Hungateiclostridium saccincola (Koeck et al. 2016) Zhang et al. 2018 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 Oscillospiraceae Peshkoff 1940 (Approved Lists 1980) emend. Tindall 2019 Acetivibrio Patel et al. 1980 emend. Tindall 2019 Hungateiclostridium saccincola (Koeck et al. 2016) Zhang et al. 2018 Acetivibrio Patel et al. 1980 emend. Tindall 2019 Hungateiclostridium thermocellum (Viljoen et al. 1926) Zhang et al. 2018 Hungateiclostridium cellulolyticum (Patel et al. 1980) Zhang et al. 2018 Hungateiclostridium aldrichii (Yang et al. 1990) Zhang et al. 2018 Hungateiclostridium alkalicellulosi (Zhilina et al. 2006) Zhang et al. 2018 Hungateiclostridium clariflavum (Shiratori et al. 2009) Zhang et al. 2018 Hungateiclostridium straminisolvens (Kato et al. 2004) Zhang et al. 2018 Hungateiclostridium mesophilum Rettenmaier et al. 2019 Herbivorax saccincola Koeck et al. 2016 Hungateiclostridium saccincola (Koeck et al. 2016) Zhang et al. 2018 Acetivibrio saccincola (Koeck et al. 2016) Tindall 2019 Koeck D.E. Mechelke M. Zverlov V.V. Liebl W. Schwarz W.H. Herbivorax saccincola gen. nov., sp. nov., a cellulolytic, anaerobic, thermophilic bacterium isolated via in sacco enrichments from a lab scale biogas reactor 2016 66 11 4458 4463 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.001374 27499077 Zhang X. Tu B. Dai L.-R. Lawson P.A. Zheng Z.-Z. Liu L.-Y. Deng Y. Zhang H. Cheng L. Petroclostridium xylanilyticum gen. nov., sp. nov., a xylan-degrading bacterium isolated from an oilfield, and reclassification of clostridial cluster III members into four novel genera in a new Hungateiclostridiaceae fam. nov. 2018 68 10 3197 3211 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.002966 30124399 Zhang X. Tu B. Dai L.-R. Lawson P.A. Zheng Z.-Z. Liu L.-Y. Deng Y. Zhang H. Cheng L. Petroclostridium xylanilyticum gen. nov., sp. nov., a xylan-degrading bacterium isolated from an oilfield, and reclassification of clostridial cluster III members into four novel genera in a new Hungateiclostridiaceae fam. nov. 2018 68 10 3197 3211 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.002966 30124399