Firmibacteria Murray 1988 Firmibacteria Murray 1988 Bacillales Prévot 1953 (Approved Lists 1980) Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Firmicutes (sic) Gibbons and Murray 2021 Bacillota corrig. Gibbons and Murray 2021 Firmacutes (sic) Gibbons and Murray 2021 Firmibacteria Murray 1988 Firmicutes (sic) Gibbons and Murray 2021 Bacillota corrig. Gibbons and Murray 2021 Firmacutes (sic) Gibbons and Murray 2021 Clostridia Rainey 2010 Thermolithobacteria Sokolova et al. 2007 Negativicutes Marchandin et al. 2010 Erysipelotrichi Ludwig et al. 2009 Erysipelotrichia (Ludwig et al. 2009) Ludwig et al. 2010 Incertae sedis 142 Liu et al. 2014 Tissierellia Alauzet et al. 2014 Limnochordia Watanabe et al. 2015 Mollicutes Edward and Freundt 1967 (Approved Lists 1980) emend. Gupta et al. 2019 Bacilli Ludwig et al. 2010 Incertae sedis 197 Chivian et al. 2008 Incertae sedis 433 Ngugi et al. 2017 Incertae sedis 497 Pfleiderer et al. 2013 Culicoidibacteria Neupane et al. 2020 Desulfuribacillia Sorokin et al. 2021 Incertae sedis 683 Jungbluth et al. 2017 Bacillales Prévot 1953 (Approved Lists 1980) Murray R.G.E. Holt J.G. The Higher Taxa, or, a Place for Everything...? 1984 1 1 31 34 Bergey's Manual of Systematic Bacteriology The Williams and Wilkins Co. Baltimore Bacilli Ludwig et al. 2010 Murray R.G.E. Holt J.G. The Higher Taxa, or, a Place for Everything...? 1984 1 1 31 34 Bergey's Manual of Systematic Bacteriology The Williams and Wilkins Co. Baltimore List Editor Validation of the publication of new names and new combinations previously effectively published outside the IJSB. List No. 25. 1988 38 2 220 222 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-38-2-220 No reference is available 2015 Although Firmibacteria is an earlier homotypic synonym of Bacilli, this name is not currently in use.