Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 2024
             Kingdom Bacillatiᵀ (Gibbons and Murray 1978) Oren and Göker 2024
               Phylum Bacillotaᵀ Gibbons and Murray 2021
                 Class Syntrophomonadia Chuvochina et al. 2024
                   Order Syntrophomonadalesᵀ Chuvochina et al. 2024
                     Family Syntrophomonadaceaeᵀ Zhao et al. 1993
                       Genus Syntrophomonasᵀ McInerney et al. 1982
                         1 Syntrophomonas bryantii (Stieb and Schink 1985) Wu et al. 2006
                         2 Syntrophomonas cellicola Wu et al. 2006
                         3 Syntrophomonas curvata Zhang et al. 2004
                         4 Syntrophomonas erecta Zhang et al. 2005
                         5 Syntrophomonas palmitatica Hatamoto et al. 2007
                         6 Syntrophomonas sapovorans Roy et al. 1987
                         7 Syntrophomonas wolfeiᵀ McInerney et al. 1982
                         8 Syntrophomonas zehnderi Sousa et al. 2007