Geosporobacter subterraneus Klouche et al. 2007 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Firmicutes (sic) Gibbons and Murray 2021 Bacillota corrig. Gibbons and Murray 2021 Firmacutes (sic) Gibbons and Murray 2021 Clostridia Rainey 2010 Eubacteriales Buchanan 1917 (Approved Lists 1980) emend. Tindall 2019 Clostridiaceae Pribram 1933 (Approved Lists 1980) emend. Spring 2021 Geosporobacter Klouche et al. 2007 Geosporobacter subterraneus Klouche et al. 2007 Geosporobacter Klouche et al. 2007 Geosporobacter ferrireducens Hong et al. 2021 Geosporobacter subterraneus Klouche et al. 2007 Klouche N. Fardeau M.L. Lascourrèges J.F. Cayol J.L. Hacene H. Thomas P. Magot M. Geosporobacter subterraneus gen. nov., sp. nov., a spore-forming bacterium isolated from a deep subsurface aquifer 2007 57 8 1757 1761 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.64642-0 17684251 Klouche N. Fardeau M.L. Lascourrèges J.F. Cayol J.L. Hacene H. Thomas P. Magot M. Geosporobacter subterraneus gen. nov., sp. nov., a spore-forming bacterium isolated from a deep subsurface aquifer 2007 57 8 1757 1761 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.64642-0 17684251