Clostridium durum Smith and Cato 1974 (Approved Lists 1980) Paenibacillus azotofixans (Seldin et al. 1984) Ash et al. 1994 pro synon. Paenibacillus durus corrig. (Smith and Cato 1974) Collins et al. 1994 emend. Guella et al. 2019 Paenibacillus durus corrig. (Smith and Cato 1974) Collins et al. 1994 emend. Guella et al. 2019 Paenibacillus durum (sic) (Smith and Cato 1974) Collins et al. 1994 emend. Guella et al. 2019 Bacillus azotofixans Seldin et al. 1984 Berge O. Guinebretière M.H. Achouak W. Normand P. Heulin T. Paenibacillus graminis sp. nov. and Paenibacillus odorifer sp. nov., isolated from plant roots, soil and food. 2002 52 2 607 616 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.01883-0 11931174 Judicial Commission of the International Committee on Systematics of Prokaryotes Paenibacillus durus (Collins et al. 1994, formerly Clostridium durum Smith and Cato 1974) has priority over Paenibacillus azotofixans (Seldin et al. 1984). Opinion 73 2003 53 3 931 931 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.02496-0 12807223 Guella F. Porto R.Z. Sant'Anna F.H. Ambrosini A. Passaglia L.M.P. Genomic metrics analyses indicate that Paenibacillus azotofixans is not a later synonym of Paenibacillus durus. 2019 69 9 2870 2876 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.003572 31259683 Judicial Opinion 73 states that P. durus has priority over P. azotofixans and that the type strain of P. durus is VIP 6563 = ATCC 2773 = DSM 1735. The strains P3L5 = ATCC 35681 = DSM 5976 are associated with B. azotofixans.