1. 
   Microbe Methanobacteriota

   Methanobacterium sp. MB1 Unnamed strain NameName close to Methanobacteriota
2. 
   Microbe Methanobacteriota

   Methanobacterium NameName close to Methanobacteriota
   under 1% of healthy people
3. 
   Microbe Methanobacteriota

   Methanobacterium formicicum NameName close to Methanobacteriota
   under 1% of healthy people
4. 
   Microbe Methanobacteriota

   Methanobacteriaceae NameName close to Methanobacteriota
5. 
   Microbe Methanobacteriota

   Methanobrevibacter NameIn the phylum Methanobacteriota
   18% of healthy people
6. 
   Microbe Methanobacteriota

   Methanobrevibacter smithii NameIn the phylum Methanobacteriota
   18% of healthy people
7. 
   Microbe Methanobacteriota

   Methanobrevibacter boviskoreani NameIn the phylum Methanobacteriota
8. 
   Microbe Methanobacteriota

   Methanosphaera cuniculi NameIn the phylum Methanobacteriota
   under 1% of healthy people
9. 
   Microbe Methanobacteriota

   Methanothermobacter NameIn the phylum Methanobacteriota
10. 
    Microbe Methanobacteriota

    Methanosphaera NameIn the phylum Methanobacteriota
    1.8% of healthy people
11. 
    Microbe Methanobacteriota

    Methanobrevibacter woesei NameIn the phylum Methanobacteriota
    under 1% of healthy people
12. 
    Microbe Methanobacteriota

    Methanobrevibacter wolinii NameIn the phylum Methanobacteriota
    under 1% of healthy people
13. 
    Microbe Methanobacteriota

    Methanosarcina NameIn the phylum Methanobacteriota
    under 1% of healthy people
14. 
    Microbe Methanobacteriota

    Methanobrevibacter arboriphilus NameIn the phylum Methanobacteriota
    under 1% of healthy people
15. 
    Microbe Methanobacteriota

    Methanocorpusculum NameIn the phylum Methanobacteriota
16. 
    Microbe Methanobacteriota

    Methanothrix NameIn the phylum Methanobacteriota
17. 
    Microbe Methanobacteriota

    Methanolinea NameIn the phylum Methanobacteriota
18. 
    Microbe Methanobacteriota

    Methanobrevibacter oralis NameIn the phylum Methanobacteriota
    under 1% of healthy people
19. 
    Microbe Methanobacteriota

    Methanothrix soehngenii NameIn the phylum Methanobacteriota
20. 
    Microbe Methanobacteriota

    Methanosphaera stadtmanae NameIn the phylum Methanobacteriota
    1.8% of healthy people
21. 
    Microbe Methanobacteriota

    Methanosarcina thermophila NameIn the phylum Methanobacteriota
    under 1% of healthy people
22. 
    Microbe Methanobacteriota

    Methanoculleus NameIn the phylum Methanobacteriota
    under 1% of healthy people
23. 
    Microbe Methanobacteriota

    Methanoculleus thermophilus NameIn the phylum Methanobacteriota
    under 1% of healthy people
24. 
    Microbe Methanobacteriota

    Methanimicrococcus NameIn the phylum Methanobacteriota
25. Research mSystems · 2025

    Elucidation of population-based bacterial adaptation to antimicrobial treatment by single-cell sequencing analysis of the gut microbiome of a hospital patient.

    Klebsiella pneumoniaeEnterococcus faecalis

    MeaningAbout Methanobacteriota
    PubMed ↗
26. 
    Microbe Thermoplasmatota

    Methanomassiliicoccus MeaningAbout Methanobacteriota
    under 1% of healthy people
27. Research Microorganisms · 2023

    Methanomethylophilus alvi gen. nov., sp. nov., a Novel Hydrogenotrophic Methyl-Reducing Methanogenic Archaea of the Order Methanomassiliicoccales Isolated from the Human Gut and Proposal of the Novel Family Methanomethylophilaceae fam. nov.

    Eggerthella lenta

    MeaningAbout Methanobacteriota
    PubMed ↗
28. Research mBio · 2020

    Syntrophy via Interspecies H2 Transfer between Christensenella and Methanobrevibacter Underlies Their Global Cooccurrence in the Human Gut.

    Bacteroides thetaiotaomicron

    MeaningAbout Methanobacteriota
    PubMed ↗
29. Research Gut microbes · 2024

    Archaea influence composition of endoscopically visible ileocolonic biofilms.

    Mediterraneibacter gnavus

    MeaningAbout Methanobacteriota
    PubMed ↗
30. Research EBioMedicine · 2019

    Co-culture of Methanobrevibacter smithii with enterobacteria during urinary infection.

    Klebsiella pneumoniaeEnterococcus faecium

    MeaningAbout Methanobacteriota
    PubMed ↗
31. 
    Microbe Methanobacteriota

    Halococcus dombrowskii NameIn the phylum Methanobacteriota
32. 
    Microbe Methanobacteriota

    Candidatus Methanoperedens NameIn the phylum Methanobacteriota
33. Research Microbiology spectrum · 2022

    Metabolic Synergy between Human Symbionts Bacteroides and Methanobrevibacter.

    Bacteroides thetaiotaomicron

    MeaningAbout Methanobacteriota
    PubMed ↗
34. Research Microorganisms · 2026 Review

    Anaerobutyricum-An Emerging Butyrate-Producing Genus with Potential Relevance to Host Health.

    Anaerobutyricum halliiAnaerobutyricum soehngenii

    MeaningAbout Methanobacteriota
    PubMed ↗
35. 
    Microbe Thermoplasmatota

    Methanomethylophilus MeaningAbout Methanobacteriota
    under 1% of healthy people
36. Research Scientific reports · 2023

    A mathematical model of Bacteroides thetaiotaomicron, Methanobrevibacter smithii, and Eubacterium rectale interactions in the human gut.

    Agathobacter rectalisBacteroides thetaiotaomicron

    MeaningAbout Methanobacteriota
    PubMed ↗
37. 
    Microbe Methanobacteriota

    Haloparvum NameIn the phylum Methanobacteriota
38. Research Scientific reports · 2024 Animal study

    Anaerobic flora, Selenomonas ruminis sp. nov., and the bacteriocinogenic Ligilactobacillus salivarius strain MP3 from crossbred-lactating goats.

    Ligilactobacillus salivarius

    MeaningAbout Methanobacteriota
    PubMed ↗
39. Research Microbiology resource announcements · 2019

    Complete Genome Sequence of Phascolarctobacterium faecium JCM 30894, a Succinate-Utilizing Bacterium Isolated from Human Feces.

    Phascolarctobacterium faecium

    MeaningAbout Methanobacteriota
    PubMed ↗
40. Research Cell metabolism · 2026

    Microbial aldehyde-alcohol dehydrogenase degrades metformin to limit therapeutic response in type 2 diabetes.

    Anaerobutyricum hallii

    MeaningAbout Methanobacteriota
    PubMed ↗

Research: PubMed, U.S. National Library of Medicine · citations link to PubMed