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 "Vibrionales" Garrity & Holt, 2001 [monotypic]
                     Family Vibrionaceaeᵀ Véron 1965 (Approved Lists 1980)
                       Genus Photobacterium Beijerinck 1889 (Approved Lists 1980)
                         Photobacterium damselae corrig. (Love et al. 1982) Smith et al. 1991
                           1 Photobacterium damselae subsp. damselaeᵀ corrig. (Love et al. 1982) Gauthier et al. 1995
                           2 Photobacterium damselae subsp. piscicida corrig. (ex Janssen and Surgalla 1968) Gauthier et al. 1995