Rickettsiales Gieszczykiewicz 1939 (Approved Lists 1980) emend. Dumler et al. 2001 Rickettsiales Gieszczykiewicz 1939 (Approved Lists 1980) emend. Dumler et al. 2001 Rickettsia da Rocha-Lima 1916 emend. Weiss and Moulder 1974 (Approved Lists 1980) 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 Alphaproteobacteria Garrity et al. 2006 Rickettsiales Gieszczykiewicz 1939 (Approved Lists 1980) emend. Dumler et al. 2001 Alphaproteobacteria Garrity et al. 2006 Parvularculales Garrity et al. 2003 Rhizobiales Kuykendall 2006 Kordiimonadales Kwon et al. 2005 emend. Hördt et al. 2020 Rhodospirillales Pfennig and Trüper 1971 (Approved Lists 1980) emend. Hördt et al. 2020 Rhodobacterales Garrity et al. 2006 emend. Hördt et al. 2020 Sphingomonadales Yabuuchi and Kosako 2006 emend. Hördt et al. 2020 Caulobacterales Henrici and Johnson 1935 (Approved Lists 1980) Sneathiellales Kurahashi et al. 2008 Kiloniellales Wiese et al. 2009 Hyphomicrobiales Douglas 1957 (Approved Lists 1980) emend. Hördt et al. 2020 Incertae sedis 23 None 2015 Magnetococcales Bazylinski et al. 2013 Incertae sedis 91 None 2015 Incertae sedis 136 None 2015 Incertae sedis 154 None 2015 Incertae sedis 120 Tirandaz et al. 2015 Iodidimonadales Iino et al. 2016 Emcibacterales Iino et al. 2016 Micropepsales Harbison et al. 2017 Rhodothalassiales Venkata Ramana et al. 2014 Incertae sedis 70 None 2015 Incertae sedis 224 Kragelund et al. 2006 Incertae sedis 221 Kragelund et al. 2006 Incertae sedis 263 Kwan et al. 2012 Incertae sedis 265 Anderson and Haygood 2007 Incertae sedis 275 Bing et al. 2013 Incertae sedis 326 Horn et al. 1999 Pelagibacterales Grote et al. 2012 Minwuiales Sun et al. 2018 Holosporales Szokoli et al. 2020 Hyphomonadales Kevbrin et al. 2021 Maricaulales Kevbrin et al. 2021 Methylospongiales Podell et al. 2020 Incertae sedis 667 Kanamori et al. 2002 Anaplasmataceae Philip 1957 (Approved Lists 1980) emend. Dumler et al. 2001 Holosporaceae Görtz and Schmidt 2006 emend. Szokoli et al. 2016 Rickettsiaceae Pinkerton 1936 (Approved Lists 1980) emend. Dumler et al. 2001 Incertae sedis 43 None 2015 Ehrlichiaceae Moshkovski 1945 (Approved Lists 1980) emend. Hördt et al. 2020 Caedibacteriaceae corrig. Preer et al. 1974 Caedobacteriaceae (sic) Preer et al. 1974 Hepatincolaceae Szokoli et al. 2016 Incertae sedis 4 Garrity et al. 2007 Incertae sedis 240 Baker et al. 2003 Incertae sedis 226 Vannini et al. 2010 Incertae sedis 227 Vannini et al. 2010 Incertae sedis 256 Boscaro et al. 2013 Incertae sedis 303 Matsuura et al. 2012 Midichloriaceae Montagna et al. 2013 Paracaedibacteraceae Hess et al. 2016 Incertae sedis 441 Matsuura et al. 2012 Incertae sedis 517 Schulz et al. 2014 Tenuibacteraceae Kroer et al. 2016 Deianiraeaceae Castelli et al. 2019 Neowolbachieae Li et al. 2019 Castelli M. Sabaneyeva E. Lanzoni O. Lebedeva N. Floriano A.M. Gaiarsa S. Benken K. Modeo L. Bandi C. Potekhin A. Sassera D. Petroni G. 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