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 Pasteurellales Garrity et al. 2005 [monotypic]
                     Family Pasteurellaceaeᵀ Pohl 1981
                       Genus Mannheimia Angen et al. 1999
                         1 Mannheimia caviae Christensen et al. 2011
                         2 Mannheimia glucosida Angen et al. 1999
                         3 Mannheimia granulomatis (Ribeiro et al. 1990) Angen et al. 1999
                         4 Mannheimia haemolytica (Newsom and Cross 1932) Angen et al. 1999
                         5 Mannheimia ruminalis Angen et al. 1999
                         6 Mannheimia varigena Angen et al. 1999