living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Prokaryotae see Superkingdom Prokarya
     Kingdom Monera Haeckel 1866 see Domain Bacteria Woese et al. 1990
       Division Bacteria (Haeckel 1894) see Domain Bacteria Woese et al. 1990
         "Gram-negative aerobic rods and cocci"
           Family Methylmonadaceae see Family Methylococcaceae Whittenbury and Krieg 1984
             1 Genus Methylomonas (ex Leadbetter 1974) Whittenbury and Krieg 1984
             2 Genus Methylococcus Foster and Davis 1966 (Approved Lists 1980)