Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             Superphylum "Proteobacteria" Craig et al. 2010
               Phylum "Gammaproteobacteria" Garrity et al., 2005 [monotypic]
                 Class Gammaproteobacteriaᵀ Garrity et al. 2005
                   Genus Alkalimarinus Zhao et al. 2015, incertae sedis
                   Genus Ignatzschineria Tóth et al. 2007, incertae sedis
                   Genus Litorivivens Park et al. 2015, incertae sedis
                   Genus Pseudohongiella Wang et al. 2015, incertae sedis
                   Genus Thiohalobacter Sorokin et al. 2010, incertae sedis
                   Genus Thiolapillus Nunoura et al. 2015, incertae sedis
                   Genus Wohlfahrtiimonas Tóth et al. 2008, incertae sedis [monotypic]
                   01 Genus Alkalimonas Ma et al. 2007, incertae sedis
                   02 Genus Gallaecimonas Rodríguez-Blanco et al. 2010, incertae sedis
                   03 Genus Litoribacillus Zhao et al. 2014, incertae sedis [monotypic]
                   04 Genus Marinicella Romanenko et al. 2010, incertae sedis [monotypic]
                   05 Genus Methylohalomonas Sorokin et al. 2007, incertae sedis [monotypic]
                   06 Genus Methylonatrum Sorokin et al. 2007, incertae sedis [monotypic]
                   07 Genus Plasticicumulans Jiang et al. 2011, incertae sedis
                   08 Genus Sedimenticola Narasingarao and Häggblom 2006, incertae sedis [monotypic]
                   09 Genus Thiohalomonas Sorokin et al. 2007, incertae sedis
                   10 Genus Thiohalorhabdus Sorokin et al. 2008, incertae sedis [monotypic]
                   11 Order Arenicellales Teramoto et al. 2015 [monotypic]
                   12.1 Order Acidiferrobacterales Kojima et al. 2015 [monotypic]
                   12.2 Order Chromatiales Imhoff 2005
                   14.1 Order Lysobacterales Christensen and Cook 1978 (Approved Lists 1980)
                   14.2 Order Nevskiales Naushad et al. 2015
                   15 Order Cardiobacteriales Garrity et al. 2005 [monotypic]
                   16 Order Thiotrichales Garrity et al. 2005
                   17 Order Legionellales Garrity et al. 2005
                   18 Order Methylococcales Bowman 2005
                   19 Order Oceanospirillales Garrity et al. 2005
                   20 Order Pseudomonadales Orla-Jensen 1921 (Approved Lists 1980)
                   21.1 Order Cellvibrionales Spring et al. 2015
                   21.2 Order Alteromonadales Bowman and McMeekin 2005
                   22 Order "Vibrionales" Garrity & Holt, 2001 [monotypic]
                   23 Order Aeromonadales Martin-Carnahan and Joseph 2005
                   24.1 Order "Enterobacteriales" Garrity and Holt 2001 nom. nud. [monotypic]
                   24.2 Order Orbales Kwong and Moran 2013 [monotypic]
                   25 Order Pasteurellales Garrity et al. 2005 [monotypic]