NCBI
NCBI Taxonomy taxdump · 2026-10-23taxid: 818
Bacteria > Bacteroidota > Bacteroidia > Bacteroidales > Bacteroidaceae > Bacteroides > Bacteroides thetaiotaomicron
Bacteroides thetaiotaomicron
Species in genus Bacteroides, family Bacteroidaceae (order Bacteroidales). (from NCBI Taxonomy lineage)
Names over time
Loading the names
Cross-database view
GTDB
Bacteroides thetaiotaomicron
id: s__Bacteroides thetaiotaomicron · GTDB R232
At its weakest, linked by GTDB's own NCBI species id rather than the genome's raw one.
d__Bacteria;p__Bacteroidota;c__Bacteroidia;o__Bacteroidales;f__Bacteroidaceae;g__Bacteroides;s__Bacteroides thetaiotaomicron
SILVA
Bacteroides thetaiotaomicron
id: JN084201 · SILVA 138.2
Linked by name — the SILVA table we ingest carries no NCBI taxid, so the binomial is the only join.
Bacteria;Bacteroidota;Bacteroidia;Bacteroidales;Bacteroidaceae;Bacteroides;
Greengenes2
Bacteroides_H_857956 thetaiotaomicron
id: Bacteroides_H_857956 thetaiotaomicron · Greengenes2 2024.09
Linked via GTDB R220 genome accessions — the same physical genomes, not a name match.
d__Bacteria; p__Bacteroidota; c__Bacteroidia; o__Bacteroidales; f__Bacteroidaceae; g__Bacteroides_H_857956; s__Bacteroides_H_857956 thetaiotaomicron
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 | Bacteroidota | Bacteroidota | Bacteroidota | Bacteroidota |
| class | Bacteroidia | Bacteroidia | Bacteroidia | Bacteroidia |
| order | Bacteroidales | Bacteroidales | Bacteroidales | Bacteroidales |
| family | Bacteroidaceae | Bacteroidaceae | Bacteroidaceae | Bacteroidaceae |
| genus | Bacteroides | Bacteroides | Bacteroides | first rank that differs from NCBI: Bacteroides_H_857956 |
| species | Bacteroides thetaiotaomicron | Bacteroides thetaiotaomicron | — | Bacteroides_H_857956 thetaiotaomicron |
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- Bacteroides thetaiotaomicroncurrent
- Bacillus thetaiotaomicronsynonym
- Bacteroides fragilis subsp. thetaiotaomicronsynonym
- Pseudobacterium thetaiotaomicronsynonym
- Sphaerocillus thetaiotaomicronsynonym
Other names in these databases
GTDB R232
- Bacteroides thetaiotaomicron
- Bacteroides sp947646015
- Bacteroides ovatus
- Bacteroides thetaiotaomicron_A
- Bacteroides faecis
- Bacteroides sp900755095
- Hungatella_A sp034142505
- Oribacterium sp963650995
- Oscillibacter segnis
- Oscillibacter welbionis
- RUG420 sp963638085
- UBA6382 sp963634195
SILVA 138.2
- Bacteroides thetaiotaomicron
- Bacteroides thetaiotaomicron VPI-5482
- Bacteroides thetaiotaomicron dnLKV9