Ontology
VTO
Vertebrate Taxonomy Ontology
Comprehensive hierarchy of extinct and extant vertebrate taxa.
Source & access
Homepagegithub.com
DownloadCanonical file / PURL
Browse in OLSEMBL-EBI Ontology Lookup ServiceBrowse in BioPortalNCBO BioPortalBrowse in OBO FoundryOBO Foundry registry
- homepage github.com HTTP 200
- repository github.com HTTP 200
- download purl.obolibrary.org HTTP 200
Portals & registries
| Source | ID | Version | Classes | Properties | Individuals | Loaded |
|---|---|---|---|---|---|---|
| OLS (EMBL-EBI) | vto | 2020-11-13 | 107,254 | 27 | 0 | 25 Oct 2026 |
| OBO Dashboard | vto | 2020-11-13 | 107,254 | — | — | 11 Dec 2025 |
Ontology IRI http://purl.obolibrary.org/obo/vto.owl
Version IRI http://purl.obolibrary.org/obo/vto/2020-11-13/vto.owl
Languages en
- Logical consistency
- consistent · 0 unsatisfiable
- OWL 2 DL
- yes
- ROBOT report
- 0 errors · 107,017 warnings · 7 info
- OBO principles
- FP01FP02FP03FP04FP05FP06FP07FP08FP09FP11FP12FP16FP20
- Axioms
- 869,223 · 0.08% entities reused
Also registered as
aberowl: VTO bioportal: VTO fairsharing: FAIRsharing.akmeb9 obofoundry: vto ols: vto ontobee: VTO tib.ts: vto wikidata.entity: Q81661832
Automated evaluation
F Findable FAIR12/12
- Persistent identifier (F1)purl.obolibrary.org+4
- Indexed in services (F4)5: OLS, BioPortal, OBO Foundry, Bioregistry, FAIRsharing+5
- Citable reference (F2)doi:10.1186/2041-1480-4-34+3
A Accessible FAIR12/12
- Homepage reachableHTTP 200+3
- Artefact retrievable over HTTP(S) (A1)download HTTP 200+6
- Metadata persists in a registry (A2)OBO Foundry, Bioregistry+3
I Interoperable FAIR10/12
- Formal machine-readable format (I1)OWL, OBO, RDF+5
- Semantic-web IRIs (I2)OWL, OBO, RDF+3
- References other vocabularies (I3)imports 2: iao, taxrank+2
R Reusable FAIR11/12
- Clear license (R1.1)CC0 1.0+5
- Release provenance (R1.2)2020-11-13 (version IRI in the artefact)+4
- Community standards (R1.3)OBO principles: 10/13 checks pass+2
Q Ontology consistency & quality15/20
- Logical consistencyconsistent, 0 unsatisfiable classes (OBO Dashboard)+10
- OWL 2 DL profilein OWL 2 DL+2
- Upper-ontology alignmentno BFO/COB/DOLCE import found0
- Standard relations (RO)does not import the Relation Ontology0
- ROBOT report: no errors0 errors+2
- ROBOT report: warning density107017 warnings / 107254 classes = 1.000
- Pitfall scan: no critical pitfallsno pitfall scan yet; ROBOT report has 0 errors+1
M Maintenance0/16
- Recency2020-11-13 → 71.4 months (older / unknown)0
- Release cadence (12 months)0 releases (OLS version IRI)0
U Community adoption3/16
- Documented adopting projects1 project+2
- Reused by other ontologies00
- Community signalmax(stars 2 → 0, citations 36 → 1)+1
P Penalties (inactivity & inconsistency)-20
- Time since last activity5.9 years → 4 × max(0, 5.9 − 1) (capped)-20
- Inactive statusnot archived, legacy or inactive0
- Consistencyconsistent, no unsatisfiable classes0
FAIR subtotal 45/48 · earned 63/100 − 20 inactivity = 43/100 → grade D
Community adoption 1
- phenoscape.org
Phenoscape uses VTO to annotate systematics data
Source: OBO Foundry registry
Know a project that uses VTO? Suggest it.
History & changes 1 run
History starts with the first archived run; changes appear after the next evaluation.
| Run | Score | FAIR | Version evaluated | Terms | Snapshot |
|---|---|---|---|---|---|
| 26 Oct 2026, 03:31 UTC | 43 D | 45 | 2020-11-13 | 107,254 | JSON |
Provenance
Every fact on this page was fetched automatically. Each row shows where it came from and when. If a source fails, the last good value is kept and marked “carried forward”.
| Fact | Source | Retrieved |
|---|---|---|
| Homepage link check (HTTP 200) | github.com | 26 Oct 2026, 03:29 UTC |
| Repository link check (HTTP 200) | github.com | 26 Oct 2026, 03:29 UTC |
| Download link check (HTTP 200) | purl.obolibrary.org | 26 Oct 2026, 03:29 UTC |
| Artefact header (version IRI) | vertebrate-taxonomy-ontology.s3-website-us-west-2.amazonaws.com | 26 Oct 2026, 03:29 UTC |
| Git refs (commit 6dccad7) | github.com | 26 Oct 2026, 03:29 UTC |
| GitHub repository statistics | api.github.com | 26 Oct 2026, 03:29 UTC |
| OLS classes, imports, version & release | ebi.ac.uk | 26 Oct 2026, 03:29 UTC |
| OBO Foundry status, license & usages | obofoundry.org | 26 Oct 2026, 02:37 UTC |
| Bioregistry mappings, dependencies & reuse | bioregistry.io | 26 Oct 2026, 03:29 UTC |
| OBO Dashboard (checked 11 Dec 2025) | dashboard.obofoundry.org | 26 Oct 2026, 02:37 UTC |
| Crossref citations (doi:10.1186/2041-1480-4-34) | api.crossref.org | 26 Oct 2026, 03:24 UTC |
Run 2026-10-26T02-37-38Z · evaluator v2.0.0 · rubric v3.4 · entry.json · run snapshot
How to cite
- The vertebrate taxonomy ontology: a framework for reasoning across model organism and species phenotypes (2013) · doi:10.1186/2041-1480-4-34 · 36 citations