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The nomenclatural types of the orders Acholeplasmatales, Halanaerobiales, Halobacteriales, Methanobacteriales, Methanococcales, Methanomicrobiales, Planctomycetales, Prochlorales, Sulfolobales, Thermococcales, Thermoproteales and Verrucomicrobiales are the genera Acholeplasma, Halanaerobium, Halobacterium, Methanobacterium, Methanococcus, Methanomicrobium, Planctomyces, Prochloron, Sulfolobus, Thermococcus, Thermoproteus and Verrucomicrobium, respectively. Opinion 79

Correspondence
Hans G. Trüper
trueper{at}uni-bonn.de

ABSTRACT

The Judicial Commission of the International Committee on Systematics of Prokaryotes has corrected the nomenclatural types of 12 orders: Acholeplasmatales, Halanaerobiales, Halobacteriales, Methanobacteriales, Methanococcales, Methanomicrobiales, Planctomycetales, Prochlorales, Sulfolobales, Thermococcales, Thermoproteales and Verrucomicrobiales.

In a Request for an Opinion, Euzéby & Tindall (2001) proposed that the Judicial Commission correct the nomenclatural types of certain orders, for which, in violation of Rules 15 and 21a of the Bacteriological Code (Lapage et al., 1992), families instead of genera had been proposed as nomenclatural types.

The Judicial Commission decided in favour of this Request that the 12 orders in question have the following genera as nomenclatural types: order Acholeplasmatales Freundt et al. 1984, genus Acholeplasma Edward and Freundt 1970 (Approved Lists 1980) (Skerman et al., 1980); Halanaerobiales Rainey and Zhilina 1995, Halanaerobium Zeikus et al. 1984; Halobacteriales Grant and Larsen 1989, Halobacterium Elazari-Volcani 1957 (Approved Lists 1980) (Skerman et al., 1980); Methanobacteriales Balch and Wolfe 1981, Methanobacterium Kluyver and van Niel 1936 (Approved Lists 1980) (Skerman et al., 1980); Methanococcales Balch and Wolfe 1981, Methanococcus Kluyver and van Niel 1936 emend. Barker 1936 (Approved Lists 1980) (Skerman et al., 1980); Methanomicrobiales Balch and Wolfe 1981, Methanomicrobium Balch and Wolfe 1981; Planctomycetales Schlesner and Stackebrandt 1987, Planctomyces Gimesi 1924 (Approved Lists 1980) (Skerman et al., 1980); Prochlorales (ex Lewin 1977) Florenzano et al. 1986, Prochloron (ex Lewin 1977) Florenzano et al. 1986; Sulfolobales Stetter 1989, Sulfolobus Brock et al. 1972 (Approved Lists 1980) (Skerman et al., 1980); Thermococcales Zillig et al. 1988, Thermococcus Zillig 1983; Thermoproteales Zillig and Stetter 1982, Thermoproteus Zillig and Stetter 1982; Verrucomicrobiales Ward-Rainey et al. 1996, Verrucomicrobium Schlesner 1988.

REFERENCES

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Euzéby, J. P. & Tindall, B. J. (2001). Nomenclatural type of orders: corrections necessary according to Rules 15 and 21a of the Bacteriological Code (1990 Revision), and designation of appropriate nomenclatural types of classes and subclasses. Request for an Opinion. Int J Syst Evol Microbiol 51, 725–727.[Abstract]

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Schlesner, H. & Stackebrandt, E. (1987). Planctomycetaceae fam. nov. and Planctomycetales ord. nov. In Validation of the Publication of New Names and New Combinations Previously Effectively Published Outside the IJSB, List no. 23. Int J Syst Bacteriol 37, 179–180.[Free Full Text]

Skerman, V. B. D., McGowan, V. & Sneath, P. H. A. (1980). Approved lists of bacterial names. Int J Syst Bacteriol 30, 225–420.[Free Full Text]

Stetter, K. O. (1989). Sulfolobales ord. nov. and Sulfolobaceae fam. nov. In Validation of the Publication of New Names and New Combinations Previously Effectively Published Outside the IJSB, List no. 31. Int J Syst Bacteriol 39, 495–497.[Free Full Text]

Ward-Rainey, N., Rainey, F. A., Schlesner, H. & Stackebrandt, E. (1996). Verrucomicrobiaceae fam. nov. and Verrucomicrobiales ord. nov. In Validation of the Publication of New Names and New Combinations Previously Effectively Published Outside the IJSB, List no. 57. Int J Syst Bacteriol 46, 625–626.[Free Full Text]

Zeikus, G., Hegge, P. W., Thompson, T. E., Phelps, T. J. & Langworthy, T. A. (1984). Haloanaerobium gen. nov. and Haloanaerobium praevalens sp. nov. In Validation of the Publication of New Names and New Combinations Previously Effectively Published Outside the IJSB, List no. 16. Int J Syst Bacteriol 34, 503–504.[Abstract/Free Full Text]

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Zillig, W. & Stetter, K. O. (1982). Thermoproteaceae fam. nov., Thermoproteales ord. nov., Thermoproteus gen. nov. and Thermoproteus tenax sp. nov. In Validation of the Publication of New Names and New Combinations Previously Effectively Published Outside the IJSB, List no. 8. Int J Syst Bacteriol 32, 266–268.[Free Full Text]

Zillig, W., Holz, I., Klenk, H.-P., Trent, J., Wunderl, S., Janekovic, D., Imsel, E. & Haas, B. (1988). Thermococcaceae fam. nov. and Thermococcales ord. nov. In Validation of the Publication of New Names and New Combinations Previously Effectively Published Outside the IJSB, List no. 24. Int J Syst Bacteriol 38, 136–137.[Abstract/Free Full Text]

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