Tyzzerella piliformis (Duncan et al. 1993) Yutin and Galperin 2013 Tyzzerella piliformis (Duncan et al. 1993) 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 piliformis (Duncan et al. 1993) 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 neopropionica (Tholozan et al. 1995) Yutin and Galperin 2013 Tyzzerella propionica (Cardon and Barker 1946) Yutin and Galperin 2013 Clostridium piliforme (ex Tyzzer 1917) Duncan et al. 1993 Tyzzerella piliformis (Duncan et al. 1993) Yutin and Galperin 2013 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 Clostridium piliforme (ex Tyzzer 1917) Duncan et al. 1993 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 Yutin and Galperin 2013 did not formally propose this new combination.