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 "Alphaproteobacteria" Garrity et al., 2006 [monotypic]
                 Class Alphaproteobacteriaᵀ Garrity et al. 2006
                   Order Rhizobiales Kuykendall 2006
                     Family Methylocystaceae Bowman 2006
                       Genus Methylopila Doronina et al. 1998
                         1 Methylopila capsulataᵀ Doronina et al. 1998
                         2 Methylopila helvetica Doronina et al. 2000
                         3 Methylopila jiangsuensis Li et al. 2011
                         4 Methylopila musalis Doronina et al. 2013
                         5 Methylopila oligotropha Poroshina et al. 2014