Hydrogenophaga Willems et al. 1989 Hydrogenophaga Willems et al. 1989 Hydrogenophaga flava (Niklewski 1910) Willems et al. 1989 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 Betaproteobacteria Garrity et al. 2006 emend. Boden et al. 2017 Burkholderiales Garrity et al. 2006 Comamonadaceae Willems et al. 1991 Hydrogenophaga Willems et al. 1989 Comamonadaceae Willems et al. 1991 Ottowia Spring et al. 2004 emend. Cao et al. 2014 Rhodoferax Hiraishi et al. 1992 emend. Farh et al. 2017 Malikia Spring et al. 2005 Simplicispira Grabovich et al. 2006 Hylemonella Spring et al. 2004 Macromonas Koppe 1924 emend. La Rivière 1974 (Approved Lists 1980) Variovorax Willems et al. 1991 Polaromonas Irgens et al. 1996 Diaphorobacter Khan and Hiraishi 2003 emend. Wei et al. 2015 Acidovorax Willems et al. 1990 emend. Willems et al. 1992 Giesbergeria Grabovich et al. 2006 Caldimonas Takeda et al. 2002 Brachymonas Hiraishi et al. 1995 emend. Halpern et al. 2009 Curvibacter Ding and Yokota 2004 Caenibacterium Manaia et al. 2003 Alicycliphilus Mechichi et al. 2003 Comamonas (ex Davis and Park 1962) De Vos et al. 1985 emend. Zhang et al. 2013 Caenimonas Ryu et al. 2008 emend. Kim et al. 2012 Albidoferax (sic) Ramana and Sasikala 2009 Albidiferax corrig. Ramana and Sasikala 2009 Pseudacidovorax Kämpfer et al. 2008 Pseudorhodoferax Bruland et al. 2009 Verminephrobacter Pinel et al. 2012 Kinneretia Gomila et al. 2010 Limnohabitans Hahn et al. 2010 emend. Chhetri et al. 2021 Roseateles Suyama et al. 1999 emend. Sisinthy and Gundlapally 2020 Ideonella Malmqvist et al. 1994 emend. Noar and Buckley 2009 Mitsuaria Amakata et al. 2005 emend. Sisinthy and Gundlapally 2020 Rubrivivax Willems et al. 1991 Aquabacterium Kalmbach et al. 1999 emend. Hirose et al. 2020 Extensimonas Zhang et al. 2013 Zhizhongheella Dong et al. 2014 Melaminivora Wang et al. 2014 Corticibacter Fang et al. 2015 Tibeticola Khan et al. 2017 Delftia Wen et al. 1999 Ramlibacter Heulin et al. 2003 emend. Lee et al. 2014 Oryzisolibacter Vaz-Moreira et al. 2017 Lampropedia Schroeter 1886 (Approved Lists 1980) emend. Tripathi et al. 2016 Xenophilus Blümel et al. 2001 Calidifontimicrobium Ding et al. 2019 Symbiobacter Liu et al. 2013 Pulveribacter Heo et al. 2019 Aquincola Lechner et al. 2007 Manganitrophus Yu and Leadbetter 2020 Serpentinimonas Bird et al. 2021 Geomonas Khan et al. 2020 non Geomonas Xu et al. 2020 Albitalea Khan et al. 2021 Azohydromonas Xie and Yokota 2005 Vandammella Bernard et al. 2022 Franklinella Bernard et al. 2022 Hydrogenophaga atypica Kämpfer et al. 2005 Hydrogenophaga carboriunda Reinauer et al. 2014 Hydrogenophaga pseudoflava (Auling et al. 1978) Willems et al. 1989 Hydrogenophaga electricum Kimura and Okabe 2013 Hydrogenophaga luteola Du et al. 2015 Hydrogenophaga taeniospiralis (Lalucat et al. 1982) Willems et al. 1989 Hydrogenophaga intermedia Contzen et al. 2001 Hydrogenophaga palleronii (Davis et al. 1970) Willems et al. 1989 Hydrogenophaga caeni Chung et al. 2007 Hydrogenophaga defluvii Kämpfer et al. 2005 Hydrogenophaga flava (Niklewski 1910) Willems et al. 1989 Hydrogenophaga bisanensis Yoon et al. 2008 Hydrogenophaga laconesensis Mantri et al. 2017 Hydrogenophaga crassostreae Baek et al. 2017 Hydrogenophaga soli Yang et al. 2017 Hydrogenophaga aquatica Lin et al. 2017 Hydrogenophaga borbori Choi et al. 2020 Hydrogenophaga aromaticivorans Banerjee et al. 2021 Du J. 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