Haloanaerobiales (sic) Rainey et al. 1995 Halanaerobiales corrig. Rainey et al. 1995 Halanaerobium corrig. Zeikus et al. 1984 emend. Rainey et al. 1995 Haloanaerobium (sic) Zeikus et al. 1984 emend. Rainey et al. 1995 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 Haloanaerobiales (sic) Rainey et al. 1995 Halanaerobiales corrig. Rainey et al. 1995 Clostridia Rainey 2010 Natranaerobiales Mesbah et al. 2007 Thermoanaerobacterales (Garrity and Holt 2001) Wiegel 2010 emend. Lv et al. 2020 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 Halanaerobiaceae corrig. Oren et al. 1984 Haloanaerobiaceae (sic) Oren et al. 1984 Halobacteroidaceae Rainey et al. 1995 Incertae sedis 163 None 2015 Oren A. Change of the names Haloanaerobiales, Haloanaerobiaceae and Haloanaerobium to Halanaerobiales, Halanaerobiaceae and Halanaerobium, respectively, and further nomenclatural changes within the order Halanaerobiales. 2000 50 6 2229 2230 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/00207713-50-6-2229 11156000 Rainey F.A. Zhilina T.N. Boulygina E.S. Stackebrandt E. Tourova T.P. Zavarzin G.A. The taxonomic status of the fermentative halophilic anaerobic bacteria: description of Haloanaerobiales ord. nov., Halobacteroidaceae fam. nov., Orenia gen. nov. and further taxonomic rearrangements at the genus and species level. 1995 1 185 199 Anaerobe 1075-9964 1095-8274 10.1006/anae.1995.1018 16887527 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 No reference is available 2015