Schizomycetes von Nägeli 1857 (Approved Lists 1980) Schizomycetes von Nägeli 1857 (Approved Lists 1980) Eubacteriales Buchanan 1917 (Approved Lists 1980) emend. Tindall 2019 Actinomycetales Buchanan 1917 (Approved Lists 1980) emend. Salam et al. 2020 Caryophanales Peshkoff 1939 (Approved Lists 1980) Spirochaetales Buchanan 1917 (Approved Lists 1980) emend. Hördt et al. 2020 Mycoplasmatales Freundt 1955 (Approved Lists 1980) emend. Gupta et al. 2019 Beggiatoales Buchanan 1957 (Approved Lists 1980) Breed R.S. Breed R.S. Murray E.G.D. Smith N.R. Considerations influencing the classification used in this edition of the Manual 1957 7 4 14 Bergey's Manual of Determinative Bacteriology The Williams and Wilkins Co. Baltimore This taxon pre-dates the Code of Nomenclature of Bacteria and therefore does not have a nomenclatural type.