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
                   Order Pseudomonadales Orla-Jensen 1921 (Approved Lists 1980)
                     [Family Chlorobacteriaceae]
                     [Family "Methanomonadeceae"]
                     [Family "Nitrobacteriaceae"] see Family Bradyrhizobiaceae Garrity et al. 2001 nom. ined.
                     [Suborder Pseudomonadineae Breed et al. 1957 (Approved Lists 1980)] see Order Pseudomonadales Orla-Jensen 1921 (Approved Lists 1980)
                     [Family Thiobacteriaceae] see Family Thiotrichaceae
                     1 Family Pseudomonadaceaeᵀ Winslow et al. 1917 (Approved Lists 1980)
                     2 Family Moraxellaceae Rossau et al. 1991