{
  "schema": "omnisaura.snapshot/v3",
  "uid": "omnisaura:profile:yunnanosaurus",
  "genus": "Yunnanosaurus",
  "data_as_of": "2026-10-11",
  "raw_run": "2026-10-11",
  "profile": {
    "name": {
      "value": "Yunnanosaurus",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "authority": {
      "value": "Young 1940",
      "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": null,
      "rule": null,
      "rule_id": null,
      "synthesis": false,
      "sources": []
    },
    "parent_name": {
      "value": "Sauropodiformes",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "headline": {
      "value": [
        201.4,
        184.2,
        "Hettangian",
        "Pliensbachian"
      ],
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "evidence": {
      "value": [
        201.4,
        184.2
      ],
      "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": [
        "Fengjiahe",
        "Lufeng"
      ],
      "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": null,
      "rule": null,
      "rule_id": null,
      "synthesis": false,
      "sources": []
    },
    "life_habit": {
      "value": null,
      "rule": null,
      "rule_id": null,
      "synthesis": false,
      "sources": []
    },
    "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": "low",
      "basis": "disputed",
      "reasons": [
        "PBDB and Wikidata agree on who named it but give years more than one apart; an editor has not ruled yet."
      ]
    },
    "parent_name": {
      "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 15 confirmed PBDB records."
      ]
    },
    "countries": {
      "level": "medium",
      "basis": "items",
      "reasons": [
        "See each entry."
      ],
      "items": [
        {
          "value": "CN",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (15 records)."
          ],
          "source": "PBDB"
        }
      ]
    },
    "formations": {
      "level": "mixed",
      "basis": "items",
      "reasons": [
        "Entries differ; see each entry."
      ],
      "items": [
        {
          "value": "Fengjiahe",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Lufeng",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (14 records)."
          ],
          "source": "PBDB"
        }
      ]
    }
  },
  "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": "family",
        "label": "Family",
        "note": "No source we use gives this yet."
      },
      {
        "field": "diet",
        "label": "Diet",
        "note": "No source we use gives this yet."
      },
      {
        "field": "life_habit",
        "label": "Way of life",
        "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": "parent_name",
        "label": "Parent group",
        "source": "PBDB"
      },
      {
        "field": "headline",
        "label": "Age (headline)",
        "source": "PBDB"
      }
    ],
    "disputed": [
      {
        "field": "authority",
        "label": "Authority",
        "note": "The sources agree on who named it but give different years.",
        "values": [
          {
            "source": "PBDB",
            "source_id": "pbdb",
            "value": "Young 1940"
          },
          {
            "source": "Wikidata",
            "source_id": "wikidata",
            "value": "Yang Zhongjian, 1942"
          }
        ]
      }
    ],
    "withheld": [
      {
        "records": "occurrences",
        "status": "tentative",
        "count": 2,
        "reason": "PBDB fossil records identified only tentatively (for example 'cf.', '?', or the genus name in quotation marks, PBDB's mark for a loose use)"
      }
    ]
  },
  "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": "Yunnanosaurus",
    "scope": "confirmed matches only",
    "data_sources": [
      {
        "values": 1439,
        "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": 25,
        "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": 3519,
        "title": "File:Yunnanosaurus BW.jpg",
        "category": "Taxon image",
        "url": "https://upload.wikimedia.org/wikipedia/commons/1/1b/Yunnanosaurus_BW.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original",
        "page_url": "https://commons.wikimedia.org/wiki/File:Yunnanosaurus_BW.jpg",
        "source": "commons",
        "rights_holder": "No machine-readable author provided. ArthurWeasley~commonswiki assumed (based on copyright claims).",
        "catalog_number": null,
        "license_id": "CC-BY-2.5",
        "license_name": "Creative Commons Attribution 2.5",
        "license_url": "https://creativecommons.org/licenses/by/2.5/",
        "requires_attribution": true,
        "share_alike": false,
        "attribution": "No machine-readable author provided. ArthurWeasley~commonswiki assumed (based on copyright claims). (No machine-readable source provided. Own work assumed (based on copyright claims).), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Yunnanosaurus_BW.jpg)"
      }
    ],
    "derived_ages": null,
    "references": 54
  },
  "credits_markdown": "## Yunnanosaurus: 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 (1)\n- “File:Yunnanosaurus BW.jpg” (Taxon image): No machine-readable author provided. ArthurWeasley~commonswiki assumed (based on copyright claims). (No machine-readable source provided. Own work assumed (based on copyright claims).), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Yunnanosaurus_BW.jpg). [Creative Commons Attribution 2.5](https://creativecommons.org/licenses/by/2.5/).\n\n### Scientific references\n\n54 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": "56630",
      "url": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=56630"
    },
    {
      "scheme": "enwiki",
      "name": "Wikipedia (English)",
      "id": "Yunnanosaurus",
      "url": "https://en.wikipedia.org/wiki/Yunnanosaurus"
    },
    {
      "scheme": "gbif",
      "name": "GBIF",
      "id": "4817967",
      "url": "https://www.gbif.org/species/4817967"
    },
    {
      "scheme": "wikidata",
      "name": "Wikidata",
      "id": "Q427650",
      "url": "https://www.wikidata.org/wiki/Q427650"
    }
  ],
  "other_names": {
    "species": [
      "Yunnanosaurus huangi",
      "Yunnanosaurus robustus",
      "Yunnanosaurus youngi"
    ],
    "synonyms": []
  },
  "original_description": {
    "citation": "C.-C. Young (1940). Preliminary notes on the Lufeng vertebrate fossils. Bulletin of the Geological Society of China 20(3-4): 235–239.",
    "authors": "C.-C. Young",
    "year": 1940,
    "title": "Preliminary notes on the Lufeng vertebrate fossils",
    "publication": "Bulletin of the Geological Society of China",
    "volume": "20",
    "issue": "3-4",
    "pages": "235–239",
    "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 (Young 1940)."
      ]
    },
    "source": "pbdb",
    "source_name": "Paleobiology Database",
    "license_id": "CC-BY-4.0",
    "pbdb_reference_no": "12539"
  },
  "summary": "Omnisaura summary: Yunnanosaurus, Young 1940\n\n- Named by: Young 1940 (low confidence: PBDB and Wikidata agree on who named it but give years more than one apart; an editor has not ruled yet).\n- Parent group: Sauropodiformes (medium confidence: only PBDB gives this; nothing contradicts it).\n- Age, as published by the Paleobiology Database: Hettangian to Pliensbachian, 201.4–184.2 million years ago (medium confidence: only PBDB gives this; nothing contradicts it).\n- Age, Omnisaura's own calculation (not a published figure): 201.4–184.2 million years ago (medium confidence: Omnisaura's calculation from 15 confirmed PBDB records).\n- Fossils found in: China (medium: only PBDB records it (15 records)).\n- Rock formations: Lufeng (medium: only PBDB records it (14 records)); Fengjiahe (low: only one PBDB record).\n- Original description: C.-C. Young (1940). Preliminary notes on the Lufeng vertebrate fossils. Bulletin of the Geological Society of China 20(3-4): 235–239. (medium confidence: only PBDB gives this; its author and year match the naming authority (Young 1940)).\n\nNot known or disputed:\n- Authority: sources disagree (PBDB says Young 1940; Wikidata says Yang Zhongjian, 1942). Awaiting an Omnisaura editor.\n- Type species: no source Omnisaura uses gives this.\n- Order: no source Omnisaura uses gives this.\n- Family: no source Omnisaura uses gives this.\n- Diet: no source Omnisaura uses gives this.\n- Way of life: 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- 2 record(s) left out: pBDB fossil records identified only tentatively (for example 'cf.', '?', or the genus name in quotation marks, PBDB's mark for a loose use).\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)."
}