Protomonas Urakami and Komagata 1984 Protomonas Urakami and Komagata 1984 Protomonas extorquens (ex Bassalik 1913) Urakami and Komagata 1984 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Proteobacteria (sic) Garrity et al. 2021 Pseudomonadota corrig. Garrity et al. 2021 Alphaproteobacteriota (sic) Garrity et al. 2021 Alphaproteobacteria Garrity et al. 2006 Hyphomicrobiales Douglas 1957 (Approved Lists 1980) emend. Hördt et al. 2020 Methylobacteriaceae Garrity et al. 2006 emend. Hördt et al. 2020 Protomonas Urakami and Komagata 1984 Methylobacteriaceae Garrity et al. 2006 emend. Hördt et al. 2020 Microvirga Kanso and Patel 2003 emend. Zhang et al. 2019 Meganema Thomsen et al. 2006 Methylobacterium Patt et al. 1976 (Approved Lists 1980) emend. Alessa et al. 2021 Psychroglaciecola Qu et al. 2014 Methylorubrum Green and Ardley 2018 Enterovirga Chen et al. 2017 Protomonas extorquens (ex Bassalik 1913) Urakami and Komagata 1984 Urakami T. Komagata K. Protomonas, a new genus of facultatively methylotrophic bacteria. 1984 34 2 188 201 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-34-2-188 Bousfield I.J. Green P.N. Reclassification of bacteria of the genus Protomonas Urakami and Komagata 1984 in the genus Methylobacterium (Patt, Cole, and Hanson) emend. Green and Bousfield 1983. 1985 35 2 209 209 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-35-2-209 Methylobacterium Patt et al. 1976 (Approved Lists 1980) emend. Alessa et al. 2021 Urakami T. Komagata K. Protomonas, a new genus of facultatively methylotrophic bacteria. 1984 34 2 188 201 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-34-2-188 Bousfield I.J. Green P.N. Reclassification of bacteria of the genus Protomonas Urakami and Komagata 1984 in the genus Methylobacterium (Patt, Cole, and Hanson) emend. Green and Bousfield 1983. 1985 35 2 209 209 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-35-2-209