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 Gammaproteobacteriaᵀ Garrity et al. 2005 Order Methylococcales Bowman 2005 Family Methylococcaceaeᵀ Whittenbury and Krieg 1984 01 Genus Methylicorpusculum Saidi-Mehrabad et al. 2020 02 Genus Methylobacter Bowman et al. 1993 03 Genus Methylocaldum Bodrossy et al. 1998 04 Genus Methylococcusᵀ Foster and Davis 1966 (Approved Lists 1980) 05 Genus Methylocucumis Pandit and Rahalkar 2019 06 Genus Methylogaea Geymonat et al. 2011 [monotypic] 07 Genus Methyloglobulus Deutzmann et al. 2015 08 Genus Methylomagnum Khalifa et al. 2015 09 Genus Methylomarinum Hirayama et al. 2013 [monotypic] 10 Genus Methylomicrobium Bowman et al. 1995 11 Genus Methylomonas (ex Leadbetter 1974) Whittenbury and Krieg 1984 12 Genus Methyloparacoccus Hoefman et al. 2014 [monotypic] 13 Genus Methyloprofundus Tavormina et al. 2015 [monotypic] 14 Genus Methylosarcina Wise et al. 2001 15 Genus Methylosoma Rahalkar et al. 2007 [monotypic] 16 Genus Methylosphaera Bowman et al. 1998 [monotypic] 17 Genus Methyloterricola Frindte et al. 2017 18 Genus Methylovulum Iguchi et al. 2011 [monotypic] 19 Genus "Methylolobus" Rahalkar et al. 2020 nom. inval. 20 Genus "Methylovarius" Romanovskaya 1984 nom. inval. 21 Genus "Candidatus Methanofishera" Russell et al. 2022 22 Genus "Candidatus Methylospira" Danilova et al. 2020