NCBI
NCBI Taxonomy taxdump · 2026-10-23taxid: 853
Bacteria > Bacillota > Clostridia > Eubacteriales > Oscillospiraceae > Faecalibacterium > Faecalibacterium prausnitzii
Faecalibacterium prausnitzii
Species in genus Faecalibacterium, family Oscillospiraceae (order Eubacteriales). (from NCBI Taxonomy lineage)
Warning: This taxon splits 1→many across databases. Read the panels carefully.
Names over time
Loading the names
Cross-database view
GTDB
- Faecalibacterium longum
- Faecalibacterium prausnitzii
- Faecalibacterium taiwanense
- +54 more — see all names below
id: s__Faecalibacterium longum / s__Faecalibacterium prausnitzii / s__Faecalibacterium taiwanense · GTDB R232
At its weakest, linked by GTDB's own NCBI species id rather than the genome's raw one.
d__Bacteria;p__Bacillota;c__Clostridia;o__Oscillospirales;f__Ruminococcaceae;g__Faecalibacterium;s__Faecalibacterium longum
Warning: GTDB R232 places this taxon's 948 genomes in 5 species.
Name differs between releases: Name differs across GTDB releases.
SILVA
Faecalibacterium prausnitzii
id: AJ270469 · SILVA 138.2
Linked by name — the SILVA table we ingest carries no NCBI taxid, so the binomial is the only join.
Bacteria;Bacillota;Clostridia;Oscillospirales;Ruminococcaceae;Faecalibacterium;
Greengenes2
Faecalibacterium duncaniae
id: Faecalibacterium duncaniae (+3) · Greengenes2 2024.09
Linked via GTDB R220 genome accessions — the same physical genomes, not a name match.
d__Bacteria; p__Bacillota_A_368345; c__Clostridia_258483; o__Oscillospirales; f__Ruminococcaceae; g__Faecalibacterium; s__Faecalibacterium duncaniae
Name differs between releases: Name differs across Greengenes2 releases.
eHOMD
release 4.2No record in eHOMD 4.2.
Each panel shows one release. Switch a release to see how that database's answer changes — the taxon is held fixed by NCBI taxid, so every panel describes the same organism. Each panel also says how it was linked; how the databases are joined explains the routes.
Lineage by rank
| rank | NCBI | GTDB R232 | SILVA 138.2 | Greengenes2 2024.09 |
|---|---|---|---|---|
| domain | Bacteria | Bacteria | Bacteria | Bacteria |
| phylum | Bacillota | Bacillota | Bacillota | first rank that differs from NCBI: Bacillota_A_368345 |
| class | Clostridia | Clostridia | Clostridia | Clostridia_258483 |
| order | Eubacteriales | first rank that differs from NCBI: Oscillospirales | first rank that differs from NCBI: Oscillospirales | Oscillospirales |
| family | Oscillospiraceae | Ruminococcaceae | Ruminococcaceae | Ruminococcaceae |
| genus | Faecalibacterium | Faecalibacterium | Faecalibacterium | Faecalibacterium |
| species | Faecalibacterium prausnitzii | Faecalibacterium longum | — | Faecalibacterium duncaniae |
Each column is the release its box shows. marks the first rank at which a database's name differs from NCBI's, by exact text; a suffix such as _A counts. SILVA's path and eHOMD's columns end at genus, so their species row is blank; the box above names the species. Levels a source labels outside these seven ranks are in the API's ranks and not drawn here.
Names in NCBI
from NCBI Taxonomy taxdump · 2026-10-23- Faecalibacterium prausnitziicurrent
- Bacillus mucosus anaerobiussynonym
- Fusobacterium prausnitzii (Hauduroy et al. 1937) Moore and Holdeman 1970 (Approved Lists 1980)synonym
Other names in these databases
GTDB R232
- Faecalibacterium longum
- Faecalibacterium prausnitzii
- Faecalibacterium taiwanense
- Faecalibacterium duncaniae
- Faecalibacterium prausnitzii_E
- Faecalibacterium prausnitzii_I
- Alistipes_A hominis
- Faecalibacterium hattorii
- Faecalibacterium intestinale
- Faecalibacterium tardum
- Faecalibacterium langellae
- Faecalibacterium wellingii
- Faecalibacterium prausnitzii_M
- Faecalibacterium sp934514285
- Faecalibacterium butyricigenerans
- Faecalibacterium prausnitzii_L
- Faecalibacterium prausnitzii_N
- Faecalibacterium sp003449675
- Faecalibacterium sp900539945
- Faecalibacterium sp905215595
- Ruminococcoides intestinale_A
- Absicoccus sp963654445
- Akkermansia muciniphila
- Alistipes putredinis
- Anaerotardibacter sp963595065
- Bacteroides sp963639425
- Bifidobacterium adolescentis
- CAG-103 sp900757655
- CAG-177 sp003514385
- CAG-177 sp963612725
- Collinsella sp905207425
- Collinsella sp963603165
- Cryptobacteroides sp000433355
- Cryptobacteroides sp000435075
- Faecalibacillus intestinalis
- Faecalibacterium sp900540455
- Faecalibacterium sp900765705
- Hallerella sp963629575
- Hominimerdicola aceti
- Onthovivens sp963626345
- Ornithospirochaeta sp963626925
- Parabacteroides distasonis
- Physcousia sp900543815
- Prevotella sp002299635
- Prevotella sp900543975
- Prevotella sp963611255
- Prevotella sp963620725
- Prevotella stercorea
- SFJ001 sp934513685
- SIG603 sp963611165
- Sutterella wadsworthensis
- UBA1067 sp963616865
- UBA1724 sp963621575
- UBA3789 sp934131175
- UBA4951 sp963611905
- UBA644 sp934454405
- Vescimonas sp900551995
SILVA 138.2
- Faecalibacterium prausnitzii
- Faecalibacterium prausnitzii A2-165
Greengenes2 2024.09
- Faecalibacterium duncaniae
- Lacticaseibacillus casei
- Parabacteroides_B_862066 distasonis
- Streptococcus thermophilus