Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
             Domain Archaea Woese et al. 1990 [paraphyletic]
               Phylum Euryarchaeota Garrity and Holt 2001
                 Class Halobacteria Grant et al. 2002 [monotypic]
                   Order Halobacterialesᵀ Grant and Larsen 1989 [monotypic]
                     Family Halobacteriaceaeᵀ Gibbons 1974 (Approved Lists 1980)
                       Genus Haloarcula Torreblanca et al. 1986
                         1 Haloarcula amylolytica Yang et al. 2007
                         2 Haloarcula argentinensis Ihara et al. 1997
                         3 Haloarcula hispanica Juez et al. 1986
                         4 Haloarcula japonica Takashina et al. 1991
                         5 Haloarcula marismortui (ex Volcani 1940) Oren et al. 1990
                         6 Haloarcula quadrata Oren et al. 1999
                         7 Haloarcula salaria Namwong et al. 2011
                         8 Haloarcula tradensis Namwong et al. 2011
                         9 Haloarcula vallismortis (González et al. 1979) Torreblanca et al. 1986