Incertae sedis 4 Garrity et al. 2007 Incertae sedis 4 Garrity et al. 2007 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 Incertae sedis 4 Garrity et al. 2007 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 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 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 Pseudocaedibacter Quackenbush 1982 Symbiotes Philip 1956 emend. Brooks 1974 (Approved Lists 1980) Caedobacter (sic) (ex Preer et al. 1974) Preer and Preer 1982 emend. Schrallhammer et al. 2018 Caedibacter corrig. (ex Preer et al. 1974) Preer and Preer 1982 emend. Schrallhammer et al. 2018 Tectibacter corrig. (ex Preer et al. 1974) Preer and Preer 1982 Tectobacter (sic) (ex Preer et al. 1974) Preer and Preer 1982 Odyssella Birtles et al. 2000 Lyticum (ex Preer et al. 1974) Preer and Preer 1982 Garrity G.M. Lilburn T.G. Cole J.R. Harrison S.H. Euzeby J. Tindall B.J. Part 3 – The Bacteria: Phylum Proteobacteria, Class Alphaproteobacteria 2007 52 111 The Taxonomic Outline of Bacteria and Archaea Release 7.7 Michigan State University Board of Trustees Gieszczykiewicz M. Zagadniene systematihki w bakteriologii - Zur Frage der Bakterien-Systematic 1939 1 9 27 Bulletin de l'Académie Polonaise des Sciences Série des Sciences Biologiques Bull Acad Pol Sci Biol 0001-4087 Caedibacteriaceae corrig. Preer et al. 1974 Garrity G.M. Lilburn T.G. Cole J.R. Harrison S.H. Euzeby J. Tindall B.J. Part 3 – The Bacteria: Phylum Proteobacteria, Class Alphaproteobacteria 2007 52 111 The Taxonomic Outline of Bacteria and Archaea Release 7.7 Michigan State University Board of Trustees