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 Thermotogati Battistuzzi and Hedges 2024
               Phylum Synergistota Jumas-Bilak et al. 2021
                 Class Synergistiaᵀ Jumas-Bilak et al. 2009 [monotypic]
                   Order Synergistalesᵀ Jumas-Bilak et al. 2009
                     Family Synergistaceaeᵀ Jumas-Bilak et al. 2009
                       01 Genus Acetomicrobium Soutschek et al. 1985
                       02 Genus Aminivibrio Honda et al. 2013
                       03 Genus Aminobacterium Baena et al. 1999
                       04 Genus Aminomonas Baena et al. 1999 [monotypic]
                       05 Genus Cloacibacillus Ganesan et al. 2008
                       06 Genus Fretibacterium Vartoukian et al. 2013 [monotypic]
                       07 Genus Lactivibrio Qiu et al. 2014 [monotypic]
                       08 Genus Synergistesᵀ Allison et al. 1993 [monotypic]
                       09 Genus Thermanaerovibrio Baena et al. 1999
                       10 Genus Thermovirga Dahle and Birkeland 2006 [monotypic]
                       11 Genus "Caenicola" El Houari et al. 2025 nom. inval.
                       12 Genus "Candidatus Caccocola" Gilroy et al. 2022
                       13 Genus "Candidatus Equadaptatus" Gilroy et al. 2022 nom. pro-inval.