procaryotes
   Domain Archaea Woese et al. 1990 stat. inval. see Domain Archaea Woese et al. 2024
     Phylum Euryarchaeota Garrity and Holt 2002 stat. inval. see Kingdom Methanobacteriati (Garrity and Holt 2023) Oren and Göker 2024
       Class Halobacteria Grant et al. 2001 nom. inval. see Class Halobacteria Grant et al. 2002
         Order Halobacteriales Grant and Larsen 1989
           Family Halobacteriaceae Gibbons 1974 (Approved Lists 1980)
             Genus Halobaculum Oren et al. 1995