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 Alphaproteobacteria Garrity et al. 2006
                   Order Hyphomicrobiales Douglas 1957 (Approved Lists 1980)
                     Family Xanthobacteraceae Lee et al. 2005
                       Genus Xanthobacterᵀ Wiegel et al. 1978 (Approved Lists 1980)
                         1 Xanthobacter agilis Jenni and Aragno 1988
                         2 Xanthobacter aminoxidans Doronina and Trotsenko 2003
                         3 Xanthobacter autotrophicusᵀ (Baumgarten et al. 1974) Wiegel et al. 1978 (Approved Lists 1980)
                         4 Xanthobacter flavus Malik and Claus 1979 (Approved Lists 1980)
                         5 Xanthobacter tagetidis Padden et al. 1997
                         6 Xanthobacter viscosus Doronina and Trotsenko 2003