Methylothermus Tsubota et al. 2005 emend. Hirayama et al. 2011 non Methylothermus Tindall 2019 Methylothermus Tsubota et al. 2005 emend. Hirayama et al. 2011 non Methylothermus Tindall 2019 Methylothermus thermalis Tsubota et al. 2005 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 Gammaproteobacteria Garrity et al. 2005 emend. Williams and Kelly 2013 Methylococcales Bowman 2005 Methylothermaceae (Hirayama et al. 2014) Tindall 2019 non Methylothermaceae Hirayama et al. 2014 Methylothermus Tsubota et al. 2005 emend. Hirayama et al. 2011 non Methylothermus Tindall 2019 Methylothermaceae (Hirayama et al. 2014) Tindall 2019 non Methylothermaceae Hirayama et al. 2014 Methylomarinovum Hirayama et al. 2014 Methylohalobius Heyer et al. 2005 Methylothermus thermalis Tsubota et al. 2005 Methylothermus subterraneus Hirayama et al. 2011 non Methylothermus subterraneus Hirayama et al. 2019 Tsubota J. Eshinimaev B.T.S. Khmelenina V.N. Trotsenko Y.A. Methylothermus thermalis gen. nov., sp. nov., a novel moderately thermophilic obligate methanotroph from a hot spring in Japan. 2005 55 5 1877 1884 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.63691-0 16166682 Hirayama H. Abe M. Miyazaki M. Nunoura T. Furushima Y. Yamamoto H. Takai K. Methylomarinovum caldicuralii gen. nov., sp. nov., a moderately thermophilic methanotroph isolated from a shallow submarine hydrothermal system, and proposal of the family Methylothermaceae fam. nov. 2014 64 3 989 999 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.058172-0 24425820 Hirayama H. Suzuki Y. Abe M. Miyazaki M. Makita H. Inagaki F. Uematsu K. Takai K. Methylothermus subterraneus sp. nov., a moderately thermophilic methanotroph isolated from a terrestrial subsurface hot aquifer 2011 61 11 2646 2653 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.028092-0 21148670 Methylothermus (Tsubota et al. 2005) Tindall 2019 non Methylothermus Tsubota et al. 2005 Tsubota J. Eshinimaev B.T.S. Khmelenina V.N. Trotsenko Y.A. Methylothermus thermalis gen. nov., sp. nov., a novel moderately thermophilic obligate methanotroph from a hot spring in Japan. 2005 55 5 1877 1884 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.63691-0 16166682 Boden R. Oren A. Proposal to designate Methylothermus subterraneus Hirayama et al. 2011 as the type species of the genus Methylothermus. Request for an Opinion. 2017 67 9 3685 3685 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.002208 28829036 Tindall B.J. On the nomenclatural types of Methylothermus thermalis Tsubota et al. 2005, Methylothermus Tsubota et al. 2005 and Methylothermaceae Hirayama et al. 2014, their status under the International Code of Nomenclature of Prokaryotes and valid publication of the names Methylothermus gen. nov., Methylothermus subterraneus Hirayama et al. and Methylothermaceae Hirayama et al. 2019 69 7 1890 1891 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.003220 30608227 Hirayama H. Suzuki Y. Abe M. Miyazaki M. Makita H. Inagaki F. Uematsu K. Takai K. Methylothermus subterraneus sp. nov., a moderately thermophilic methanotroph isolated from a terrestrial subsurface hot aquifer 2011 61 11 2646 2653 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.028092-0 21148670 Tindall B.J. The status of names whose nomenclatural types are based on strains deposited solely for patent purposes. 2019 69 8 2616 2620 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.003527 31215862 This genus name is illegitimate because the nomenclatural type is based upon a patent strain.