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 |   | Kingdom | Bacteria Cavalier-Smith, 2002
 – bactéries, bacteria, bacterias, bactérias | 
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|   |    Subkingdom | Negibacteria Cavalier-Smith, 2002
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|   |       Phylum | Proteobacteria Garrity et al., 2005
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|   |          Class | Alphaproteobacteria Garrity et al., 2006
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|   |             Order | Rhizobiales Kuykendall, 2006
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|   |                Family | Hyphomicrobiaceae Babudieri, 1950 | 
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          Direct Children: | 
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 |   |                   Genus | 
Ancalomicrobium Staley, 1968
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|   |                   Genus | 
Angulomicrobium Vasil'eva et al., 1986
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|   |                   Genus | 
Aquabacter Irgens et al., 1993
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|   |                   Genus | 
Blastochloris Hiraishi, 1997
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|   |                   Genus | 
Cucumibacter Hwang and Cho, 2008
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|   |                   Genus | 
Devosia Nakagawa et al., 1996 emend. Zhang et al., 2012
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|   |                   Genus | 
Dichotomicrobium Hirsch and Hoffmann, 1989
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|   |                   Genus | 
Filomicrobium Schlesner, 1988
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|   |                   Genus | 
Gemmiger Gossling and Moore, 1975
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|   |                   Genus | 
Hyphomicrobium Stutzer and Hartleb, 1899 emend. Urakami et al., 1995
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|   |                   Genus | 
Maritalea Hwang et al., 2009
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|   |                   Genus | 
Methylorhabdus Doronina et al., 1996
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|   |                   Genus | 
Pedomicrobium Aristovskaya, 1961 emend. Gebers and Beese, 1988
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|   |                   Genus | 
Pelagibacterium Xu et al., 2011
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|   |                   Genus | 
Prosthecomicrobium Staley, 1968 emend. Staley, 1984
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|   |                   Genus | 
Rhodomicrobium Duchow and Douglas, 1949
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|   |                   Genus | 
Rhodoplanes Hiraishi and Ueda, 1994
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|   |                   Genus | 
Seliberia Aristovskaya and Parinkina, 1963
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