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 Pseudomonadati (Gibbons and Murray 1978) Oren and Göker 2024
               Phylum Pseudomonadotaᵀ Garrity et al. 2021
                 Class Betaproteobacteria Garrity et al. 2006
                   Order Rhodocyclales Garrity et al. 2006
                     Family Zoogloeaceae Boden et al. 2017
                       01 Genus Aromatoleum Rabus et al. 2019
                       02 Genus Azoarcus Reinhold-Hurek et al. 1993
                       03 Genus Cognatazoarcus Huang et al. 2022
                       04 Genus Denitromonas (ex Orla-Jensen 1909) Reyes-Umana and Coates 2024
                       05 Genus Nitrogeniibacter Liao et al. 2021
                       06 Genus Niveibacterium Chun et al. 2016
                       07 Genus Parazoarcus Huang et al. 2022
                       08 Genus Pseudazoarcus Huang et al. 2022
                       09 Genus Pseudothauera Huang et al. 2022
                       10 Genus Thauera Macy et al. 1993
                       11 Genus Uliginosibacterium Weon et al. 2008 [monotypic]
                       12 Genus Zoogloeaᵀ Itzigsohn 1868 (Approved Lists 1980)
                       13 Genus "Denitraticella" Slobodkina et al. 2025 nom. inval.