Deltaproteobacteria Kuever et al. 2006 emend. Hahn et al. 2017 Myxococcales Tchan et al. 1948 (Approved Lists 1980) emend. Waite et al. 2020 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Proteobacteria (sic) Garrity et al. 2021 Pseudomonadota corrig. Garrity et al. 2021 Alphaproteobacteriota (sic) Garrity et al. 2021 Deltaproteobacteria Kuever et al. 2006 emend. Hahn et al. 2017 Proteobacteria (sic) Garrity et al. 2021 Pseudomonadota corrig. Garrity et al. 2021 Alphaproteobacteriota (sic) Garrity et al. 2021 Gammaproteobacteria Garrity et al. 2005 emend. Williams and Kelly 2013 Betaproteobacteria Garrity et al. 2006 emend. Boden et al. 2017 Alphaproteobacteria Garrity et al. 2006 Epsilonproteobacteria Garrity et al. 2006 Zetaproteobacteria (sic) Makita et al. 2017 Mariprofundia corrig. Makita et al. 2017 Acidithiobacillia Williams and Kelly 2013 Oligoflexia Nakai et al. 2014 emend. Waite et al. 2020 Hydrogenophilalia Boden et al. 2017 Deltabacteria Cavalier-Smith 2002 Syntrophobacterales Kuever et al. 2006 emend. Waite et al. 2020 Desulfarculales corrig. Kuever et al. 2006 Desulfarcales (sic) Kuever et al. 2006 Desulfovibrionales Kuever et al. 2006 emend. Waite et al. 2020 Desulfobacterales Kuever et al. 2006 emend. Waite et al. 2020 Desulfurellales Kuever et al. 2006 emend. Waite et al. 2017 Bdellovibrionales Garrity et al. 2006 emend. Waite et al. 2020 Desulfuromonales (sic) Kuever et al. 2006 emend. Waite et al. 2020 Desulfuromonadales corrig. Kuever et al. 2006 emend. Waite et al. 2020 Syntrophorhabdales Waite et al. 2020 Deferrisomatales Waite et al. 2020 Dissulfuribacterales Waite et al. 2020 Desulfatiglandales Waite et al. 2020 Bradymonadales Wang et al. 2015 Incertae sedis 131 None 2015 Incertae sedis 67 Slobodkina et al. 2016 Myxococcales Tchan et al. 1948 (Approved Lists 1980) emend. 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