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]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             Superphylum Terrabacteria Battistuzzi et al. 2004
               Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980)
                 Class Clostridia Rainey 2010
                   Order Halanaerobiales corrig. Rainey and Zhilina 1995
                     Family Halobacteroidaceae Zhilina and Rainey 1995
                       Genus Orenia Rainey and Stackebrandt 1995
                         1 Orenia marismortuiᵀ (Oren et al. 1988) Rainey et al. 1995
                         2 Orenia salinaria Mouné et al. 2000
                         3 Orenia sivashensis Zhilina et al. 2000
                         4 Orenia chitinitropha Sorokin and Kolganova 2014