 2009 Propionibacterineae Rainey et al. 1997 emend. Zhi et al. 2009 Kineosporiineae Zhi et al. 2009 Catenulisporineae Cavaletti et al. 2006 emend. Zhi et al. 2009 Actinopolysporineae Zhi et al. 2009 Incertae sedis 60 None 2015 Corynebacterineae Stackebrandt et al. 1997 emend. Zhi et al. 2009 Actinomycineae Stackebrandt et al. 1997 emend. Zhi et al. 2009 Micrococcineae Stackebrandt et al. 1997 emend. Yassin et al. 2011 Streptosporangineae Ward-Rainey et al. 1997 emend. Zhi et al. 2009 Arcanobacteriaceae Salam et al. 2020 Cryptosporangiaceae Zhi et al. 2009 Frankiaceae Becking 1970 (Approved Lists 1980) emend. Zhi et al. 2009 Acidothermaceae Rainey et al. 1997 emend. Zhi et al. 2009 Geodermatophilaceae Normand 2006 emend. Zhi et al. 2009 Microsphaeraceae Rainey et al. 1997 Sporichthyaceae Rainey et al. 1997 emend. Zhi et al. 2009 Incertae sedis 181 None 2015 Nakamurellaceae Tao et al. 2004 emend. Zhi et al. 2009 Motilibacteraceae Lee 2013 Incertae sedis 119 None 2015 Incertae sedis 211 None 2015 Lee S.D. Proposal of Motilibacteraceae fam. nov., with the description of Motilibacter rhizosphaerae sp. nov. 2013 63 10 3818 3822 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.052357-0 23667142 Jezbera J. Sharma A.K. Brandt U. Doolittle W.F. Hahn M.W. ‘Candidatus Planktophila limnetica’, an actinobacterium representing one of the most numerically important taxa in freshwater bacterioplankton 2009 59 11 2864 2869 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.010199-0 19628588 Carlsohn M.R. Groth I. Saluz H.P. Schumann P. Stackebrandt E. Fodinicola feengrottensis gen. nov., sp. nov., an actinomycete isolated from a medieval mine. 2008 58 7 1529 1536 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.65512-0 18599689 Lee S.D. Antricoccus suffuscus gen. nov., sp. nov., isolated from a natural cave 2015 65 12 4410 4416 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.000588 26358117 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 Zhi X.Y. Li W.J. Stackebrandt E. An update of the structure and 16S rRNA gene sequence-based definition of higher ranks of the class Actinobacteria, with the proposal of two new suborders and four new families and emended descriptions of the existing higher taxa. 2009 59 3 589 608 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.65780-0 19244447