{
  "schema": "omnisaura.snapshot/v3",
  "uid": "omnisaura:profile:yangchuanosaurus",
  "genus": "Yangchuanosaurus",
  "data_as_of": "2026-10-11",
  "raw_run": "2026-10-11_2",
  "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"
        }
      ]
    },
    "diet": {
      "value": "carnivore",
      "rule": "PBDB, inferred from a group the genus belongs to",
      "rule_id": "merge:inferred_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "life_habit": {
      "value": "ground dwelling, solitary",
      "rule": "PBDB, inferred from a group the genus belongs to",
      "rule_id": "merge:inferred_pbdb",
      "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."
      ]
    },
    "diet": {
      "level": "medium",
      "basis": "single_source",
      "reasons": [
        "Only PBDB gives this, and it infers it for the whole of Theropoda, the group this genus belongs to, not from this genus's own fossils."
      ],
      "source": "PBDB"
    },
    "life_habit": {
      "level": "low",
      "basis": "thin",
      "reasons": [
        "PBDB infers this way of life for the whole of Theropoda; behaviour is rarely known for one genus."
      ]
    },
    "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"
      },
      {
        "field": "diet",
        "label": "Diet",
        "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": 783,
        "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": 4250,
        "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": 4251,
        "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": 4252,
        "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": 4253,
        "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": 4254,
        "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",
  "identifiers": [
    {
      "scheme": "pbdb",
      "name": "Paleobiology Database",
      "id": "38594",
      "url": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38594"
    },
    {
      "scheme": "enwiki",
      "name": "Wikipedia (English)",
      "id": "Yangchuanosaurus",
      "url": "https://en.wikipedia.org/wiki/Yangchuanosaurus"
    },
    {
      "scheme": "gbif",
      "name": "GBIF",
      "id": "4822609",
      "url": "https://www.gbif.org/species/4822609"
    },
    {
      "scheme": "wikidata",
      "name": "Wikidata",
      "id": "Q131131",
      "url": "https://www.wikidata.org/wiki/Q131131"
    }
  ],
  "other_names": {
    "species": [
      "Yangchuanosaurus magnus",
      "Yangchuanosaurus shangyouensis"
    ],
    "synonyms": []
  },
  "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- Diet, inferred by PBDB for the group: carnivore (medium confidence: only PBDB gives this, and it infers it for the whole of Theropoda, the group this genus belongs to, not from this genus's own fossils).\n- Way of life, inferred by PBDB for the group: ground dwelling, solitary (low confidence: PBDB infers this way of life for the whole of Theropoda; behaviour is rarely known for one genus).\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: size, weight, appearance, or behaviour beyond the way of life PBDB infers for the group. 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)."
}