{
  "schema": "omnisaura.snapshot/v3",
  "uid": "omnisaura:profile:triceratops",
  "genus": "Triceratops",
  "data_as_of": "2026-10-04",
  "raw_run": "2026-10-04_2",
  "profile": {
    "name": {
      "value": "Triceratops",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "authority": {
      "value": "Marsh 1889",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "type_species": {
      "value": "Triceratops horridus",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "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": "Ceratopsidae",
      "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": "Triceratopsini",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "headline": {
      "value": [
        83.6,
        66.0,
        "Campanian",
        "Maastrichtian"
      ],
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "evidence": {
      "value": [
        83.6,
        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": [
        "CA",
        "US"
      ],
      "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": [
        "Denver",
        "Dinosaur Park",
        "Ferris",
        "Frenchman",
        "Hall Lake",
        "Hell Creek Formation",
        "Lance Formation",
        "Laramie Formation",
        "Medicine Bow",
        "Scollard"
      ],
      "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": "nhm",
          "license": "CC0-1.0"
        }
      ]
    },
    "diet": {
      "value": "herbivore",
      "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",
      "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": [
        "zh:三角龍"
      ],
      "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."
      ]
    },
    "type_species": {
      "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": "high",
      "basis": "corroborated",
      "reasons": [
        "PBDB and NHM agree."
      ]
    },
    "order": {
      "level": "medium",
      "basis": "single_source",
      "reasons": [
        "Only NHM gives this; nothing contradicts it."
      ],
      "source": "NHM"
    },
    "headline": {
      "level": "high",
      "basis": "corroborated",
      "reasons": [
        "PBDB and NHM agree."
      ]
    },
    "evidence": {
      "level": "medium",
      "basis": "synthesis",
      "reasons": [
        "Omnisaura's calculation from 135 confirmed PBDB records."
      ]
    },
    "common_names": {
      "level": "medium",
      "basis": "single_source",
      "reasons": [
        "Only Wikidata gives this; nothing contradicts it."
      ],
      "source": "Wikidata"
    },
    "diet": {
      "level": "medium",
      "basis": "single_source",
      "reasons": [
        "Only PBDB gives this, and it infers it for the whole of Ceratopsia, 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 Ceratopsia; behaviour is rarely known for one genus."
      ]
    },
    "countries": {
      "level": "mixed",
      "basis": "items",
      "reasons": [
        "Entries differ; see each entry."
      ],
      "items": [
        {
          "value": "CA",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (13 records)."
          ],
          "source": "PBDB"
        },
        {
          "value": "US",
          "level": "high",
          "basis": "corroborated",
          "reasons": [
            "NHM and PBDB both record it."
          ]
        }
      ]
    },
    "formations": {
      "level": "mixed",
      "basis": "items",
      "reasons": [
        "Entries differ; see each entry."
      ],
      "items": [
        {
          "value": "Denver",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (2 records)."
          ],
          "source": "PBDB"
        },
        {
          "value": "Dinosaur Park",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Ferris",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (2 records)."
          ],
          "source": "PBDB"
        },
        {
          "value": "Frenchman",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (11 records)."
          ],
          "source": "PBDB"
        },
        {
          "value": "Hall Lake",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Hell Creek Formation",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (60 records)."
          ],
          "source": "PBDB"
        },
        {
          "value": "Lance Formation",
          "level": "high",
          "basis": "corroborated",
          "reasons": [
            "NHM and PBDB both record it."
          ]
        },
        {
          "value": "Laramie Formation",
          "level": "high",
          "basis": "corroborated",
          "reasons": [
            "NHM and PBDB both record it."
          ]
        },
        {
          "value": "Medicine Bow",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Scollard",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        }
      ]
    }
  },
  "gaps": {
    "missing": [
      {
        "field": "named_after",
        "label": "Named after",
        "note": "No source we use gives this yet."
      }
    ],
    "single_source": [
      {
        "field": "type_species",
        "label": "Type species",
        "source": "PBDB"
      },
      {
        "field": "parent_name",
        "label": "Parent group",
        "source": "PBDB"
      },
      {
        "field": "order",
        "label": "Order",
        "source": "NHM"
      },
      {
        "field": "common_names",
        "label": "Common names",
        "source": "Wikidata"
      },
      {
        "field": "diet",
        "label": "Diet",
        "source": "PBDB"
      }
    ],
    "disputed": [],
    "withheld": [
      {
        "records": "occurrences",
        "status": "related_other_genus",
        "count": 7,
        "reason": "occurrences with status related_other_genus"
      },
      {
        "records": "occurrences",
        "status": "tentative",
        "count": 24,
        "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": [
    {
      "name": "Hell Creek",
      "same_as": "Hell Creek Formation",
      "status": "automatic",
      "ruling": null
    },
    {
      "name": "Lance",
      "same_as": "Lance Formation",
      "status": "automatic",
      "ruling": null
    },
    {
      "name": "Laramie",
      "same_as": "Laramie Formation",
      "status": "automatic",
      "ruling": null
    }
  ],
  "credits": {
    "genus": "Triceratops",
    "scope": "confirmed matches only",
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        "requires_attribution": true,
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        "homepage": "https://paleobiodb.org"
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        "homepage": "https://data.nhm.ac.uk"
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        "retrieved": [
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        "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/ccbc4123-1b60-4514-bd4e-d0da2aa5ade4)"
      },
      {
        "media_id": 86,
        "title": "NHMUK_PV_R_3886_Triceratops_gallery_label",
        "category": "Specimen",
        "url": "https://data.nhm.ac.uk/media/07cad1c5-fc50-4463-8cb1-6869d5af7f35",
        "page_url": null,
        "source": "nhm",
        "rights_holder": "The Trustees of the Natural History Museum, London",
        "catalog_number": "PV R 3886",
        "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/07cad1c5-fc50-4463-8cb1-6869d5af7f35)"
      },
      {
        "media_id": 85,
        "title": "NHMUK_PV_R_3886_Triceratops_specimen_in_gallery_02",
        "category": "Specimen",
        "url": "https://data.nhm.ac.uk/media/6f5f6763-eb9a-434c-801f-f00c052334bc",
        "page_url": null,
        "source": "nhm",
        "rights_holder": "The Trustees of the Natural History Museum, London",
        "catalog_number": "PV R 3886",
        "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/6f5f6763-eb9a-434c-801f-f00c052334bc)"
      },
      {
        "media_id": 84,
        "title": "NHMUK_PV_R_3886_Triceratops_specimen_in_gallery_2024",
        "category": "Specimen",
        "url": "https://data.nhm.ac.uk/media/34751d4d-4e06-452c-bc81-5d62e08d97fc",
        "page_url": null,
        "source": "nhm",
        "rights_holder": "The Trustees of the Natural History Museum, London",
        "catalog_number": "PV R 3886",
        "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/34751d4d-4e06-452c-bc81-5d62e08d97fc)"
      },
      {
        "media_id": 83,
        "title": "NHMUK_PV_R_3912_Trex_location_in_gallery",
        "category": "Specimen",
        "url": "https://data.nhm.ac.uk/media/8b0e9b1c-ef3f-438c-aa04-591abe087da3",
        "page_url": null,
        "source": "nhm",
        "rights_holder": "The Trustees of the Natural History Museum, London",
        "catalog_number": "PV R 3886",
        "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/8b0e9b1c-ef3f-438c-aa04-591abe087da3)"
      }
    ],
    "derived_ages": {
      "specimens": 2,
      "ics_version": "v2024/12"
    },
    "references": 241
  },
  "credits_markdown": "## Triceratops: 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, 10 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. _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 4 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 (15)\n- “File:202007 Triceratops horridus.svg” (Taxon image): DataBase Center for Life Science (DBCLS) (https://doi.org/10.7875/togopic.2020.171), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:202007_Triceratops_horridus.svg). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “File:LA-Triceratops mount-2.jpg” (Taxon image): Source: Allie_Caulfield Derivative: User:MathKnight (File:LA-Triceratops mount-1.jpg (by Allie_Caulfield )), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:LA-Triceratops_mount-2.jpg). [Creative Commons Attribution-ShareAlike 3.0](https://creativecommons.org/licenses/by-sa/3.0/). Shown unmodified (share-alike licence).\n- “File:Triceratops ROM Toronto.jpg” (Taxon image): Mykola Swarnyk (Own work), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Triceratops_ROM_Toronto.jpg). [Creative Commons Attribution-ShareAlike 3.0](https://creativecommons.org/licenses/by-sa/3.0/). Shown unmodified (share-alike licence).\n- “File:UCMP Triceratops right.JPG” (Taxon image): EncycloPetey (Own work), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:UCMP_Triceratops_right.JPG). [Creative Commons Attribution-ShareAlike 3.0](https://creativecommons.org/licenses/by-sa/3.0/). Shown unmodified (share-alike licence).\n- “NHM-UK_P_DF118_03_24_0533” (specimen PV R 10957): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/4a689d8e-3f9a-4830-aa9d-33614a23250f). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_22_0205” (specimen PV R 3677): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/e36b4202-f742-43c2-9b5a-0ffbbfb47884). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_22_0249” (specimen PV R 3886): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/07ef627d-6d97-4d94-9d5f-676841588a50). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_22_0249” (specimen PV R 3887): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/07ef627d-6d97-4d94-9d5f-676841588a50). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_24_0193” (specimen PV R 8397): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/0b7f7c7f-9e7f-4321-b015-cac1f1d4d8d6). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHMUK PV R 10957 Triceratops gallery label” (specimen PV R 10957): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/37266297-b44b-4c44-92af-1a35c9d9ca40). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHMUK PV R 10957 Triceratops in gallery” (specimen PV R 10957): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/ccbc4123-1b60-4514-bd4e-d0da2aa5ade4). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHMUK_PV_R_3886_Triceratops_gallery_label” (specimen PV R 3886): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/07cad1c5-fc50-4463-8cb1-6869d5af7f35). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHMUK_PV_R_3886_Triceratops_specimen_in_gallery_02” (specimen PV R 3886): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/6f5f6763-eb9a-434c-801f-f00c052334bc). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHMUK_PV_R_3886_Triceratops_specimen_in_gallery_2024” (specimen PV R 3886): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/34751d4d-4e06-452c-bc81-5d62e08d97fc). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHMUK_PV_R_3912_Trex_location_in_gallery” (specimen PV R 3886): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/8b0e9b1c-ef3f-438c-aa04-591abe087da3). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n\n### Scientific references\n\n241 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": "38862",
      "url": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38862"
    },
    {
      "scheme": "enwiki",
      "name": "Wikipedia (English)",
      "id": "Triceratops",
      "url": "https://en.wikipedia.org/wiki/Triceratops"
    },
    {
      "scheme": "gbif",
      "name": "GBIF",
      "id": "4823146",
      "url": "https://www.gbif.org/species/4823146"
    },
    {
      "scheme": "wikidata",
      "name": "Wikidata",
      "id": "Q14384",
      "url": "https://www.wikidata.org/wiki/Q14384"
    }
  ],
  "other_names": {
    "species": [
      "Triceratops albertensis",
      "Triceratops brevicornus",
      "Triceratops calicornis",
      "Triceratops elatus",
      "Triceratops eurycephalus",
      "Triceratops flabellatus",
      "Triceratops horridus",
      "Triceratops obtusus",
      "Triceratops prorsus",
      "Triceratops serratus",
      "Triceratops sulcatus"
    ],
    "synonyms": [
      {
        "name": "Diceratops",
        "status": "subjective synonym of",
        "authority": "Hatcher and Lull 1905"
      },
      {
        "name": "Diceratus",
        "status": "subjective synonym of",
        "authority": "Mateus 2008"
      },
      {
        "name": "Nedoceratops",
        "status": "subjective synonym of",
        "authority": "Ukrainsky 2007"
      },
      {
        "name": "Ojoceratops",
        "status": "subjective synonym of",
        "authority": "Sullivan and Lucas 2010"
      },
      {
        "name": "Sterrholophus",
        "status": "subjective synonym of",
        "authority": "Marsh 1891"
      },
      {
        "name": "Tatankaceratops",
        "status": "subjective synonym of",
        "authority": "Ott and Larson 2010"
      }
    ]
  },
  "original_description": {
    "citation": "O. C. Marsh (1889). Notice of gigantic horned Dinosauria from the Cretaceous. American Journal of Science 38: 173–175.",
    "authors": "O. C. Marsh",
    "year": 1889,
    "title": "Notice of gigantic horned Dinosauria from the Cretaceous",
    "publication": "American Journal of Science",
    "volume": "38",
    "issue": null,
    "pages": "173–175",
    "doi": "10.2475/ajs.s3-38.224.173",
    "url": "https://doi.org/10.2475/ajs.s3-38.224.173",
    "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 (Marsh 1889), on which PBDB and Wikidata agree."
      ]
    },
    "source": "pbdb",
    "source_name": "Paleobiology Database",
    "license_id": "CC-BY-4.0",
    "pbdb_reference_no": "7835"
  },
  "summary": "Omnisaura summary: Triceratops, Marsh 1889\n\n- Named by: Marsh 1889 (high confidence: PBDB and Wikidata agree).\n- Family: Ceratopsidae (high confidence: PBDB and NHM agree).\n- Order: Ornithischia (medium confidence: only NHM gives this; nothing contradicts it).\n- Parent group: Triceratopsini (medium confidence: only PBDB gives this; nothing contradicts it).\n- Type species: Triceratops horridus (medium confidence: only PBDB gives this; nothing contradicts it).\n- Age, as published by the Paleobiology Database: Campanian to Maastrichtian, 83.6–66 million years ago (high confidence: PBDB and NHM agree).\n- Age, Omnisaura's own calculation (not a published figure): 83.6–66 million years ago (medium confidence: Omnisaura's calculation from 135 confirmed PBDB records).\n- Fossils found in: United States (high: NHM and PBDB both record it); Canada (medium: only PBDB records it (13 records)).\n- Rock formations: Lance Formation (high: NHM and PBDB both record it); Laramie Formation (high: NHM and PBDB both record it); Denver (medium: only PBDB records it (2 records)); Ferris (medium: only PBDB records it (2 records)); Frenchman (medium: only PBDB records it (11 records)); Hell Creek Formation (medium: only PBDB records it (60 records)); Dinosaur Park (low: only one PBDB record); Hall Lake (low: only one PBDB record); Medicine Bow (low: only one PBDB record); Scollard (low: only one PBDB record).\n- Original description: O. C. Marsh (1889). Notice of gigantic horned Dinosauria from the Cretaceous. American Journal of Science 38: 173–175. https://doi.org/10.2475/ajs.s3-38.224.173 (high confidence: PBDB gives this publication for the name; its author and year match the naming authority (Marsh 1889), on which PBDB and Wikidata agree).\n- Diet, inferred by PBDB for the group: herbivore (medium confidence: only PBDB gives this, and it infers it for the whole of Ceratopsia, 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 (low confidence: PBDB infers this way of life for the whole of Ceratopsia; behaviour is rarely known for one genus).\n- Common names: 三角龍 (medium confidence: only Wikidata gives this; nothing contradicts it).\n\nNot known or disputed:\n- Named after: no source Omnisaura uses gives this.\n- 7 record(s) left out: occurrences with status related_other_genus.\n- 24 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): Natural History Museum Data Portal (CC0-1.0); Paleobiology Database (CC-BY-4.0); Wikidata (CC0-1.0)."
}