{
  "schema": "omnisaura.snapshot/v2",
  "uid": "omnisaura:profile:dryosaurus",
  "genus": "Dryosaurus",
  "generated_at": "2026-10-12T10:16:43Z",
  "raw_run": "2026-10-12",
  "profile": {
    "name": {
      "value": "Dryosaurus",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "authority": {
      "value": "Marsh 1894",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "type_species": {
      "value": null,
      "rule": null,
      "rule_id": null,
      "synthesis": false,
      "sources": []
    },
    "order": {
      "value": null,
      "rule": null,
      "rule_id": null,
      "synthesis": false,
      "sources": []
    },
    "family": {
      "value": "Dryosauridae",
      "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": "Dryosauridae",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "headline": {
      "value": [
        154.8,
        143.1,
        "Kimmeridgian",
        "Tithonian"
      ],
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "evidence": {
      "value": [
        154.8,
        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": [
        "FR",
        "TZ",
        "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": [
        "Marnes de Bléville",
        "Morrison Formation",
        "Tendaguru 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"
        }
      ]
    },
    "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": "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."
      ]
    },
    "headline": {
      "level": "high",
      "basis": "corroborated",
      "reasons": [
        "PBDB and NHM agree."
      ]
    },
    "evidence": {
      "level": "medium",
      "basis": "synthesis",
      "reasons": [
        "Omnisaura's calculation from 20 confirmed PBDB records."
      ]
    },
    "countries": {
      "level": "mixed",
      "basis": "items",
      "reasons": [
        "Entries differ; see each entry."
      ],
      "items": [
        {
          "value": "FR",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "TZ",
          "level": "low",
          "basis": "disputed",
          "reasons": [
            "NHM records it here but PBDB has no record in this country; awaiting an editor."
          ]
        },
        {
          "value": "US",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (19 records)."
          ],
          "source": "PBDB"
        }
      ]
    },
    "formations": {
      "level": "mixed",
      "basis": "items",
      "reasons": [
        "Entries differ; see each entry."
      ],
      "items": [
        {
          "value": "Marnes de Bléville",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Morrison Formation",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (19 records)."
          ],
          "source": "PBDB"
        },
        {
          "value": "Tendaguru Formation",
          "level": "low",
          "basis": "disputed",
          "reasons": [
            "Only NHM gives this name and it matches no PBDB formation; awaiting an editor."
          ]
        }
      ]
    }
  },
  "gaps": {
    "missing": [
      {
        "field": "type_species",
        "label": "Type species",
        "note": "No source we use gives this yet."
      },
      {
        "field": "order",
        "label": "Order",
        "note": "No source we use gives this yet."
      },
      {
        "field": "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": "authority",
        "label": "Authority",
        "source": "PBDB"
      },
      {
        "field": "parent_name",
        "label": "Parent group",
        "source": "PBDB"
      }
    ],
    "disputed": [
      {
        "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": "Tendaguru Beds"
          }
        ]
      },
      {
        "field": "countries",
        "label": "Countries",
        "note": "One source records a country the other does not.",
        "values": [
          {
            "source": "PBDB",
            "source_id": "pbdb",
            "value": "FR, US"
          },
          {
            "source": "NHM",
            "source_id": "nhm",
            "value": "Tanzania"
          }
        ]
      }
    ],
    "withheld": [
      {
        "records": "occurrences",
        "status": "tentative",
        "count": 4,
        "reason": "PBDB fossil records identified only tentatively (for example 'cf.' or '?')"
      },
      {
        "records": "specimens",
        "status": "related_other_genus",
        "count": 3,
        "reason": "NHM specimens identified as a related genus"
      }
    ]
  },
  "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
    },
    {
      "name": "Tendaguru Beds",
      "same_as": "Tendaguru Formation",
      "status": "automatic",
      "ruling": null
    }
  ],
  "credits": {
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    "scope": "confirmed matches only",
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        "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.",
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        "homepage": "https://paleobiodb.org"
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        "homepage": "https://data.nhm.ac.uk"
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    "images": [
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    "references": 139
  },
  "credits_markdown": "## Dryosaurus: 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 4 October 2026, 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 74 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 (11)\n- “File:Beneski Museum of Natural History Dryosaurus altus.jpg” (Taxon image): Richard Haddad (https://www.flickr.com/photos/144256575@N08/31065095776/), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Beneski_Museum_of_Natural_History_Dryosaurus_altus.jpg). [Creative Commons Attribution 2.0](https://creativecommons.org/licenses/by/2.0/).\n- “File:Ceratosaurus & Dryosaurus.jpg” (Taxon image): Kordite (Originally uploaded to Flickr as Dryosaurus and Ceratosaurus.), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Ceratosaurus_%26_Dryosaurus.jpg). [Creative Commons Attribution 2.0](https://creativecommons.org/licenses/by/2.0/).\n- “File:Dryosaurus NT.jpg” (Taxon image): Nobu Tamura (nobu.tamura@yahoo.com) (https://spinops.blogspot.com/2012/06/dryosaurus-altus.html), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Dryosaurus_NT.jpg). [Creative Commons Attribution-ShareAlike 4.0](https://creativecommons.org/licenses/by-sa/4.0/). Shown unmodified (share-alike licence).\n- “File:Dryosaurus elderae (ornithopod dinosaur skull) (Morrison Formation, Upper Jurassic; Carnegie Quarry, Dinosaur National Monument, Utah, USA) 2 (48695847672).jpg” (Taxon image): James St. John (Dryosaurus elderae (ornithopod dinosaur skull) (Morrison Formation, Upper Jurassic; Carnegie Quarry, Dinosaur National Monument, Utah, USA) 2), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Dryosaurus_elderae_(ornithopod_dinosaur_skull)_(Morrison_Formation,_Upper_Jurassic;_Carnegie_Quarry,_Dinosaur_National_Monument,_Utah,_USA)_2_(48695847672).jpg). [Creative Commons Attribution 2.0](https://creativecommons.org/licenses/by/2.0/).\n- “File:DryosaurusNV.jpg” (Taxon image): Foolp (Own work), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:DryosaurusNV.jpg). [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_23_0083” (specimen PV R 5554): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/b57a4768-3bd5-466a-8a84-b63cf145eba4). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_23_0087” (specimen PV R 5570): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/d66c1035-a31e-41fa-9d51-42f9c27f74e9). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_23_0089” (specimen PV R 5577): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/bb0ab7ac-3826-44d8-b33e-27f880de1a00). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_23_0391” (specimen PV R 6861): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/6b6166cd-8d1e-47fb-bfb8-ad343486c973). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_24_0185” (specimen PV R 8350): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/cd81c7e4-538a-4cfd-9846-a719c1595eca). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_24_0187” (specimen PV R 8351): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/4983efc0-a494-4af3-bbdd-1f752d92f852). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n\n### Scientific references\n\n139 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": "O. C. Marsh (1894). The typical Ornithopoda of the American Jurassic. American Journal of Science, series 3 48: 85–90.",
    "authors": "O. C. Marsh",
    "year": 1894,
    "title": "The typical Ornithopoda of the American Jurassic",
    "publication": "American Journal of Science, series 3",
    "volume": "48",
    "issue": null,
    "pages": "85–90",
    "doi": "10.2475/ajs.s3-48.283.85",
    "url": "https://doi.org/10.2475/ajs.s3-48.283.85",
    "what": "The publication the Paleobiology Database gives as the authority for this genus name, usually the one that first named and described it.",
    "confidence": {
      "level": "medium",
      "reasons": [
        "Only PBDB gives this; its author and year match the naming authority (Marsh 1894)."
      ]
    },
    "source": "pbdb",
    "source_name": "Paleobiology Database",
    "license_id": "CC-BY-4.0",
    "pbdb_reference_no": "9097"
  },
  "summary": "Omnisaura summary: Dryosaurus, Marsh 1894\n\n- Named by: Marsh 1894 (medium confidence: only PBDB gives this; nothing contradicts it).\n- Family: Dryosauridae (high confidence: PBDB and NHM agree).\n- Parent group: Dryosauridae (medium confidence: only PBDB gives this; nothing contradicts it).\n- Age, as published by the Paleobiology Database: Kimmeridgian to Tithonian, 154.8–143.1 million years ago (high confidence: PBDB and NHM agree).\n- Age, Omnisaura's own calculation (not a published figure): 154.8–143.1 million years ago (medium confidence: Omnisaura's calculation from 20 confirmed PBDB records).\n- Fossils found in: United States (medium: only PBDB records it (19 records)); France (low: only one PBDB record); Tanzania (low: NHM records it here but PBDB has no record in this country; awaiting an editor).\n- Rock formations: Morrison Formation (medium: only PBDB records it (19 records)); Marnes de Bléville (low: only one PBDB record); Tendaguru Formation (low: only NHM gives this name and it matches no PBDB formation; awaiting an editor).\n- Original description: O. C. Marsh (1894). The typical Ornithopoda of the American Jurassic. American Journal of Science, series 3 48: 85–90. https://doi.org/10.2475/ajs.s3-48.283.85 (medium confidence: only PBDB gives this; its author and year match the naming authority (Marsh 1894)).\n\nNot known or disputed:\n- Formations: sources disagree (NHM says Tendaguru Beds). Awaiting an Omnisaura editor.\n- Countries: sources disagree (PBDB says FR, US; NHM says Tanzania). Awaiting an Omnisaura editor.\n- Type species: no source Omnisaura uses gives this.\n- Order: 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- 7 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); Paleobiology Database (CC-BY-4.0); Wikidata (CC0-1.0)."
}