1. 
   Microbe Thermoplasmatota

   Methanomassiliicoccus NameName close to Methanomassiliicoccaceae
   under 1% of healthy people
2. 
   Microbe Thermoplasmatota

   Methanomassiliicoccaceae archaeon DOK NameMethanomassiliicoccaceae archaeon DOK
   under 1% of healthy people
3. 
   Microbe Thermoplasmatota

   Candidatus Methanomassiliicoccus intestinalis NameName close to Methanomassiliicoccaceae
   under 1% of healthy people
4. 
   Microbe Thermoplasmatota

   Methanomassiliicoccus luminyensis NameName close to Methanomassiliicoccaceae
5. 
   Microbe Thermoplasmatota

   Candidatus Methanogranum NameIn the family Methanomassiliicoccaceae
6. 
   Microbe Methanobacteriota

   Methanosphaera MeaningAbout Methanomassiliicoccaceae
   1.8% of healthy people
7. 
   Microbe Thermoplasmatota

   Methanomethylophilus MeaningAbout Methanomassiliicoccaceae
   under 1% of healthy people
8. 
   Microbe Bacillota

   Clostridiaceae bacterium AF18-31LB Unnamed strain MeaningAbout Methanomassiliicoccaceae
   55% of healthy people
9. 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 Methanomassiliicoccaceae
   PubMed ↗
10. 
    Microbe Bacillota

    Clostridiaceae bacterium Marseille-Q3526 Unnamed strain MeaningAbout Methanomassiliicoccaceae
    13% of healthy people
11. Research Access microbiology · 2023

    Ruminococcus gnavus bacteraemia showing morphological diversity on Gram staining: a case report and literature review.

    Mediterraneibacter gnavus

    MeaningAbout Methanomassiliicoccaceae
    PubMed ↗
12. 
    Microbe Bacillota

    Clostridiaceae bacterium Marseille-Q4143 Unnamed strain MeaningAbout Methanomassiliicoccaceae
    43% of healthy people
13. 
    Microbe Bacillota

    Ruminococcus sp. AF13-28 Unnamed strain MeaningAbout Methanomassiliicoccaceae
    18% of healthy people
14. 
    Microbe Methanobacteriota

    Methanosarcina MeaningAbout Methanomassiliicoccaceae
    under 1% of healthy people
15. 
    Microbe Methanobacteriota

    Methanothrix MeaningAbout Methanomassiliicoccaceae
16. 
    Microbe Actinomycetota

    Senegalimassilia MeaningAbout Methanomassiliicoccaceae
    20% of healthy people
17. Research Anaerobe · 2023 Review

    Ruminococcus gnavus bacteremia: Literature review and a case report associated with acute flare of ulcerative colitis in an immunocompromised patient.

    Mediterraneibacter gnavus

    MeaningAbout Methanomassiliicoccaceae
    PubMed ↗
18. Research Acta clinica Belgica · 2018

    Ruminococcus gnavus bacteremia, an uncommon presentation of a common member of the human gut microbiota: case report and literature review.

    Mediterraneibacter gnavus

    MeaningAbout Methanomassiliicoccaceae
    PubMed ↗
19. 
    Microbe Bacillota

    Ruminococcaceae bacterium Marseille-P2935 Unnamed strain MeaningAbout Methanomassiliicoccaceae
    under 1% of healthy people
20. 
    Microbe Bacillota

    Eubacteriaceae bacterium CHKCI004 Unnamed strain MeaningAbout Methanomassiliicoccaceae
    1.8% of healthy people
21. 
    Microbe Bacillota

    Clostridiaceae bacterium Unnamed strain MeaningAbout Methanomassiliicoccaceae
    74% of healthy people
22. 
    Microbe Bacillota

    Clostridiaceae bacterium Marseille-Q4145 Unnamed strain MeaningAbout Methanomassiliicoccaceae
    24% of healthy people
23. Research Antonie van Leeuwenhoek · 2018

    Description of Mediterraneibacter massiliensis, gen. nov., sp. nov., a new genus isolated from the gut microbiota of an obese patient and reclassification of Ruminococcus faecis, Ruminococcus lactaris, Ruminococcus torques, Ruminococcus gnavus and Clostridium glycyrrhizinilyticum as Mediterraneibacter faecis comb. nov., Mediterraneibacter lactaris comb. nov., Mediterraneibacter torques comb. nov., Mediterraneibacter gnavus comb. nov. and Mediterraneibacter glycyrrhizinilyticus comb. nov.

    Mediterraneibacter gnavus[Ruminococcus] torquesMediterraneibacter faecis

    MeaningAbout Methanomassiliicoccaceae
    PubMed ↗
24. 
    Microbe Methanobacteriota

    Methanobacterium MeaningAbout Methanomassiliicoccaceae
    under 1% of healthy people
25. 
    Microbe Bacillota

    Clostridiaceae bacterium Marseille-Q4149 Unnamed strain MeaningAbout Methanomassiliicoccaceae
    26% of healthy people
26. 
    Microbe Methanobacteriota

    Methanobacteriaceae MeaningAbout Methanomassiliicoccaceae
27. Research International journal of systematic and evolutionary microbiology · 2021

    Sporofaciens musculi gen. nov., sp. nov., a novel bacterium isolated from the caecum of an obese mouse.

    Dorea longicatenaMediterraneibacter gnavusDorea formicigenerans

    MeaningAbout Methanomassiliicoccaceae
    PubMed ↗
28. 
    Microbe Methanobacteriota

    Methanocorpusculum MeaningAbout Methanomassiliicoccaceae
29. 
    Microbe Bacillota

    Roseburia faecis MeaningAbout Methanomassiliicoccaceae
    68% of healthy people
30. Research EBioMedicine · 2019

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

    Klebsiella pneumoniaeEnterococcus faecium

    MeaningAbout Methanomassiliicoccaceae
    PubMed ↗
31. 
    Microbe Thermoplasmatota

    Candidatus Methanomethylophilus sp. 1R26 Unnamed strain MeaningAbout Methanomassiliicoccaceae
    under 1% of healthy people
32. Research Heliyon · 2023

    A case of bloodstream infection caused by Ruminococcus gnavus without gastrointestinal involvement.

    Mediterraneibacter gnavus

    MeaningAbout Methanomassiliicoccaceae
    PubMed ↗
33. Research Antonie van Leeuwenhoek · 2018

    Correction to: Description of Mediterraneibacter massiliensis, gen. nov., sp. nov., a new genus isolated from the gut microbiota of an obese patient and reclassification of Ruminococcus faecis, Ruminococcus lactaris, Ruminococcus torques, Ruminococcus gnavus and Clostridium glycyrrhizinilyticum as Mediterraneibacter faecis comb. nov., Mediterraneibacter lactaris comb. nov., Mediterraneibacter torques comb. nov., Mediterraneibacter gnavus comb. nov. and Mediterraneibacter glycyrrhizinilyticus comb. nov.

    Mediterraneibacter gnavus[Ruminococcus] torquesMediterraneibacter faecis

    MeaningAbout Methanomassiliicoccaceae
    PubMed ↗
34. Research Gut microbes · 2026 Randomized trial

    Gut microbiota and metabolic alterations in participants with flatulence identify Faecalibacterium prausnitzii as a key microbial target for clinical intervention.

    Faecalibacterium prausnitziiBifidobacterium longum

    MeaningAbout Methanomassiliicoccaceae
    PubMed ↗
35. 
    Microbe Methanobacteriota

    Methanosphaera cuniculi MeaningAbout Methanomassiliicoccaceae
    under 1% of healthy people
36. 
    Microbe Methanobacteriota

    Methanobrevibacter MeaningAbout Methanomassiliicoccaceae
    18% of healthy people
37. 
    Microbe Methanobacteriota

    Methanothrix soehngenii MeaningAbout Methanomassiliicoccaceae
38. Research mBio · 2020

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

    Bacteroides thetaiotaomicron

    MeaningAbout Methanomassiliicoccaceae
    PubMed ↗
39. 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 Methanomassiliicoccaceae
    PubMed ↗
40. 
    Microbe Bacillota

    Ruminococcaceae bacterium AM28-23LB Unnamed strain MeaningAbout Methanomassiliicoccaceae

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