Anaerobacter polyendosporus Duda et al. 1996 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 Anaerobacter polyendosporus Duda et al. 1996 Clostridium Prazmowski 1880 (Approved Lists 1980) emend. Lawson and Rainey 2016 Clostridium polyendosporum (Duda et al. 1996) Rainey et al. 2016 Anaerobacter polyendosporus Duda et al. 1996 List Editor Validation List no. 57. Validation of the publication of new names and new combinations previously effectively published outside the IJSB. 1996 46 2 625 626 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-46-2-625 8934914 Stackebrandt E. Kramer I. Swiderski J. Hippe H. Phylogenetic basis for a taxonomic dissection of the genus Clostridium 1999 24 253 258 FEMS Immunology and Medical Microbiology FEMS Immunol Med Microbiol 0928-8244 10397308 Duda V.I. Lebedinsky A.V. Mushegjan M.S. Mitjushina L.L. A new anaerobic bacterium, forming up to five endospores per cell - Anaerobacter polyendosporus gen. et spec. nov. 1987 148 121 127 Archives of Microbiology Arch Microbiol 0302-8933 1432-072X 10.1007/BF00425359