Tyzzerella neopropionica (Tholozan et al. 1995) Yutin and Galperin 2013 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 Lachnospiraceae Rainey 2010 Tyzzerella Yutin and Galperin 2013 Tyzzerella neopropionica (Tholozan et al. 1995) Yutin and Galperin 2013 Tyzzerella Yutin and Galperin 2013 Tyzzerella nexilis (Holdeman and Moore 1974) Yutin and Galperin 2013 Tyzzerella colina (Berkhoff 1985) Yutin and Galperin 2013 Tyzzerella lactatifermentans (van der Wielen et al. 2002) Yutin and Galperin 2013 Tyzzerella piliformis (Duncan et al. 1993) Yutin and Galperin 2013 Tyzzerella propionica (Cardon and Barker 1946) Yutin and Galperin 2013 Tyzzerella neopropionica (Tholozan et al. 1995) Yutin and Galperin 2013 Clostridium neopropionicum Tholozan et al. 1995 Anaerotignum neopropionicum (Tholozan et al. 1995) Ueki et al. 2017 Ueki A. Goto K. Ohtaki Y. Kaku N. Ueki K. Description of Anaerotignum aminivorans gen. nov., sp. nov., a strictly anaerobic, amino-acid-decomposing bacterium isolated from a methanogenic reactor, and reclassification of Clostridium propionicum, Clostridium neopropionicum and Clostridium lactatifermentans as species of the genus Anaerotignum. 2017 67 10 4146 4153 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.002268 28905695 List Editor Validation List no. 55. Validation of the publication of new names and new combinations previously effectively published outside the IJSB. 1995 45 4 879 880 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-45-4-879 Collins M.D. Lawson P.A. Willems A. Cordoba J.J. Fernandez-Garayzabal J. Garcia P. Cai J. Hippe H. Farrow J.A.E. The phylogeny of the genus Clostridium: proposal of five new genera and eleven new species combinations. 1994 44 4 812 826 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-44-4-812 7981107 Yutin N. Galperin M.Y. A genomic update on clostridial phylogeny: Gram-negative spore formers and other misplaced clostridia. 2013 15 10 2631 2641 Environmental Microbiology Environ Microbiol 1462-2912 1462-2920 10.1111/1462-2920.12173 23834245