Domain Archaea Woese et al. 1990
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   Phylum Euryarchaeota Garrity and Holt 2001
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     Class Halobacteria Grant et al. 2001 see Class Halobacteria Grant et al. 2002
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       Order Halobacteriales Grant and Larsen 1989
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         Family Halobacteriaceae Gibbons 1974 (Approved Lists 1980)
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           Genus Natronococcus Tindall et al. 1984
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