Order Bacteroidales

Warning: In the List of Prokaryotic names with Standing in Nomenclature, an arrow () only indicates the sequence of valid publication of names and does not mean that the last name in the sequence must be used (see: Introduction).

Classification (Warning: see also the file "Classification of prokaryotes: Introduction").

For a detailed description of this taxon see Bergey’s Manual of Systematics of Archaea and Bacteria (BMSAB).


Bacteroidales Krieg 2012, ord. nov. (Type oder of the class ¤ Bacteroidia Krieg 2012).
Type genus: ¤ Bacteroides Castellani and Chalmers 1919 (Approved Lists 1980).
Etymology: N.L. masc. n. Bacteroides, type genus of the order; suff. - ales, ending to denote an order; N.L. fem. pl. n. Bacteroidales, the Bacteroides order.
Valid publication: Validation List no. 143. Int. J. Syst. Evol. Microbiol., 2012, 62, 1-4.
Effective publication: KRIEG (N.R.): Order I. Bacteroidales ord. nov. In N.R. KRIEG, J.T. STALEY, D.R. BROWN, B.P. HEDLUND, B.J. PASTER, N.L. WARD, W. LUDWIG and W.B. WHITMAN (editors), Bergey’s Manual of Systematic Bacteriology, second edition, vol. 4 (The Bacteroidetes, Spirochaetes, Tenericutes (Mollicutes), Acidobacteria, Fibrobacteres, Fusobacteria, Dictyoglomi, Gemmatimonadetes, Lentisphaerae, Verrucomicrobia, Chlamydiae, and Planctomycetes), Springer, New York, 2011, p. 25.
Validation List no. 143 in IJSEM Online

Note: In Validation List No. 143, the year of publication of Bergey’s Manual of Systematic Bacteriology, 2nd edn, vol. 4 was erroneously cited as 2010. The correct year of publication should be 2011.
Reference: Erratum. Int. J. Syst. Evol. Microbiol., 2012, 62, 1016.
Erratum in IJSEM Online

Bacteroidales Krieg 2012 emend. Pikuta et al. 2017.
Reference: PIKUTA, E. V., LYU, Z., HOOVER, R. B., LIU, Y., PATEL, N. B., BUSSE, H.-J. and LAWSON, P. A. 2017. Williamwhitmania taraxaci gen. nov., sp. nov., a proteolytic anaerobe with a novel type of cytology from Lake Untersee in Antarctica, description of Williamwhitmaniaceae fam. nov., and emendation of the order Bacteroidales Krieg 2012. Int. J. Syst. Evol. Microbiol., 67, 4132-4145.
Original article.