[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Proteobacteria" Garrity et al. 2005 stat. inval. see Phylum Pseudomonadota Garrity et al. 2021
       Class Alphaproteobacteria Garrity et al. 2006
         Order Rhodobacterales Garrity et al. 2006
           Family Rhodobacteraceae Garrity et al. 2006 nom. illeg. see Family Paracoccaceae Liang et al. 2022
             Genus Hyphomonas (ex Pongratz 1957) Moore et al. 1984
               1 Hyphomonas polymorpha (ex Pongratz 1957) Moore et al. 1984
               2 Hyphomonas adhaerens Weiner et al. 2000
               3 Hyphomonas hirschiana Weiner et al. 1985
               4 Hyphomonas jannaschiana Weiner et al. 1985
               5 Hyphomonas johnsonii Weiner et al. 2000
               6 Hyphomonas neptunium (Leifson 1964) Moore et al. 1984
               7 Hyphomonas oceanitis Weiner et al. 1985
               8 Hyphomonas rosenbergii Weiner et al. 2000