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 "Betaproteobacteria" Garrity et al., 2006 [monotypic]
                 Class Betaproteobacteriaᵀ Garrity et al. 2006
                   Order Neisseriales Tønjum 2006
                     Family Neisseriaceaeᵀ Prévot 1933 (Approved Lists 1980)
                       Genus Kingella Henriksen and Bøvre 1976 (Approved Lists 1980)
                         Kingella oralis corrig. Dewhirst et al. 1993