Rickettsiaceae Pinkerton 1936 (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 Rickettsiaceae Pinkerton 1936 (Approved Lists 1980) emend. Dumler et al. 2001 Rickettsiales Gieszczykiewicz 1939 (Approved Lists 1980) emend. Dumler et al. 2001 Anaplasmataceae Philip 1957 (Approved Lists 1980) emend. Dumler et al. 2001 Holosporaceae Görtz and Schmidt 2006 emend. Szokoli et al. 2016 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 Orientia Tamura et al. 1995 Rickettsia da Rocha-Lima 1916 emend. Weiss and Moulder 1974 (Approved Lists 1980) Occidentia Mediannikov et al. 2017 Cryptoprodotis (sic) Ferrantini et al. 2009 Cryptoprodota corrig. Ferrantini et al. 2009 Arcanobacter (sic) Martijn et al. 2015 Arcanibacter corrig. Martijn et al. 2015 Trichorickettsia Vannini et al. 2014 Megaira (sic) Schrallhammer et al. 2013 emend. 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