{
  "schema": "omnisaura.snapshot/v2",
  "uid": "omnisaura:profile:protoceratops",
  "genus": "Protoceratops",
  "generated_at": "2026-10-12T10:16:43Z",
  "raw_run": "2026-10-12",
  "profile": {
    "name": {
      "value": "Protoceratops",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "authority": {
      "value": "Granger and Gregory 1923",
      "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": "Ornithischia",
      "rule": "Gap filled from NHM",
      "rule_id": "merge:gap_fill_nhm",
      "synthesis": false,
      "sources": [
        {
          "source": "nhm",
          "license": "CC0-1.0"
        }
      ]
    },
    "family": {
      "value": "Protoceratopsidae",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        },
        {
          "source": "nhm",
          "license": "CC0-1.0"
        }
      ]
    },
    "parent_name": {
      "value": "Protoceratopsidae",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "headline": {
      "value": [
        121.4,
        72.2,
        "Aptian",
        "Campanian"
      ],
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "evidence": {
      "value": [
        100.5,
        66.0
      ],
      "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",
        "MN"
      ],
      "rule": "Union of all sources (ISO 3166)",
      "rule_id": "merge:union_iso3166",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        },
        {
          "source": "nhm",
          "license": "CC0-1.0"
        }
      ]
    },
    "formations": {
      "value": [
        "Baruungoyot",
        "Bayan Mandahu",
        "Djadokhta",
        "Miaogou",
        "Wulansuhai"
      ],
      "rule": "Canonical names, automatic and editor-approved matches applied",
      "rule_id": "merge:canonical_formations",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        },
        {
          "source": "omnisaura",
          "license": "OMNISAURA-EDITORIAL"
        },
        {
          "source": "nhm",
          "license": "CC0-1.0"
        }
      ]
    },
    "common_names": {
      "value": [
        "ja:プロトケラトプス",
        "zh:原角龍"
      ],
      "rule": "Wikidata leads",
      "rule_id": "merge:lead_wikidata",
      "synthesis": false,
      "sources": [
        {
          "source": "wikidata",
          "license": "CC0-1.0"
        }
      ]
    },
    "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": "high",
      "basis": "corroborated",
      "reasons": [
        "PBDB and Wikidata agree."
      ]
    },
    "parent_name": {
      "level": "medium",
      "basis": "single_source",
      "reasons": [
        "Only PBDB gives this; nothing contradicts it."
      ],
      "source": "PBDB"
    },
    "family": {
      "level": "low",
      "basis": "disputed",
      "reasons": [
        "Sources disagree and an editor has not ruled yet."
      ]
    },
    "order": {
      "level": "medium",
      "basis": "single_source",
      "reasons": [
        "Only NHM gives this; nothing contradicts it."
      ],
      "source": "NHM"
    },
    "headline": {
      "level": "low",
      "basis": "disputed",
      "reasons": [
        "Sources disagree and an editor has not ruled yet."
      ]
    },
    "evidence": {
      "level": "medium",
      "basis": "synthesis",
      "reasons": [
        "Omnisaura's calculation from 32 confirmed PBDB records.",
        "1 record(s) identified only to genus, dated well outside the species-level records, were set aside as doubtful."
      ]
    },
    "common_names": {
      "level": "medium",
      "basis": "single_source",
      "reasons": [
        "Only Wikidata gives this; nothing contradicts it."
      ],
      "source": "Wikidata"
    },
    "countries": {
      "level": "mixed",
      "basis": "items",
      "reasons": [
        "Entries differ; see each entry."
      ],
      "items": [
        {
          "value": "CN",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (7 records)."
          ],
          "source": "PBDB"
        },
        {
          "value": "MN",
          "level": "high",
          "basis": "corroborated",
          "reasons": [
            "NHM and PBDB both record it."
          ]
        }
      ]
    },
    "formations": {
      "level": "mixed",
      "basis": "items",
      "reasons": [
        "Entries differ; see each entry."
      ],
      "items": [
        {
          "value": "Baruungoyot",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (4 records)."
          ],
          "source": "PBDB"
        },
        {
          "value": "Bayan Mandahu",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (5 records)."
          ],
          "source": "PBDB"
        },
        {
          "value": "Djadokhta",
          "level": "high",
          "basis": "editor",
          "reasons": [
            "An Omnisaura editor ruled on it."
          ]
        },
        {
          "value": "Miaogou",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Wulansuhai",
          "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": "named_after",
        "label": "Named after",
        "note": "No source we use gives this yet."
      }
    ],
    "single_source": [
      {
        "field": "parent_name",
        "label": "Parent group",
        "source": "PBDB"
      },
      {
        "field": "order",
        "label": "Order",
        "source": "NHM"
      },
      {
        "field": "common_names",
        "label": "Common names",
        "source": "Wikidata"
      }
    ],
    "disputed": [
      {
        "field": "family",
        "label": "Family",
        "note": "The sources give different values.",
        "values": [
          {
            "source": "PBDB",
            "source_id": "pbdb",
            "value": "Protoceratopsidae"
          },
          {
            "source": "NHM",
            "source_id": "nhm",
            "value": "Ceratopsidae"
          }
        ]
      },
      {
        "field": "headline",
        "label": "Age",
        "note": "The ages of the records reach well beyond the published range.",
        "values": [
          {
            "source": "PBDB",
            "source_id": "pbdb",
            "value": "121.4–72.2 Ma"
          },
          {
            "source": "NHM specimens",
            "source_id": "nhm",
            "value": "100.5–66 Ma"
          }
        ]
      }
    ],
    "withheld": [
      {
        "records": "occurrences",
        "status": "tentative",
        "count": 5,
        "reason": "PBDB fossil records identified only tentatively (for example 'cf.' or '?')"
      }
    ]
  },
  "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": [
    {
      "name": "Djadochta Formation",
      "same_as": "Djadokhta",
      "status": "suggested",
      "ruling": "approved"
    }
  ],
  "credits": {
    "genus": "Protoceratops",
    "scope": "confirmed matches only",
    "data_sources": [
      {
        "values": 3,
        "retrieved": [],
        "source": "omnisaura",
        "license_id": "OMNISAURA-EDITORIAL",
        "license_name": "Omnisaura editorial content (© Future Sailors, all rights reserved)",
        "license_url": "https://github.com/FutureSailorDesign/Omnisaura-/blob/main/docs/licences/omnisaura-editorial.md",
        "requires_attribution": true,
        "attribution": "Omnisaura editorial decisions © Future Sailors",
        "source_name": "Omnisaura editorial",
        "homepage": null
      },
      {
        "values": 3683,
        "retrieved": [
          "2026-10-04",
          "2026-10-05",
          "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": 128,
        "retrieved": [
          "2026-10-04",
          "2026-10-05"
        ],
        "source": "nhm",
        "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": "Natural History Museum (London) Data Portal, Collection specimens dataset, https://doi.org/10.5519/0002965. Image licenses vary per record.",
        "source_name": "Natural History Museum Data Portal",
        "homepage": "https://data.nhm.ac.uk"
      },
      {
        "values": 34,
        "retrieved": [
          "2026-10-05"
        ],
        "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": 688,
        "title": "File:Carnegie Protoceratops andrewsi.jpg",
        "category": "Taxon image",
        "url": "https://upload.wikimedia.org/wikipedia/commons/a/aa/Carnegie_Protoceratops_andrewsi.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original",
        "page_url": "https://commons.wikimedia.org/wiki/File:Carnegie_Protoceratops_andrewsi.jpg",
        "source": "commons",
        "rights_holder": "Karen",
        "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": "Karen (protoceratops Uploaded by FunkMonk), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Carnegie_Protoceratops_andrewsi.jpg)"
      },
      {
        "media_id": 689,
        "title": "File:Protoceratops andrewsi Restoration.png",
        "category": "Taxon image",
        "url": "https://upload.wikimedia.org/wikipedia/commons/8/84/Protoceratops_andrewsi_Restoration.png?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original",
        "page_url": "https://commons.wikimedia.org/wiki/File:Protoceratops_andrewsi_Restoration.png",
        "source": "commons",
        "rights_holder": "PaleoNeolitic",
        "catalog_number": null,
        "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,
        "share_alike": false,
        "attribution": "PaleoNeolitic (Own work), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Protoceratops_andrewsi_Restoration.png)"
      },
      {
        "media_id": 684,
        "title": "NHM-UK_P_DF118_03_22_0515",
        "category": "Register",
        "url": "https://data.nhm.ac.uk/media/27a8eccb-5cb5-4478-907b-1bffed3780ae",
        "page_url": null,
        "source": "nhm",
        "rights_holder": "The Trustees of the Natural History Museum, London",
        "catalog_number": "PV R 5134",
        "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,
        "share_alike": false,
        "attribution": "The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/27a8eccb-5cb5-4478-907b-1bffed3780ae)"
      },
      {
        "media_id": 685,
        "title": "NHM-UK_P_DF118_03_22_0517",
        "category": "Register",
        "url": "https://data.nhm.ac.uk/media/73cbedc2-a57c-476f-9ea6-f1f1faa70c1e",
        "page_url": null,
        "source": "nhm",
        "rights_holder": "The Trustees of the Natural History Museum, London",
        "catalog_number": "PV R 5146",
        "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,
        "share_alike": false,
        "attribution": "The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/73cbedc2-a57c-476f-9ea6-f1f1faa70c1e)"
      },
      {
        "media_id": 687,
        "title": "NHM-UK_P_DF118_03_22_0517",
        "category": "Register",
        "url": "https://data.nhm.ac.uk/media/73cbedc2-a57c-476f-9ea6-f1f1faa70c1e",
        "page_url": null,
        "source": "nhm",
        "rights_holder": "The Trustees of the Natural History Museum, London",
        "catalog_number": "PV R 5148",
        "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,
        "share_alike": false,
        "attribution": "The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/73cbedc2-a57c-476f-9ea6-f1f1faa70c1e)"
      },
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        "media_id": 686,
        "title": "NHM-UK_P_DF118_03_24_0339",
        "category": "Register",
        "url": "https://data.nhm.ac.uk/media/2de64622-0559-4c09-9e07-b2d47cb854c1",
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        "source": "nhm",
        "rights_holder": "The Trustees of the Natural History Museum, London",
        "catalog_number": "PV R 9498",
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        "license_name": "Creative Commons Attribution 4.0",
        "license_url": "https://creativecommons.org/licenses/by/4.0/",
        "requires_attribution": true,
        "share_alike": false,
        "attribution": "The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/2de64622-0559-4c09-9e07-b2d47cb854c1)"
      },
      {
        "media_id": 683,
        "title": "Mythical Creatures Exhibition Colchester",
        "category": "Specimen",
        "url": "https://data.nhm.ac.uk/media/5249ecbe-c1b9-42fc-9653-a1d35f56b6c8",
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        "source": "nhm",
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        "attribution": "The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/5249ecbe-c1b9-42fc-9653-a1d35f56b6c8)"
      },
      {
        "media_id": 682,
        "title": "R14376a skull cast on display at Colchester Castle for Mythical Creatures",
        "category": "Specimen",
        "url": "https://data.nhm.ac.uk/media/8d016b4c-9b40-4fdf-b3be-c118eeda9920",
        "page_url": null,
        "source": "nhm",
        "rights_holder": "The Trustees of the Natural History Museum, London",
        "catalog_number": "PV R 14376 a",
        "license_id": "CC-BY-4.0",
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        "license_url": "https://creativecommons.org/licenses/by/4.0/",
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        "attribution": "The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/8d016b4c-9b40-4fdf-b3be-c118eeda9920)"
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    ],
    "derived_ages": {
      "specimens": 2,
      "ics_version": "v2024/12"
    },
    "references": 154
  },
  "credits_markdown": "## Protoceratops: Sources & credits\n\n_Scope: confirmed matches only._\n\n### Data\n- **Omnisaura editorial**: [Omnisaura editorial content (© Future Sailors, all rights reserved)](https://github.com/FutureSailorDesign/Omnisaura-/blob/main/docs/licences/omnisaura-editorial.md). Omnisaura editorial decisions © Future Sailors\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, 11 October 2026.\n- **Natural History Museum Data Portal** (https://data.nhm.ac.uk): [Creative Commons Zero 1.0 (public domain dedication)](https://creativecommons.org/publicdomain/zero/1.0/). Natural History Museum (London) Data Portal, Collection specimens dataset, https://doi.org/10.5519/0002965. Image licenses vary per record. Retrieved 4 October 2026, 5 October 2026. _Credited as a courtesy: this licence doesn't require attribution._\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 5 October 2026. _Credited as a courtesy: this licence doesn't require attribution._\n\nAges for 2 specimen(s) were derived from their stage names using the ICS International Chronostratigraphic Chart v2024/12 (International Commission on Stratigraphy), via the Paleobiology Database (CC BY 4.0).\n\n### Images (8)\n- “File:Carnegie Protoceratops andrewsi.jpg” (Taxon image): Karen (protoceratops Uploaded by FunkMonk), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Carnegie_Protoceratops_andrewsi.jpg). [Creative Commons Attribution 2.0](https://creativecommons.org/licenses/by/2.0/).\n- “File:Protoceratops andrewsi Restoration.png” (Taxon image): PaleoNeolitic (Own work), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Protoceratops_andrewsi_Restoration.png). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_22_0515” (specimen PV R 5134): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/27a8eccb-5cb5-4478-907b-1bffed3780ae). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_22_0517” (specimen PV R 5146): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/73cbedc2-a57c-476f-9ea6-f1f1faa70c1e). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_22_0517” (specimen PV R 5148): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/73cbedc2-a57c-476f-9ea6-f1f1faa70c1e). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_24_0339” (specimen PV R 9498): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/2de64622-0559-4c09-9e07-b2d47cb854c1). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “Mythical Creatures Exhibition Colchester” (specimen PV R 14376 a): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/5249ecbe-c1b9-42fc-9653-a1d35f56b6c8). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “R14376a skull cast on display at Colchester Castle for Mythical Creatures” (specimen PV R 14376 a): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/8d016b4c-9b40-4fdf-b3be-c118eeda9920). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n\n### Scientific references\n\n154 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": "W. Granger, W. K. Gregory (1923). Protoceratops andrewsi, a pre-ceratopsian dinosaur from Mongolia, with an appendix on the structural relationships of the Protoceratops beds. American Museum Novitates 72: 1–9.",
    "authors": "W. Granger, W. K. Gregory",
    "year": 1923,
    "title": "Protoceratops andrewsi, a pre-ceratopsian dinosaur from Mongolia, with an appendix on the structural relationships of the Protoceratops beds",
    "publication": "American Museum Novitates",
    "volume": "72",
    "issue": null,
    "pages": "1–9",
    "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": "high",
      "reasons": [
        "PBDB gives this publication for the name; its author and year match the naming authority (Granger and Gregory 1923), on which PBDB and Wikidata agree."
      ]
    },
    "source": "pbdb",
    "source_name": "Paleobiology Database",
    "license_id": "CC-BY-4.0",
    "pbdb_reference_no": "14566"
  },
  "summary": "Omnisaura summary: Protoceratops, Granger and Gregory 1923\n\n- Named by: Granger and Gregory 1923 (high confidence: PBDB and Wikidata agree).\n- Family: Protoceratopsidae (low confidence: sources disagree and an editor has not ruled yet).\n- Order: Ornithischia (medium confidence: only NHM gives this; nothing contradicts it).\n- Parent group: Protoceratopsidae (medium confidence: only PBDB gives this; nothing contradicts it).\n- Age, as published by the Paleobiology Database: Aptian to Campanian, 121.4–72.2 million years ago (low confidence: sources disagree and an editor has not ruled yet).\n- Age, Omnisaura's own calculation (not a published figure): 100.5–66 million years ago (medium confidence: Omnisaura's calculation from 32 confirmed PBDB records).\n- Fossils found in: Mongolia (high: NHM and PBDB both record it); China (medium: only PBDB records it (7 records)).\n- Rock formations: Djadokhta (high: an Omnisaura editor ruled on it); Baruungoyot (medium: only PBDB records it (4 records)); Bayan Mandahu (medium: only PBDB records it (5 records)); Miaogou (low: only one PBDB record); Wulansuhai (low: only one PBDB record).\n- Original description: W. Granger, W. K. Gregory (1923). Protoceratops andrewsi, a pre-ceratopsian dinosaur from Mongolia, with an appendix on the structural relationships of the Protoceratops beds. American Museum Novitates 72: 1–9. (high confidence: PBDB gives this publication for the name; its author and year match the naming authority (Granger and Gregory 1923), on which PBDB and Wikidata agree).\n- Common names: プロトケラトプス, 原角龍 (medium confidence: only Wikidata gives this; nothing contradicts it).\n\nNot known or disputed:\n- Family: sources disagree (PBDB says Protoceratopsidae; NHM says Ceratopsidae). Awaiting an Omnisaura editor.\n- Age: sources disagree (PBDB says 121.4–72.2 Ma; NHM specimens says 100.5–66 Ma). Awaiting an Omnisaura editor.\n- Type species: no source Omnisaura uses gives this.\n- Named after: no source Omnisaura uses gives this.\n- 5 fossil record(s) left out because their identification is uncertain.\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): Natural History Museum Data Portal (CC0-1.0); Omnisaura editorial (OMNISAURA-EDITORIAL); Paleobiology Database (CC-BY-4.0); Wikidata (CC0-1.0)."
}