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 Succinivibrionaceae Hippe et al. 1999
                       Genus Ruminobacter (ex Sijpesteijn 1949) Stackebrandt and Hippe 1987 [monotypic]
                         Ruminobacter amylophilusᵀ (Hamlin and Hungate 1956) Stackebrandt and Hippe 1987