{
  "schema": "omnisaura.snapshot/v3",
  "uid": "omnisaura:profile:daspletosaurus",
  "genus": "Daspletosaurus",
  "data_as_of": "2026-10-10",
  "raw_run": "2026-10-10",
  "profile": {
    "name": {
      "value": "Daspletosaurus",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "authority": {
      "value": "Russell 1970",
      "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": "Saurischia",
      "rule": "Gap filled from NHM",
      "rule_id": "merge:gap_fill_nhm",
      "synthesis": false,
      "sources": [
        {
          "source": "nhm",
          "license": "CC0-1.0"
        }
      ]
    },
    "family": {
      "value": "Tyrannosauridae",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "parent_name": {
      "value": "Daspletosaurini",
      "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,
        72.2
      ],
      "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": [
        "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": [
        "Belly River Series",
        "Dinosaur Park",
        "Judith River Formation",
        "Kirtland",
        "Mesaverde",
        "Oldman",
        "Two Medicine"
      ],
      "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": "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": "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": "medium",
      "basis": "single_source",
      "reasons": [
        "Only PBDB gives a range this precise; NHM's records give only a broader interval, which contains it."
      ],
      "source": "PBDB"
    },
    "evidence": {
      "level": "medium",
      "basis": "synthesis",
      "reasons": [
        "Omnisaura's calculation from 19 confirmed PBDB records."
      ]
    },
    "diet": {
      "level": "medium",
      "basis": "single_source",
      "reasons": [
        "Only PBDB gives this, and it infers it for the whole of Coelurosauria, 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": "mixed",
      "basis": "items",
      "reasons": [
        "Entries differ; see each entry."
      ],
      "items": [
        {
          "value": "CA",
          "level": "high",
          "basis": "corroborated",
          "reasons": [
            "NHM and PBDB both record it."
          ]
        },
        {
          "value": "US",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (9 records)."
          ],
          "source": "PBDB"
        }
      ]
    },
    "formations": {
      "level": "mixed",
      "basis": "items",
      "reasons": [
        "Entries differ; see each entry."
      ],
      "items": [
        {
          "value": "Belly River Series",
          "level": "low",
          "basis": "disputed",
          "reasons": [
            "Only NHM gives this name and it matches no PBDB formation; awaiting an editor."
          ]
        },
        {
          "value": "Dinosaur Park",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (5 records)."
          ],
          "source": "PBDB"
        },
        {
          "value": "Judith River Formation",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Kirtland",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Mesaverde",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Oldman",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (5 records)."
          ],
          "source": "PBDB"
        },
        {
          "value": "Two Medicine",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (6 records)."
          ],
          "source": "PBDB"
        }
      ]
    }
  },
  "gaps": {
    "missing": [
      {
        "field": "type_species",
        "label": "Type species",
        "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": "order",
        "label": "Order",
        "source": "NHM"
      },
      {
        "field": "headline",
        "label": "Age (headline)",
        "source": "PBDB"
      },
      {
        "field": "diet",
        "label": "Diet",
        "source": "PBDB"
      }
    ],
    "disputed": [
      {
        "field": "family",
        "label": "Family",
        "note": "The sources give different values.",
        "values": [
          {
            "source": "PBDB",
            "source_id": "pbdb",
            "value": "Tyrannosauridae"
          },
          {
            "source": "NHM",
            "source_id": "nhm",
            "value": "Tyrannosaruidae"
          }
        ]
      },
      {
        "field": "formations",
        "label": "Formations",
        "note": "One source names a formation the other does not.",
        "values": [
          {
            "source": "PBDB",
            "source_id": "pbdb",
            "value": null
          },
          {
            "source": "NHM",
            "source_id": "nhm",
            "value": "Belly River Series"
          }
        ]
      }
    ],
    "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": [
    {
      "name": "Judith River",
      "same_as": "Judith River Formation",
      "status": "automatic",
      "ruling": null
    }
  ],
  "credits": {
    "genus": "Daspletosaurus",
    "scope": "confirmed matches only",
    "data_sources": [
      {
        "values": 2184,
        "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": 37,
        "retrieved": [
          "2026-10-05",
          "2026-10-10"
        ],
        "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": 25,
        "retrieved": [
          "2026-10-10"
        ],
        "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": 2563,
        "title": "File:Daspletosaurus in Des Moines.jpg",
        "category": "Taxon image",
        "url": "https://upload.wikimedia.org/wikipedia/commons/8/8f/Daspletosaurus_in_Des_Moines.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original",
        "page_url": "https://commons.wikimedia.org/wiki/File:Daspletosaurus_in_Des_Moines.jpg",
        "source": "commons",
        "rights_holder": "Jonathan Chen",
        "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": "Jonathan Chen (Own work), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Daspletosaurus_in_Des_Moines.jpg)"
      },
      {
        "media_id": 2564,
        "title": "File:Daspletosaurus skull (1).jpg",
        "category": "Taxon image",
        "url": "https://upload.wikimedia.org/wikipedia/commons/9/9d/Daspletosaurus_skull_%281%29.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original",
        "page_url": "https://commons.wikimedia.org/wiki/File:Daspletosaurus_skull_(1).jpg",
        "source": "commons",
        "rights_holder": "Tim Evanson from Washington, D.C., United States of America",
        "catalog_number": null,
        "license_id": "CC-BY-SA-2.0",
        "license_name": "Creative Commons Attribution-ShareAlike 2.0",
        "license_url": "https://creativecommons.org/licenses/by-sa/2.0/",
        "requires_attribution": true,
        "share_alike": true,
        "attribution": "Tim Evanson from Washington, D.C., United States of America (adult Daspletosaurus skull - Glacier County Montana - Museum of the Rockies - 2013-07-08 Uploaded by FunkMonk), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Daspletosaurus_skull_(1).jpg)"
      },
      {
        "media_id": 2565,
        "title": "File:Daspletosaurus torosus steveoc.jpg",
        "category": "Taxon image",
        "url": "https://upload.wikimedia.org/wikipedia/commons/a/a5/Daspletosaurus_torosus_steveoc.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original",
        "page_url": "https://commons.wikimedia.org/wiki/File:Daspletosaurus_torosus_steveoc.jpg",
        "source": "commons",
        "rights_holder": "Steveoc 86 at English Wikipedia",
        "catalog_number": null,
        "license_id": "CC-BY-SA-2.5",
        "license_name": "Creative Commons Attribution-ShareAlike 2.5",
        "license_url": "https://creativecommons.org/licenses/by-sa/2.5/",
        "requires_attribution": true,
        "share_alike": true,
        "attribution": "Steveoc 86 at English Wikipedia (Originally from en.wikipedia; description page is/was here.), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Daspletosaurus_torosus_steveoc.jpg)"
      },
      {
        "media_id": 2566,
        "title": "File:Daspletosaurus wilsoni profile.png",
        "category": "Taxon image",
        "url": "https://upload.wikimedia.org/wikipedia/commons/8/86/Daspletosaurus_wilsoni_profile.png?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original",
        "page_url": "https://commons.wikimedia.org/wiki/File:Daspletosaurus_wilsoni_profile.png",
        "source": "commons",
        "rights_holder": "Stegotyranno",
        "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": "Stegotyranno (Own work), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Daspletosaurus_wilsoni_profile.png)"
      },
      {
        "media_id": 2561,
        "title": "NHM-UK_P_DF118_03_22_0457",
        "category": "Register",
        "url": "https://data.nhm.ac.uk/media/66512685-69a3-45d1-8caf-19c9d79a20e9",
        "page_url": null,
        "source": "nhm",
        "rights_holder": "The Trustees of the Natural History Museum, London",
        "catalog_number": "PV R 4863",
        "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/66512685-69a3-45d1-8caf-19c9d79a20e9)"
      },
      {
        "media_id": 2562,
        "title": "NHMUK PV R 4863 right dentary",
        "category": "Specimen",
        "url": "https://data.nhm.ac.uk/media/cabbf53a-792b-4659-abb7-324b9b4d5414",
        "page_url": null,
        "source": "nhm",
        "rights_holder": "The Trustees of the Natural History Museum, London",
        "catalog_number": "PV R 4863",
        "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/cabbf53a-792b-4659-abb7-324b9b4d5414)"
      }
    ],
    "derived_ages": {
      "specimens": 1,
      "ics_version": "v2024/12"
    },
    "references": 92
  },
  "credits_markdown": "## Daspletosaurus: 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- **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 5 October 2026, 10 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 10 October 2026. _Credited as a courtesy: this licence doesn't require attribution._\n\nAges for 1 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 (6)\n- “File:Daspletosaurus in Des Moines.jpg” (Taxon image): Jonathan Chen (Own work), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Daspletosaurus_in_Des_Moines.jpg). [Creative Commons Attribution-ShareAlike 4.0](https://creativecommons.org/licenses/by-sa/4.0/). Shown unmodified (share-alike licence).\n- “File:Daspletosaurus skull (1).jpg” (Taxon image): Tim Evanson from Washington, D.C., United States of America (adult Daspletosaurus skull - Glacier County Montana - Museum of the Rockies - 2013-07-08 Uploaded by FunkMonk), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Daspletosaurus_skull_(1).jpg). [Creative Commons Attribution-ShareAlike 2.0](https://creativecommons.org/licenses/by-sa/2.0/). Shown unmodified (share-alike licence).\n- “File:Daspletosaurus torosus steveoc.jpg” (Taxon image): Steveoc 86 at English Wikipedia (Originally from en.wikipedia; description page is/was here.), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Daspletosaurus_torosus_steveoc.jpg). [Creative Commons Attribution-ShareAlike 2.5](https://creativecommons.org/licenses/by-sa/2.5/). Shown unmodified (share-alike licence).\n- “File:Daspletosaurus wilsoni profile.png” (Taxon image): Stegotyranno (Own work), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Daspletosaurus_wilsoni_profile.png). [Creative Commons Attribution-ShareAlike 4.0](https://creativecommons.org/licenses/by-sa/4.0/). Shown unmodified (share-alike licence).\n- “NHM-UK_P_DF118_03_22_0457” (specimen PV R 4863): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/66512685-69a3-45d1-8caf-19c9d79a20e9). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHMUK PV R 4863 right dentary” (specimen PV R 4863): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/cabbf53a-792b-4659-abb7-324b9b4d5414). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n\n### Scientific references\n\n92 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": "38608",
      "url": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38608"
    },
    {
      "scheme": "enwiki",
      "name": "Wikipedia (English)",
      "id": "Daspletosaurus",
      "url": "https://en.wikipedia.org/wiki/Daspletosaurus"
    },
    {
      "scheme": "gbif",
      "name": "GBIF",
      "id": "4822634",
      "url": "https://www.gbif.org/species/4822634"
    },
    {
      "scheme": "wikidata",
      "name": "Wikidata",
      "id": "Q18511071",
      "url": "https://www.wikidata.org/wiki/Q18511071"
    }
  ],
  "other_names": {
    "species": [
      "Daspletosaurus horneri",
      "Daspletosaurus torosus",
      "Daspletosaurus wilsoni"
    ],
    "synonyms": []
  },
  "original_description": {
    "citation": "D. A. Russell (1970). Tyrannosaurs from the Late Cretaceous of western Canada. National Museum of Natural Sciences, Publications in Paleontology 1: 1–34.",
    "authors": "D. A. Russell",
    "year": 1970,
    "title": "Tyrannosaurs from the Late Cretaceous of western Canada",
    "publication": "National Museum of Natural Sciences, Publications in Paleontology",
    "volume": "1",
    "issue": null,
    "pages": "1–34",
    "doi": "10.1139/e72-031",
    "url": "https://doi.org/10.1139/e72-031",
    "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 (Russell 1970), on which PBDB and Wikidata agree."
      ]
    },
    "source": "pbdb",
    "source_name": "Paleobiology Database",
    "license_id": "CC-BY-4.0",
    "pbdb_reference_no": "4205"
  },
  "summary": "Omnisaura summary: Daspletosaurus, Russell 1970\n\n- Named by: Russell 1970 (high confidence: PBDB and Wikidata agree).\n- Family: Tyrannosauridae (low confidence: sources disagree and an editor has not ruled yet).\n- Order: Saurischia (medium confidence: only NHM gives this; nothing contradicts it).\n- Parent group: Daspletosaurini (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 (medium confidence: only PBDB gives a range this precise; NHM's records give only a broader interval, which contains it).\n- Age, Omnisaura's own calculation (not a published figure): 83.6–72.2 million years ago (medium confidence: Omnisaura's calculation from 19 confirmed PBDB records).\n- Fossils found in: Canada (high: NHM and PBDB both record it); United States (medium: only PBDB records it (9 records)).\n- Rock formations: Dinosaur Park (medium: only PBDB records it (5 records)); Oldman (medium: only PBDB records it (5 records)); Two Medicine (medium: only PBDB records it (6 records)); Belly River Series (low: only NHM gives this name and it matches no PBDB formation; awaiting an editor); Judith River Formation (low: only one PBDB record); Kirtland (low: only one PBDB record); Mesaverde (low: only one PBDB record).\n- Original description: D. A. Russell (1970). Tyrannosaurs from the Late Cretaceous of western Canada. National Museum of Natural Sciences, Publications in Paleontology 1: 1–34. https://doi.org/10.1139/e72-031 (high confidence: PBDB gives this publication for the name; its author and year match the naming authority (Russell 1970), on which PBDB and Wikidata agree).\n- Diet, inferred by PBDB for the group: carnivore (medium confidence: only PBDB gives this, and it infers it for the whole of Coelurosauria, 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- Family: sources disagree (PBDB says Tyrannosauridae; NHM says Tyrannosaruidae). Awaiting an Omnisaura editor.\n- Formations: sources disagree (NHM says Belly River Series). Awaiting an Omnisaura editor.\n- Type species: 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): Natural History Museum Data Portal (CC0-1.0); Paleobiology Database (CC-BY-4.0); Wikidata (CC0-1.0)."
}