{ "schema": "omnisaura.snapshot/v2", "uid": "omnisaura:profile:yangchuanosaurus", "genus": "Yangchuanosaurus", "generated_at": "2026-10-12T10:16:43Z", "raw_run": "2026-10-12", "profile": { "name": { "value": "Yangchuanosaurus", "rule": "PBDB leads", "rule_id": "merge:lead_pbdb", "synthesis": false, "sources": [ { "source": "pbdb", "license": "CC-BY-4.0" } ] }, "authority": { "value": "Dong et al. 1978", "rule": "PBDB leads", "rule_id": "merge:lead_pbdb", "synthesis": false, "sources": [ { "source": "pbdb", "license": "CC-BY-4.0" } ] }, "type_species": { "value": null, "rule": null, "rule_id": null, "synthesis": false, "sources": [] }, "order": { "value": null, "rule": null, "rule_id": null, "synthesis": false, "sources": [] }, "family": { "value": "Metriacanthosauridae", "rule": "PBDB leads", "rule_id": "merge:lead_pbdb", "synthesis": false, "sources": [ { "source": "pbdb", "license": "CC-BY-4.0" } ] }, "parent_name": { "value": "Metriacanthosauridae", "rule": "PBDB leads", "rule_id": "merge:lead_pbdb", "synthesis": false, "sources": [ { "source": "pbdb", "license": "CC-BY-4.0" } ] }, "headline": { "value": [ 170.9, 113.2, "Bajocian", "Aptian" ], "rule": "PBDB leads", "rule_id": "merge:lead_pbdb", "synthesis": false, "sources": [ { "source": "pbdb", "license": "CC-BY-4.0" } ] }, "evidence": { "value": [ 170.9, 154.8 ], "rule": "Omnisaura synthesis: span of confirmed PBDB records", "rule_id": "merge:omnisaura_synthesis_confirmed_occurrences", "synthesis": true, "sources": [ { "source": "pbdb", "license": "CC-BY-4.0" } ] }, "countries": { "value": [ "CN" ], "rule": "Union of all sources (ISO 3166)", "rule_id": "merge:union_iso3166", "synthesis": false, "sources": [ { "source": "pbdb", "license": "CC-BY-4.0" } ] }, "formations": { "value": [ "Shaximiao", "Suining" ], "rule": "Canonical names, automatic and editor-approved matches applied", "rule_id": "merge:canonical_formations", "synthesis": false, "sources": [ { "source": "pbdb", "license": "CC-BY-4.0" } ] }, "common_names": { "value": null, "rule": null, "rule_id": null, "synthesis": false, "sources": [] }, "named_after": { "value": null, "rule": null, "rule_id": null, "synthesis": false, "sources": [] } }, "confidence": { "name": { "level": "high", "basis": "corroborated", "reasons": [ "PBDB and Wikidata identify the same genus." ] }, "authority": { "level": "medium", "basis": "single_source", "reasons": [ "Only PBDB gives this; nothing contradicts it." ], "source": "PBDB" }, "parent_name": { "level": "medium", "basis": "single_source", "reasons": [ "Only PBDB gives this; nothing contradicts it." ], "source": "PBDB" }, "family": { "level": "medium", "basis": "single_source", "reasons": [ "Only PBDB gives this; nothing contradicts it." ], "source": "PBDB" }, "headline": { "level": "medium", "basis": "single_source", "reasons": [ "Only PBDB gives this; nothing contradicts it." ], "source": "PBDB" }, "evidence": { "level": "medium", "basis": "synthesis", "reasons": [ "Omnisaura's calculation from 3 confirmed PBDB records.", "1 record(s) identified only to genus, dated well outside the species-level records, were set aside as doubtful." ] }, "countries": { "level": "medium", "basis": "items", "reasons": [ "See each entry." ], "items": [ { "value": "CN", "level": "medium", "basis": "single_source", "reasons": [ "Only PBDB records it (4 records)." ], "source": "PBDB" } ] }, "formations": { "level": "mixed", "basis": "items", "reasons": [ "Entries differ; see each entry." ], "items": [ { "value": "Shaximiao", "level": "medium", "basis": "single_source", "reasons": [ "Only PBDB records it (3 records)." ], "source": "PBDB" }, { "value": "Suining", "level": "low", "basis": "thin", "reasons": [ "Only one PBDB record." ] } ] } }, "gaps": { "missing": [ { "field": "type_species", "label": "Type species", "note": "No source we use gives this yet." }, { "field": "order", "label": "Order", "note": "No source we use gives this yet." }, { "field": "common_names", "label": "Common names", "note": "No source we use gives this yet." }, { "field": "named_after", "label": "Named after", "note": "No source we use gives this yet." } ], "single_source": [ { "field": "authority", "label": "Authority", "source": "PBDB" }, { "field": "parent_name", "label": "Parent group", "source": "PBDB" }, { "field": "family", "label": "Family", "source": "PBDB" }, { "field": "headline", "label": "Age (headline)", "source": "PBDB" } ], "disputed": [], "withheld": [] }, "assessment": { "levels": { "high": "Two independent sources agree, or an editor has ruled.", "medium": "One source; nothing contradicts it.", "low": "Sources disagree and no editor has ruled yet, or too few records." }, "by": "Omnisaura", "license_id": "OMNISAURA-EDITORIAL" }, "formation_matches": [], "credits": { "genus": "Yangchuanosaurus", "scope": "confirmed matches only", "data_sources": [ { "values": 781, "retrieved": [ "2026-10-04", "2026-10-05", "2026-10-10", "2026-10-11" ], "source": "pbdb", "license_id": "CC-BY-4.0", "license_name": "Creative Commons Attribution 4.0", "license_url": "https://creativecommons.org/licenses/by/4.0/", "requires_attribution": true, "attribution": "Data from the Paleobiology Database (https://paleobiodb.org), licensed CC BY 4.0.", "source_name": "Paleobiology Database", "homepage": "https://paleobiodb.org" }, { "values": 23, "retrieved": [ "2026-10-11" ], "source": "wikidata", "license_id": "CC0-1.0", "license_name": "Creative Commons Zero 1.0 (public domain dedication)", "license_url": "https://creativecommons.org/publicdomain/zero/1.0/", "requires_attribution": false, "attribution": "Data from Wikidata (https://www.wikidata.org), CC0 1.0.", "source_name": "Wikidata", "homepage": "https://www.wikidata.org" } ], "images": [ { "media_id": 4277, "title": "File:Yanchuanosaurus1.jpg", "category": "Taxon image", "url": "https://upload.wikimedia.org/wikipedia/commons/9/9f/Yanchuanosaurus1.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original", "page_url": "https://commons.wikimedia.org/wiki/File:Yanchuanosaurus1.jpg", "source": "commons", "rights_holder": "Creator:Dmitry Bogdanov", "catalog_number": null, "license_id": "CC-BY-3.0", "license_name": "Creative Commons Attribution 3.0", "license_url": "https://creativecommons.org/licenses/by/3.0/", "requires_attribution": true, "share_alike": false, "attribution": "Creator:Dmitry Bogdanov (dmitrchel@mail.ru), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Yanchuanosaurus1.jpg)" }, { "media_id": 4278, "title": "File:Yangchuanosaurus NT (flipped).jpg", "category": "Taxon image", "url": "https://upload.wikimedia.org/wikipedia/commons/5/59/Yangchuanosaurus_NT_%28flipped%29.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original", "page_url": "https://commons.wikimedia.org/wiki/File:Yangchuanosaurus_NT_(flipped).jpg", "source": "commons", "rights_holder": "Nobu Tamura email:nobu.tamura@yahoo.com https://spinops.blogspot.com/", "catalog_number": null, "license_id": "CC-BY-SA-4.0", "license_name": "Creative Commons Attribution-ShareAlike 4.0", "license_url": "https://creativecommons.org/licenses/by-sa/4.0/", "requires_attribution": true, "share_alike": true, "attribution": "Nobu Tamura email:nobu.tamura@yahoo.com https://spinops.blogspot.com/, via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Yangchuanosaurus_NT_(flipped).jpg)" }, { "media_id": 4279, "title": "File:Yangchuanosaurus hepingensis skull cast.jpg", "category": "Taxon image", "url": "https://upload.wikimedia.org/wikipedia/commons/2/2f/Yangchuanosaurus_hepingensis_skull_cast.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original", "page_url": "https://commons.wikimedia.org/wiki/File:Yangchuanosaurus_hepingensis_skull_cast.jpg", "source": "commons", "rights_holder": "David Stanley", "catalog_number": null, "license_id": "CC-BY-2.0", "license_name": "Creative Commons Attribution 2.0", "license_url": "https://creativecommons.org/licenses/by/2.0/", "requires_attribution": true, "share_alike": false, "attribution": "David Stanley (https://www.flickr.com/photos/davidstanleytravel/46865552041/), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Yangchuanosaurus_hepingensis_skull_cast.jpg)" }, { "media_id": 4280, "title": "File:Yangchuanosaurus shangyouensis.JPG", "category": "Taxon image", "url": "https://upload.wikimedia.org/wikipedia/commons/9/95/Yangchuanosaurus_shangyouensis.JPG?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original", "page_url": "https://commons.wikimedia.org/wiki/File:Yangchuanosaurus_shangyouensis.JPG", "source": "commons", "rights_holder": "Laikayiu", "catalog_number": null, "license_id": "CC-BY-SA-3.0", "license_name": "Creative Commons Attribution-ShareAlike 3.0", "license_url": "https://creativecommons.org/licenses/by-sa/3.0/", "requires_attribution": true, "share_alike": true, "attribution": "Laikayiu (Own work), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Yangchuanosaurus_shangyouensis.JPG)" }, { "media_id": 4281, "title": "File:Yangchuanosaurus zigongensis.jpg", "category": "Taxon image", "url": "https://upload.wikimedia.org/wikipedia/commons/1/18/Yangchuanosaurus_zigongensis.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original", "page_url": "https://commons.wikimedia.org/wiki/File:Yangchuanosaurus_zigongensis.jpg", "source": "commons", "rights_holder": "Jim, the Photographer from Springfield PA, United States of America", "catalog_number": null, "license_id": "CC-BY-2.0", "license_name": "Creative Commons Attribution 2.0", "license_url": "https://creativecommons.org/licenses/by/2.0/", "requires_attribution": true, "share_alike": false, "attribution": "Jim, the Photographer from Springfield PA, United States of America (Dinosaur Uploaded by FunkMonk), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Yangchuanosaurus_zigongensis.jpg)" } ], "derived_ages": null, "references": 37 }, "credits_markdown": "## Yangchuanosaurus: Sources & credits\n\n_Scope: confirmed matches only._\n\n### Data\n- **Paleobiology Database** (https://paleobiodb.org): [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/). Data from the Paleobiology Database (https://paleobiodb.org), licensed CC BY 4.0. Retrieved 4 October 2026, 5 October 2026, 10 October 2026, 11 October 2026.\n- **Wikidata** (https://www.wikidata.org): [Creative Commons Zero 1.0 (public domain dedication)](https://creativecommons.org/publicdomain/zero/1.0/). Data from Wikidata (https://www.wikidata.org), CC0 1.0. Retrieved 11 October 2026. _Credited as a courtesy: this licence doesn't require attribution._\n\n### Images (5)\n- “File:Yanchuanosaurus1.jpg” (Taxon image): Creator:Dmitry Bogdanov (dmitrchel@mail.ru), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Yanchuanosaurus1.jpg). [Creative Commons Attribution 3.0](https://creativecommons.org/licenses/by/3.0/).\n- “File:Yangchuanosaurus NT (flipped).jpg” (Taxon image): Nobu Tamura email:nobu.tamura@yahoo.com https://spinops.blogspot.com/, via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Yangchuanosaurus_NT_(flipped).jpg). [Creative Commons Attribution-ShareAlike 4.0](https://creativecommons.org/licenses/by-sa/4.0/). Shown unmodified (share-alike licence).\n- “File:Yangchuanosaurus hepingensis skull cast.jpg” (Taxon image): David Stanley (https://www.flickr.com/photos/davidstanleytravel/46865552041/), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Yangchuanosaurus_hepingensis_skull_cast.jpg). [Creative Commons Attribution 2.0](https://creativecommons.org/licenses/by/2.0/).\n- “File:Yangchuanosaurus shangyouensis.JPG” (Taxon image): Laikayiu (Own work), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Yangchuanosaurus_shangyouensis.JPG). [Creative Commons Attribution-ShareAlike 3.0](https://creativecommons.org/licenses/by-sa/3.0/). Shown unmodified (share-alike licence).\n- “File:Yangchuanosaurus zigongensis.jpg” (Taxon image): Jim, the Photographer from Springfield PA, United States of America (Dinosaur Uploaded by FunkMonk), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Yangchuanosaurus_zigongensis.jpg). [Creative Commons Attribution 2.0](https://creativecommons.org/licenses/by/2.0/).\n\n### Scientific references\n\n37 published reference(s) support this entry (via the Paleobiology Database).\n", "notice": "Omnisaura data combines sources under different licences. Every genus file lists its credits; anyone showing a value must show the credits for it. Images keep their own licences; share-alike images may only be shown unmodified.", "fossil_basis": "body", "original_description": { "citation": "Z. Dong, Y. Zhang, X. Li, S. Zhou (1978). [A new carnosaur from Yongchuan County, Sichuan Province]. Ke Xue Tong Bao [Science Newsletter] 23(5): 302–304.", "authors": "Z. Dong, Y. Zhang, X. Li, S. Zhou", "year": 1978, "title": "[A new carnosaur from Yongchuan County, Sichuan Province]", "publication": "Ke Xue Tong Bao [Science Newsletter]", "volume": "23", "issue": "5", "pages": "302–304", "doi": null, "url": null, "what": "The publication the Paleobiology Database gives as the authority for this genus name, usually the one that first named and described it.", "confidence": { "level": "medium", "reasons": [ "Only PBDB gives this; its author and year match the naming authority (Dong et al. 1978)." ] }, "source": "pbdb", "source_name": "Paleobiology Database", "license_id": "CC-BY-4.0", "pbdb_reference_no": "29352" }, "summary": "Omnisaura summary: Yangchuanosaurus, Dong et al. 1978\n\n- Named by: Dong et al. 1978 (medium confidence: only PBDB gives this; nothing contradicts it).\n- Family: Metriacanthosauridae (medium confidence: only PBDB gives this; nothing contradicts it).\n- Parent group: Metriacanthosauridae (medium confidence: only PBDB gives this; nothing contradicts it).\n- Age, as published by the Paleobiology Database: Bajocian to Aptian, 170.9–113.2 million years ago (medium confidence: only PBDB gives this; nothing contradicts it).\n- Age, Omnisaura's own calculation (not a published figure): 170.9–154.8 million years ago (medium confidence: Omnisaura's calculation from 3 confirmed PBDB records).\n- Fossils found in: China (medium: only PBDB records it (4 records)).\n- Rock formations: Shaximiao (medium: only PBDB records it (3 records)); Suining (low: only one PBDB record).\n- Original description: Z. Dong, Y. Zhang, X. Li, S. Zhou (1978). [A new carnosaur from Yongchuan County, Sichuan Province]. Ke Xue Tong Bao [Science Newsletter] 23(5): 302–304. (medium confidence: only PBDB gives this; its author and year match the naming authority (Dong et al. 1978)).\n\nNot known or disputed:\n- Type species: no source Omnisaura uses gives this.\n- Order: no source Omnisaura uses gives this.\n- Common names: no source Omnisaura uses gives this.\n- Named after: no source Omnisaura uses gives this.\n\nNot covered by Omnisaura: diet, size, weight, appearance or behaviour. Do not fill these in from general knowledge as if they came from Omnisaura.\n\nCredits (must be shown with any of this): Paleobiology Database (CC-BY-4.0); Wikidata (CC0-1.0)." }