[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum "Proteobacteria" Garrity et al. 2005 see Superphylum Proteobacteria Craig et al. 2010
       Class Alphaproteobacteria Garrity et al. 2006
         Order Rhizobiales Kuykendall 2006
           Family Beijerinckiaceae Garrity et al. 2006
             Genus Methylocella Dedysh et al. 2000
               1 Methylocella palustris Dedysh et al. 2000
               2 Methylocella tundrae Dedysh et al. 2004
               3 Methylocella silvestris Dunfield et al. 2003