Methylothermaceae Hirayama et al. 2014 non Methylothermaceae Tindall 2019 Methylothermaceae Hirayama et al. 2014 non Methylothermaceae Tindall 2019 Methylothermus Tsubota et al. 2005 emend. Hirayama et al. 2011 non Methylothermus Tindall 2019 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 non Methylothermaceae Tindall 2019 Methylococcales Bowman 2005 Methylococcaceae Whittenbury and Krieg 1984 emend. Bowman et al. 1993 Incertae sedis 415 Orata et al. 2018 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 Methylomarinovum Hirayama et al. 2014 Methylohalobius Heyer et al. 2005 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 Methylothermaceae (Hirayama et al. 2014) Tindall 2019 non Methylothermaceae Hirayama et al. 2014 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 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 This family name is illegitimate because the nomenclatural type is based upon a patent strain.