{
  "schema": "omnisaura.snapshot/v3",
  "uid": "omnisaura:profile:allosaurus",
  "genus": "Allosaurus",
  "data_as_of": "2026-10-05",
  "raw_run": "2026-10-05",
  "profile": {
    "name": {
      "value": "Allosaurus",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "authority": {
      "value": "Marsh 1877",
      "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": null,
      "rule": null,
      "rule_id": null,
      "synthesis": false,
      "sources": []
    },
    "parent_name": {
      "value": "Allosauroidea",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "headline": {
      "value": [
        161.5,
        137.05,
        "Oxfordian",
        "Berriasian"
      ],
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "evidence": {
      "value": [
        161.5,
        143.1
      ],
      "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": [
        "DE",
        "PT",
        "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": [
        "Alcobaça",
        "Lepidotus Beds",
        "Lourinhã",
        "Morrison Formation"
      ],
      "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": [
        "fr:Allosaure",
        "ja:アロサウルス",
        "zh:異特龍屬"
      ],
      "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"
    },
    "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 137 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 Theropoda, the group this genus belongs to, not from this genus's own fossils."
      ],
      "source": "PBDB"
    },
    "life_habit": {
      "level": "low",
      "basis": "thin",
      "reasons": [
        "PBDB infers this way of life for the whole of Theropoda; behaviour is rarely known for one genus."
      ]
    },
    "countries": {
      "level": "mixed",
      "basis": "items",
      "reasons": [
        "Entries differ; see each entry."
      ],
      "items": [
        {
          "value": "DE",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "PT",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (8 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": "Alcobaça",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (5 records)."
          ],
          "source": "PBDB"
        },
        {
          "value": "Lepidotus Beds",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Lourinhã",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (3 records)."
          ],
          "source": "PBDB"
        },
        {
          "value": "Morrison Formation",
          "level": "high",
          "basis": "corroborated",
          "reasons": [
            "NHM and PBDB both record it."
          ]
        }
      ]
    }
  },
  "gaps": {
    "missing": [
      {
        "field": "type_species",
        "label": "Type species",
        "note": "No source we use gives this yet."
      },
      {
        "field": "family",
        "label": "Family",
        "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"
      },
      {
        "field": "diet",
        "label": "Diet",
        "source": "PBDB"
      }
    ],
    "disputed": [],
    "withheld": [
      {
        "records": "occurrences",
        "status": "tentative",
        "count": 10,
        "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": "Morrison",
      "same_as": "Morrison Formation",
      "status": "automatic",
      "ruling": null
    }
  ],
  "credits": {
    "genus": "Allosaurus",
    "scope": "confirmed matches only",
    "data_sources": [
      {
        "values": 10793,
        "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": 39,
        "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": 38,
        "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": 137,
        "title": "File:Allosaurus Juvenile Reconstruction.jpg",
        "category": "Taxon image",
        "url": "https://upload.wikimedia.org/wikipedia/commons/6/6b/Allosaurus_Juvenile_Reconstruction.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original",
        "page_url": "https://commons.wikimedia.org/wiki/File:Allosaurus_Juvenile_Reconstruction.jpg",
        "source": "commons",
        "rights_holder": "Fred Wierum",
        "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": "Fred Wierum (Own work), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Allosaurus_Juvenile_Reconstruction.jpg)"
      },
      {
        "media_id": 138,
        "title": "File:Allosaurus SDNHM.jpg",
        "category": "Taxon image",
        "url": "https://upload.wikimedia.org/wikipedia/commons/3/3a/Allosaurus_SDNHM.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original",
        "page_url": "https://commons.wikimedia.org/wiki/File:Allosaurus_SDNHM.jpg",
        "source": "commons",
        "rights_holder": "No machine-readable author provided. Sheep81~commonswiki assumed (based on copyright claims).",
        "catalog_number": null,
        "license_id": "PD-SELF",
        "license_name": "Public domain (released by the author, Wikimedia Commons)",
        "license_url": "https://commons.wikimedia.org/wiki/Template:PD-self",
        "requires_attribution": false,
        "share_alike": false,
        "attribution": "No machine-readable author provided. Sheep81~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:Allosaurus_SDNHM.jpg)"
      },
      {
        "media_id": 139,
        "title": "File:Allosaurus atrox (theropod dinosaur) (Morrison Formation, Upper Jurassic; Carnegie Quarry, Dinosaur National Monument, Utah, USA) 6 (48691922246).jpg",
        "category": "Taxon image",
        "url": "https://upload.wikimedia.org/wikipedia/commons/9/9b/Allosaurus_atrox_%28theropod_dinosaur%29_%28Morrison_Formation%2C_Upper_Jurassic%3B_Carnegie_Quarry%2C_Dinosaur_National_Monument%2C_Utah%2C_USA%29_6_%2848691922246%29.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original",
        "page_url": "https://commons.wikimedia.org/wiki/File:Allosaurus_atrox_(theropod_dinosaur)_(Morrison_Formation,_Upper_Jurassic;_Carnegie_Quarry,_Dinosaur_National_Monument,_Utah,_USA)_6_(48691922246).jpg",
        "source": "commons",
        "rights_holder": "James St. John",
        "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": "James St. John (Allosaurus atrox (theropod dinosaur) (Morrison Formation, Upper Jurassic; Carnegie Quarry, Dinosaur National Monument, Utah, USA) 6), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Allosaurus_atrox_(theropod_dinosaur)_(Morrison_Formation,_Upper_Jurassic;_Carnegie_Quarry,_Dinosaur_National_Monument,_Utah,_USA)_6_(48691922246).jpg)"
      },
      {
        "media_id": 140,
        "title": "File:Allosaurus jimmadseni skeletal.png",
        "category": "Taxon image",
        "url": "https://upload.wikimedia.org/wikipedia/commons/2/29/Allosaurus_jimmadseni_skeletal.png?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original",
        "page_url": "https://commons.wikimedia.org/wiki/File:Allosaurus_jimmadseni_skeletal.png",
        "source": "commons",
        "rights_holder": "Artwork by Scott Hartman, published by Daniel J. Chure, Mark A. Loewen",
        "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": "Artwork by Scott Hartman, published by Daniel J. Chure, Mark A. Loewen (https://peerj.com/articles/7803/), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Allosaurus_jimmadseni_skeletal.png)"
      },
      {
        "media_id": 135,
        "title": "Metadata for PV R 12153 from dinosaur gallery label",
        "category": "Label",
        "url": "https://data.nhm.ac.uk/media/9c1df049-3230-4b99-a5f5-a0e621b3c601",
        "page_url": null,
        "source": "nhm",
        "rights_holder": "The Trustees of the Natural History Museum, London",
        "catalog_number": "PV R 12153",
        "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/9c1df049-3230-4b99-a5f5-a0e621b3c601)"
      },
      {
        "media_id": 134,
        "title": "NHMUK PV R 12153",
        "category": "Specimen",
        "url": "https://data.nhm.ac.uk/media/e37619d4-dc61-42f2-9c76-8267d1345edd",
        "page_url": null,
        "source": "nhm",
        "rights_holder": "The Trustees of the Natural History Museum, London",
        "catalog_number": "PV R 12153",
        "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/e37619d4-dc61-42f2-9c76-8267d1345edd)"
      },
      {
        "media_id": 136,
        "title": "NHMUK PV R 12153 Allosaurus fragilis in gallery from front",
        "category": "Specimen",
        "url": "https://data.nhm.ac.uk/media/41fe7794-4fc7-4c98-9cb0-80457b24fa7b",
        "page_url": null,
        "source": "nhm",
        "rights_holder": "The Trustees of the Natural History Museum, London",
        "catalog_number": "PV R 12153",
        "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/41fe7794-4fc7-4c98-9cb0-80457b24fa7b)"
      }
    ],
    "derived_ages": {
      "specimens": 1,
      "ics_version": "v2024/12"
    },
    "references": 378
  },
  "credits_markdown": "## Allosaurus: 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, 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 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 (7)\n- “File:Allosaurus Juvenile Reconstruction.jpg” (Taxon image): Fred Wierum (Own work), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Allosaurus_Juvenile_Reconstruction.jpg). [Creative Commons Attribution-ShareAlike 4.0](https://creativecommons.org/licenses/by-sa/4.0/). Shown unmodified (share-alike licence).\n- “File:Allosaurus SDNHM.jpg” (Taxon image): No machine-readable author provided. Sheep81~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:Allosaurus_SDNHM.jpg). [Public domain (released by the author, Wikimedia Commons)](https://commons.wikimedia.org/wiki/Template:PD-self).\n- “File:Allosaurus atrox (theropod dinosaur) (Morrison Formation, Upper Jurassic; Carnegie Quarry, Dinosaur National Monument, Utah, USA) 6 (48691922246).jpg” (Taxon image): James St. John (Allosaurus atrox (theropod dinosaur) (Morrison Formation, Upper Jurassic; Carnegie Quarry, Dinosaur National Monument, Utah, USA) 6), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Allosaurus_atrox_(theropod_dinosaur)_(Morrison_Formation,_Upper_Jurassic;_Carnegie_Quarry,_Dinosaur_National_Monument,_Utah,_USA)_6_(48691922246).jpg). [Creative Commons Attribution 2.0](https://creativecommons.org/licenses/by/2.0/).\n- “File:Allosaurus jimmadseni skeletal.png” (Taxon image): Artwork by Scott Hartman, published by Daniel J. Chure, Mark A. Loewen (https://peerj.com/articles/7803/), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Allosaurus_jimmadseni_skeletal.png). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “Metadata for PV R 12153 from dinosaur gallery label” (specimen PV R 12153): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/9c1df049-3230-4b99-a5f5-a0e621b3c601). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHMUK PV R 12153” (specimen PV R 12153): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/e37619d4-dc61-42f2-9c76-8267d1345edd). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHMUK PV R 12153 Allosaurus fragilis in gallery from front” (specimen PV R 12153): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/41fe7794-4fc7-4c98-9cb0-80457b24fa7b). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n\n### Scientific references\n\n378 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": "38590",
      "url": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38590"
    },
    {
      "scheme": "enwiki",
      "name": "Wikipedia (English)",
      "id": "Allosaurus",
      "url": "https://en.wikipedia.org/wiki/Allosaurus"
    },
    {
      "scheme": "gbif",
      "name": "GBIF",
      "id": "4822587",
      "url": "https://www.gbif.org/species/4822587"
    },
    {
      "scheme": "wikidata",
      "name": "Wikidata",
      "id": "Q14400",
      "url": "https://www.wikidata.org/wiki/Q14400"
    }
  ],
  "other_names": {
    "species": [
      "Allosaurus anax",
      "Allosaurus europaeus",
      "Allosaurus ferox",
      "Allosaurus fragilis",
      "Allosaurus jimmadseni",
      "Allosaurus jimmadsoni",
      "Allosaurus lucaris",
      "Allosaurus lucasi"
    ],
    "synonyms": [
      {
        "name": "Antrodemus",
        "status": "subjective synonym of",
        "authority": "Leidy 1873"
      },
      {
        "name": "Apatodon",
        "status": "subjective synonym of",
        "authority": "Marsh 1877"
      },
      {
        "name": "Creosaurus",
        "status": "subjective synonym of",
        "authority": "Marsh 1878"
      },
      {
        "name": "Epanterias",
        "status": "subjective synonym of",
        "authority": "Cope 1878"
      },
      {
        "name": "Labrosaurus",
        "status": "subjective synonym of",
        "authority": "Marsh 1879"
      },
      {
        "name": "Saurophagus",
        "status": "subjective synonym of",
        "authority": "Ray 1941"
      }
    ]
  },
  "original_description": {
    "citation": "O. C. Marsh (1877). Notice of new dinosaurian reptiles from the Jurassic formation. American Journal of Science and Arts 14: 514–516.",
    "authors": "O. C. Marsh",
    "year": 1877,
    "title": "Notice of new dinosaurian reptiles from the Jurassic formation",
    "publication": "American Journal of Science and Arts",
    "volume": "14",
    "issue": null,
    "pages": "514–516",
    "doi": "10.2475/ajs.s3-14.84.514",
    "url": "https://doi.org/10.2475/ajs.s3-14.84.514",
    "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 1877), on which PBDB and Wikidata agree."
      ]
    },
    "source": "pbdb",
    "source_name": "Paleobiology Database",
    "license_id": "CC-BY-4.0",
    "pbdb_reference_no": "7811"
  },
  "summary": "Omnisaura summary: Allosaurus, Marsh 1877\n\n- Named by: Marsh 1877 (high confidence: PBDB and Wikidata agree).\n- Order: Saurischia (medium confidence: only NHM gives this; nothing contradicts it).\n- Parent group: Allosauroidea (medium confidence: only PBDB gives this; nothing contradicts it).\n- Age, as published by the Paleobiology Database: Oxfordian to Berriasian, 161.5–137.05 million years ago (high confidence: PBDB and NHM agree).\n- Age, Omnisaura's own calculation (not a published figure): 161.5–143.1 million years ago (medium confidence: Omnisaura's calculation from 137 confirmed PBDB records).\n- Fossils found in: United States (high: NHM and PBDB both record it); Portugal (medium: only PBDB records it (8 records)); Germany (low: only one PBDB record).\n- Rock formations: Morrison Formation (high: NHM and PBDB both record it); Alcobaça (medium: only PBDB records it (5 records)); Lourinhã (medium: only PBDB records it (3 records)); Lepidotus Beds (low: only one PBDB record).\n- Original description: O. C. Marsh (1877). Notice of new dinosaurian reptiles from the Jurassic formation. American Journal of Science and Arts 14: 514–516. https://doi.org/10.2475/ajs.s3-14.84.514 (high confidence: PBDB gives this publication for the name; its author and year match the naming authority (Marsh 1877), 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 Theropoda, the group this genus belongs to, not from this genus's own fossils).\n- Way of life, inferred by PBDB for the group: ground dwelling, solitary (low confidence: PBDB infers this way of life for the whole of Theropoda; behaviour is rarely known for one genus).\n- Common names: Allosaure, アロサウルス, 異特龍屬 (medium confidence: only Wikidata gives this; nothing contradicts it).\n\nNot known or disputed:\n- Type species: no source Omnisaura uses gives this.\n- Family: no source Omnisaura uses gives this.\n- Named after: no source Omnisaura uses gives this.\n- 10 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)."
}