organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Kingdom Monera Haeckel 1866 see Domain Bacteria Woese et al. 1990 Phylum "chemoautotrophic bacteria" Class "methylomonads" see Order Methylococcales nom. inval. 1 Genus Methylomonas (ex Leadbetter 1974) Whittenbury and Krieg 1984 2 Genus Methylococcus Foster and Davis 1966 (Approved Lists 1980)