Thermoanaerobacterales (Garrity and Holt 2001) Wiegel 2010 emend. Lv et al. 2020 Thermoanaerobacterales (Garrity and Holt 2001) Wiegel 2010 emend. Lv et al. 2020 Thermoanaerobacter Wiegel and Ljungdahl 1982 emend. Lee et al. 2007 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 Clostridia Rainey 2010 Thermoanaerobacterales (Garrity and Holt 2001) Wiegel 2010 emend. Lv et al. 2020 Clostridia Rainey 2010 Haloanaerobiales (sic) Rainey et al. 1995 Halanaerobiales corrig. Rainey et al. 1995 Natranaerobiales Mesbah et al. 2007 Eubacteriales Buchanan 1917 (Approved Lists 1980) emend. Tindall 2019 Clostridiales Prévot 1953 (Approved Lists 1980) Thermoanaerobacteriales Garrity and Holt 2001 Syntrophomonadales Sorokin et al. 2016 Thermosediminibacterales Zhang et al. 2019 Thermovenabulales Parks et al. 2018 Moorellales Lv et al. 2020 Koleobacterales Sakamoto et al. 2021 Monoglobacales None 2015 Incertae sedis 650 Sorokin et al. 2021 Borkfalkiales corrig. Hildebrand et al. 2019 Comantemales (sic) Hildebrand et al. 2019 Thermoanaerobacteraceae (Garrity and Holt 2001) Wiegel 2010 Thermodesulfobiaceae Mori et al. 2004 emend. Pavan et al. 2018 Thermovenabulaceae Parks et al. 2018 Incertae sedis 56 None 2015 Incertae sedis 13 Takii et al. 2007 Wiegel J. De Vos P. Garrity G. Jones D. Krieg N.R. Ludwig W. Rainey F.A. Schleifer K.H. Whitman W.B. Family I. Thermoanaerobacteraceae fam. nov. 2009 3 2 1225 Bergey's Manual of Systematic Bacteriology Springer-Verlag New York Wiegel J. De Vos P. Garrity G. Jones D. Krieg N.R. Ludwig W. Rainey F.A. Schleifer K.H. Whitman W.B. Order III. Thermoanaerobacterales ord. nov. 2009 3 2 1224 Bergey's Manual of Systematic Bacteriology Springer-Verlag New York Rainey F.A. De Vos P. Garrity G. Jones D. Krieg N.R. Ludwig W. Rainey F.A. Schleifer K.H. Whitman W.B. Class II. Clostridia class nov. 2009 3 2 736 Bergey's Manual of Systematic Bacteriology Springer-Verlag New York Thermoanaerobacteriales Garrity and Holt 2001 Zhang X. Tu B. Lv X.-M. Lawson P.A. Yang M. Dai L.-R. Zhang H. Tang Y.-Q. Deng Y. Cheng L. Description of Biomaibacter acetigenes gen. nov., sp. nov., and proposal of Thermosediminibacterales ord. nov. containing two novel families of Tepidanaerobacteraceae fam. nov. and Thermosediminibacteraceae fam. nov. 2019 69 12 3891 3902 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.003701 31513009 Lv X.-M. Yang M. Dai L.-R. Tu B. Chang C. Huang Y. Deng Y. Lawson P.A. Zhang H. Cheng L. Tang Y.-Q. Zhaonella formicivorans gen. nov., sp. nov., an anaerobic formate-utilizing bacterium isolated from Shengli oilfield, and proposal of four novel families and Moorellales ord. nov. in the phylum Firmicutes. 2020 70 5 3361 3373 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.004178 32375973 Euzéby J. Validation List No. 132. List of new names and new combinations previously effectively, but not validly, published 2010 60 3 469 472 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.022855-0 Wiegel J. De Vos P. Garrity G. Jones D. Krieg N.R. Ludwig W. Rainey F.A. Schleifer K.H. Whitman W.B. Order III. Thermoanaerobacterales ord. nov. 2009 3 2 1224 Bergey's Manual of Systematic Bacteriology Springer-Verlag New York TODO (parker): Garrity and Holt should not appear in the authority of the replacement name (NVP).