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 Aeromonadales Martin-Carnahan and Joseph 2005
                     Family Aeromonadaceaeᵀ Colwell et al. 1986
                       Genus Aeromonasᵀ Stanier 1943 (Approved Lists 1980)
                         Aeromonas hydrophila (Chester 1901) Stanier 1943 (Approved Lists 1980)
                           Aeromonas hydrophila subsp. anaerogenes Schubert 1964 (Approved Lists 1980)