Moorellales Lv et al. 2020 Moorella Collins et al. 1994 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 Moorellales Lv et al. 2020 Clostridia Rainey 2010 Haloanaerobiales (sic) Rainey et al. 1995 Halanaerobiales corrig. Rainey et al. 1995 Natranaerobiales Mesbah et al. 2007 Thermoanaerobacterales (Garrity and Holt 2001) Wiegel 2010 emend. Lv et al. 2020 Eubacteriales Buchanan 1917 (Approved Lists 1980) emend. Tindall 2019 Clostridiales Prévot 1953 (Approved Lists 1980) Thermoanaerobacteriales Garrity and Holt 2001 Syntrophomonadales Sorokin et al. 2016 Thermosediminibacterales Zhang et al. 2019 Thermovenabulales Parks et al. 2018 Koleobacterales Sakamoto et al. 2021 Monoglobacales None 2015 Incertae sedis 650 Sorokin et al. 2021 Borkfalkiales corrig. Hildebrand et al. 2019 Comantemales (sic) Hildebrand et al. 2019 Moorellaceae Lv et al. 2020 Calderihabitantaceae Lv et al. 2020 Zhaonellaceae Lv et al. 2020 Desulfitibacteraceae Lv et al. 2020 Lv X.-M. Yang M. Dai L.-R. Tu B. Chang C. Huang Y. Deng Y. Lawson P.A. Zhang H. Cheng L. Tang Y.-Q. Zhaonella formicivorans gen. nov., sp. nov., an anaerobic formate-utilizing bacterium isolated from Shengli oilfield, and proposal of four novel families and Moorellales ord. nov. in the phylum Firmicutes. 2020 70 5 3361 3373 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.004178 32375973