Clostridium estertheticum laramiense (Kalchayanand et al. 1993) Spring et al. 2003 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 Clostridium Prazmowski 1880 (Approved Lists 1980) emend. Lawson and Rainey 2016 Clostridium estertheticum Collins et al. 1993 emend. Spring et al. 2003 Clostridium estertheticum laramiense (Kalchayanand et al. 1993) Spring et al. 2003 Clostridium estertheticum Collins et al. 1993 emend. Spring et al. 2003 Clostridium estertheticum estertheticum (Collins et al. 1993) Spring et al. 2003 Clostridium laramiense corrig. Kalchayanand et al. 1993 Clostridium laramie (sic) Kalchayanand et al. 1993 Clostridium estertheticum laramiense (Kalchayanand et al. 1993) Spring et al. 2003 Spring S. Merkhoffer B. Weiss N. Kroppenstedt R.M. Hippe H. Stackebrandt E. Characterization of novel psychrophilic clostridia from an Antarctic microbial mat: description of Clostridium frigoris sp. nov., Clostridium lacusfryxellense sp. nov., Clostridium bowmanii sp. nov. and Clostridium psychrophilum sp. nov. and reclassification of Clostridium laramiense as Clostridium estertheticum subsp. laramiense subsp. nov. 2003 53 4 1019 1029 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.02554-0 12892121 Spring S. Merkhoffer B. Weiss N. Kroppenstedt R.M. Hippe H. Stackebrandt E. Characterization of novel psychrophilic clostridia from an Antarctic microbial mat: description of Clostridium frigoris sp. nov., Clostridium lacusfryxellense sp. nov., Clostridium bowmanii sp. nov. and Clostridium psychrophilum sp. nov. and reclassification of Clostridium laramiense as Clostridium estertheticum subsp. laramiense subsp. nov. 2003 53 4 1019 1029 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.02554-0 12892121