Clostridium estertheticum estertheticum (Collins et al. 1993) Spring et al. 2003 Clostridium estertheticum estertheticum (Collins 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 estertheticum (Collins et al. 1993) Spring et al. 2003 Clostridium estertheticum Collins et al. 1993 emend. Spring et al. 2003 Clostridium estertheticum laramiense (Kalchayanand et al. 1993) Spring et al. 2003 Clostridium estertheticum estertheticum (Collins et al. 1993) Spring et al. 2003 Clostridium estertheticum Collins et al. 1993 emend. 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 List Editor Validation of the publication of new names and new combinations previously effectively published outside the IJSB. List No. 44. 1993 43 1 188 189 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-43-1-188 Collins M.D. Rodrigues U.M. Dainty R.H. Edwards R.A. Roberts T.A. Taxonomic studies on a psychrophilic Clostridium from vacuum-packed beef: description of Clostridium estertheticum sp. nov. 1992 96 235 240 FEMS Microbiology Letters FEMS Microbiol Lett 0378-1097 1574-6968 10.1111/j.1574-6968.1992.tb05423.x 1383083 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 Clostridium estertheticum Collins et al. 1993 emend. 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