NCBI
NCBI Taxonomy taxdump · 2026-10-23taxid: 851
Bacteria > Fusobacteriota > Fusobacteriia > Fusobacteriales > Fusobacteriaceae > Fusobacterium > Fusobacterium nucleatum
Fusobacterium nucleatum
Species in genus Fusobacterium, family Fusobacteriaceae (order Fusobacteriales). (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
- Fusobacterium polymorphum
- Fusobacterium vincentii
- Fusobacterium nucleatum
- +7 more — see all names below
id: s__Fusobacterium polymorphum / s__Fusobacterium vincentii / s__Fusobacterium nucleatum · GTDB R232
At its weakest, linked by following NCBI's redirect from a taxid retired since this release.
d__Bacteria;p__Fusobacteriota;c__Fusobacteriia;o__Fusobacteriales;f__Fusobacteriaceae;g__Fusobacterium;s__Fusobacterium polymorphum
Warning: GTDB R232 places this taxon's 200 genomes in 6 species.
Name differs between releases: Name differs across GTDB releases.
SILVA
Fusobacterium nucleatum
id: AF543300 · SILVA 138.2
Linked by name — the SILVA table we ingest carries no NCBI taxid, so the binomial is the only join.
Bacteria;Fusobacteriota;Fusobacteriia;Fusobacteriales;Fusobacteriaceae;Fusobacterium;
Name differs between releases: Name differs across SILVA releases.
Greengenes2
- Fusobacterium_C vincentii
- Fusobacterium_C nucleatum
- Fusobacterium_C animalis
id: Fusobacterium_C vincentii / Fusobacterium_C nucleatum / Fusobacterium_C animalis · Greengenes2 2024.09
Linked via GTDB R220 genome accessions — the same physical genomes, not a name match.
d__Bacteria; p__Fusobacteriota; c__Fusobacteriia; o__Fusobacteriales; f__Fusobacteriaceae; g__Fusobacterium_C; s__Fusobacterium_C vincentii
Warning: Greengenes2 2024.09 places this taxon's 28 genomes in 3 species.
Name differs between releases: Name differs across Greengenes2 releases.
eHOMD
release 4.2Fusobacterium nucleatum_sensu_stricto
id: HMT-698 · eHOMD 4.2
At its weakest, linked by walking up 1 level from a strain or subspecies record to the species.
Bacteria;Fusobacteriota;Fusobacteriia;Fusobacteriales;Fusobacteriaceae;Fusobacterium
Only 2 genomes — below the threshold for detecting a split, so “current” here means unverified, not confirmed.
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 | eHOMD 4.2 |
|---|---|---|---|---|---|
| domain | Bacteria | Bacteria | Bacteria | Bacteria | Bacteria |
| phylum | Fusobacteriota | Fusobacteriota | Fusobacteriota | Fusobacteriota | Fusobacteriota |
| class | Fusobacteriia | Fusobacteriia | Fusobacteriia | Fusobacteriia | Fusobacteriia |
| order | Fusobacteriales | Fusobacteriales | Fusobacteriales | Fusobacteriales | Fusobacteriales |
| family | Fusobacteriaceae | Fusobacteriaceae | Fusobacteriaceae | Fusobacteriaceae | Fusobacteriaceae |
| genus | Fusobacterium | Fusobacterium | Fusobacterium | first rank that differs from NCBI: Fusobacterium_C | Fusobacterium |
| species | Fusobacterium nucleatum | first rank that differs from NCBI: Fusobacterium polymorphum | — | Fusobacterium_C vincentii | — |
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- Fusobacterium nucleatumcurrent
- Corynebacterium fusiformesynonym
- Fusiformis fusiformissynonym
- Fusiformis nucleatussynonym
- Fusobacterium fusiformesynonym
- Fusobacterium nucleatum subsp. fusiformesynonym
- Fusobacterium nucleatum subsp. vincentii (ex Knorr 1922) Dzink et al. 1990synonym
- Fusobacterium plauti-vincentisynonym
- Fusobacterium vincentii (Dzink et al. 1990) Kook et al. 2022synonym
- Fusobacterium vincentiisynonym
- Sphaerophorus fusiformissynonym
- Fusibacterium nucleatumequivalent
- Fusibacterium nucleatum subsp. fusiformeequivalent
- Fusibacterium nucleatum subsp. vincentiiequivalent
Other names in these databases
GTDB R232
- Fusobacterium polymorphum
- Fusobacterium vincentii
- Fusobacterium nucleatum
- Fusobacterium watanabei
- Fusobacterium animalis
- Fusobacterium nucleatum_K
- Capnocytophaga gingivalis
- Fusobacterium nucleatum_D
- Fusobacterium nucleatum_L
- Fusobacterium simiae
SILVA 138.2
- Fusobacterium nucleatum
- Fusobacterium nucleatum subsp. polymorphum
- Fusobacterium nucleatum subsp. animalis
- Fusobacterium nucleatum subsp. vincentii
- Fusobacterium nucleatum subsp. animalis 3_1_33
- Fusobacterium nucleatum subsp. vincentii 3_1_27
- Fusobacterium nucleatum subsp. vincentii 3_1_36A2
- Fusobacterium nucleatum subsp. animalis 7_1
- Fusobacterium nucleatum subsp. nucleatum ATCC 23726
- Fusobacterium nucleatum subsp. animalis 11_3_2
- Fusobacterium nucleatum subsp. animalis 21_1A
- Fusobacterium nucleatum subsp. polymorphum F0401
- Fusobacterium nucleatum subsp. animalis 4_8
- Fusobacterium nucleatum subsp. animalis F0419
- Fusobacterium nucleatum subsp. nucleatum ATCC 25586
- Fusobacterium nucleatum subsp. vincentii ATCC 49256
- Fusobacterium nucleatum 13_3C
- Fusobacterium nucleatum subsp. nucleatum ChDC F316
- Fusobacterium nucleatum subsp. vincentii ChDC F8
- Fusobacterium nucleatum subsp. polymorphum ATCC 10953
- Fusobacterium nucleatum CTI-3
- Fusobacterium nucleatum subsp. fusiforme ATCC 51190
- Fusobacterium nucleatum CC53
- Fusobacterium nucleatum CTI-1
- Fusobacterium nucleatum CTI-2
- Fusobacterium nucleatum CTI-5
- Fusobacterium nucleatum CTI-6
- Fusobacterium nucleatum CTI-7
- Fusobacterium nucleatum E9_12
- Fusobacterium nucleatum W1481
- Fusobacterium nucleatum subsp. animalis ATCC 51191
- Fusobacterium nucleatum subsp. animalis D11
- Fusobacterium nucleatum subsp. vincentii 4_1_13
Greengenes2 2024.09
- Fusobacterium_C vincentii
- Fusobacterium_C nucleatum
- Fusobacterium_C animalis
eHOMD 4.2
- Fusobacterium nucleatum_sensu_stricto
- Fusobacterium vincentii