Incertae sedis 502 Seah et al. 2017 Incertae sedis 502 Seah et al. 2017 Kentrum corrig. Seah et al. 2017 Kentron (sic) Seah et al. 2017 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 Gammaproteobacteria Garrity et al. 2005 emend. Williams and Kelly 2013 Legionellales Garrity et al. 2005 emend. Saini and Gupta 2021 Incertae sedis 502 Seah et al. 2017 Legionellales Garrity et al. 2005 emend. Saini and Gupta 2021 Legionellaceae Brenner et al. 1979 (Approved Lists 1980) emend. Saini and Gupta 2021 Coxiellaceae Garrity et al. 2005 Incertae sedis 230 Mehari et al. 2016 Incertae sedis 686 Tianero et al. 2019 Kentrum corrig. Seah et al. 2017 Kentron (sic) Seah et al. 2017 Seah B.K.B. Schwaha T. Volland J.-M. Huettel B. Dubilier N. Gruber-Vodicka H.R. Specificity in diversity: single origin of a widespread ciliate-bacteria symbiosis. 2017 284 1858 Proceedings of the Royal Society Series B Proc R Soc Lond B Biol Sci 0962-8452 1471-2954 10.1098/rspb.2017.0764 28701560 Seah B.K.B. Schwaha T. Volland J.-M. Huettel B. Dubilier N. Gruber-Vodicka H.R. Specificity in diversity: single origin of a widespread ciliate-bacteria symbiosis. 2017 284 1858 Proceedings of the Royal Society Series B Proc R Soc Lond B Biol Sci 0962-8452 1471-2954 10.1098/rspb.2017.0764 28701560