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 Thiotrichales Garrity et al. 2005
                     Family Francisellaceae Sjöstedt 2005 [monotypic]
                       Genus Francisellaᵀ Dorofe'ev 1947 (Approved Lists 1980)
                         1 Francisella guangzhouensis Qu et al. 2013
                         2 Francisella halioticida Brevik et al. 2012
                         3 Francisella hispaniensis Huber et al. 2010
                         4 Francisella noatunensis (Mikalsen et al. 2007) Ottem et al. 2009
                         5 Francisella philomiragia (Jensen et al. 1969) Hollis et al. 1990
                         6 Francisella piscicida Ottem et al. 2008
                         7 Francisella tularensis (McCoy and Chapin 1912) Dorofe'ev 1947 (Approved Lists 1980)