[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Proteobacteria" Garrity et al. 2005 stat. inval. see Phylum Pseudomonadota Garrity et al. 2021
       Class Betaproteobacteria Garrity et al. 2006
         Order Methylophilales Garrity et al. 2006 see Order Spirillales Prévot 1940 (Approved Lists 1980)
           Family Methylophilaceae Garrity et al. 2006
             Genus Methylobacillus Yordy and Weaver 1977 (Approved Lists 1980)
               1 Methylobacillus glycogenes Yordy and Weaver 1977 (Approved Lists 1980)
               2 Methylobacillus flagellatus Govorukhina et al. 1998
               3 Methylobacillus pratensis Doronina et al. 2004