Domain Archaea Woese et al. 1990
   Phylum Euryarchaeota Garrity and Holt 2001
     Class Halobacteria Grant et al. 2001 see Class Halobacteria Grant et al. 2002
       Order Halobacteriales Grant and Larsen 1989
         Family Halobacteriaceae Gibbons 1974 (Approved Lists 1980)
           Genus Haloarcula Torreblanca et al. 1986
           Genus Halobaculum Oren et al. 1995
           Genus Halococcus Schoop 1935 (Approved Lists 1980)
           Genus Haloferax Torreblanca et al. 1986
           Genus Halogeometricum Montalvo-Rodríguez et al. 1998
           Genus Halorhabdus Wainø et al. 2000
           Genus Halorubrum McGenity and Grant 1996
           Genus Haloterrigena Ventosa et al. 1999
           Genus Natrialba Kamekura and Dyall-Smith 1995 nom. inval. see Genus Natrialba Kamekura and Dyall-Smith 1996
           Genus Natrinema McGenity et al. 1998
           Genus Natronobacterium Tindall et al. 1984
           Genus Natronococcus Tindall et al. 1984
           Genus Natronomonas Kamekura et al. 1997
           Genus Natronorubrum Xu et al. 1999
           1 Genus Halobacterium Elazari-Volcani 1957 (Approved Lists 1980)