A Methanobacteria a rendszertan szerint az Euryarchaeota egyik osztálya.[1] Az Euryarchaeota több osztályába tartoznak metanogén baktériumok, a Methanobacteria is ilyen.
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Woese, CR, Kandler O, Wheelis ML (1990). „Towards a natural system of organisms: proposal for the domains Archaea, Bacteria, and Eucarya”. Proc. Natl. Acad. Sci. USA87 (12), 4576–4579. o. DOI:10.1073/pnas.87.12.4576. PMID 2112744.
Boone, DR.szerk.: DR Boone and RW Castenholz, eds.: Class I. Methanobacteria class. nov., Bergey's Manual of Systematic Bacteriology Volume 1: The Archaea and the deeply branching and phototrophic Bacteria, 2nd, New York: Springer Verlag, 169. o. (2001). ISBN 978-0-387-98771-2
Garrity GM, Holt JG.szerk.: DR Boone and RW Castenholz, eds.: Phylum AII. Euryarchaeota phy. nov., Bergey's Manual of Systematic Bacteriology Volume 1: The Archaea and the deeply branching and phototrophic Bacteria, 2nd, New York: Springer Verlag, 169. o. (2001). ISBN 978-0-387-98771-2
Murray, RGE.szerk.: NR Krieg and JG Holt, eds.: The higher taxa, or, a place for everything..., Bergey's Manual of Systematic Bacteriology, Volume 1, 1st, Baltimore: The Williams & Wilkins Co., 169. o. (1983)
