Procaryotic Genera
   Domain "Bacteria" Woese et al. 1990
     Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980)
       Class "Clostridia" Garrity et al. 2001 nom. ined. see Class Clostridia Rainey 2010
         Order Haloanaerobiales Rainey and Zhilina 1995 see Order Halanaerobiales corrig. Rainey and Zhilina 1995
           Family Haloanaerobiaceae Oren et al. 1984 see Family Halanaerobiaceae corrig. Oren et al. 1984
             1 Genus Haloanaerobium see Genus Halanaerobium corrig. Zeikus et al. 1984
             2 Genus Halocella Simankova et al. 1994
             3 Genus Halothermothrix Cayol et al. 1994
             4 Genus Natroniella Zhilina et al. 1996