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?]
             Phylum Synergistetes Jumas-Bilak et al. 2009 [monotypic]
               Class Synergistiaᵀ Jumas-Bilak et al. 2009 [monotypic]
                 Order Synergistales Jumas-Bilak et al. 2009 [monotypic]
                   Family Synergistaceaeᵀ Jumas-Bilak et al. 2009
                     Genus Anaerobaculum Rees et al. 1997
                       1 Anaerobaculum hydrogeniformans Maune and Tanner 2012
                       2 Anaerobaculum mobile Menes and Muxí 2002
                       3 Anaerobaculum thermoterrenumᵀ Rees et al. 1997