{
  "schema": "omnisaura.snapshot/v2",
  "uid": "omnisaura:profile:megalosauropus",
  "genus": "Megalosauropus",
  "generated_at": "2026-10-12T10:16:43Z",
  "raw_run": "2026-10-12",
  "profile": {
    "name": {
      "value": "Megalosauropus",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "authority": {
      "value": "Kaever and Lapparent 1974",
      "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": "Eubrontidae",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "parent_name": {
      "value": "Eubrontidae",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "headline": {
      "value": [
        201.4,
        143.1,
        "Hettangian",
        "Tithonian"
      ],
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "evidence": {
      "value": [
        154.8,
        100.5
      ],
      "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": [
        "AU",
        "DZ",
        "PT",
        "US"
      ],
      "rule": "Union of all sources (ISO 3166)",
      "rule_id": "merge:union_iso3166",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "formations": {
      "value": [
        "Broome Sandstone",
        "Camadas de Almargem",
        "Continental Intercalaire",
        "Patuxent",
        "Tiloula"
      ],
      "rule": "Canonical names, automatic and editor-approved matches applied",
      "rule_id": "merge:canonical_formations",
      "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": "medium",
      "basis": "single_source",
      "reasons": [
        "Only PBDB gives this; nothing contradicts it."
      ],
      "source": "PBDB"
    },
    "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": "medium",
      "basis": "single_source",
      "reasons": [
        "Only PBDB gives this; nothing contradicts it."
      ],
      "source": "PBDB"
    },
    "headline": {
      "level": "low",
      "basis": "disputed",
      "reasons": [
        "Sources disagree and an editor has not ruled yet."
      ]
    },
    "evidence": {
      "level": "medium",
      "basis": "synthesis",
      "reasons": [
        "Omnisaura's calculation from 14 confirmed PBDB records."
      ]
    },
    "countries": {
      "level": "mixed",
      "basis": "items",
      "reasons": [
        "Entries differ; see each entry."
      ],
      "items": [
        {
          "value": "AU",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (6 records)."
          ],
          "source": "PBDB"
        },
        {
          "value": "DZ",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (5 records)."
          ],
          "source": "PBDB"
        },
        {
          "value": "PT",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "US",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        }
      ]
    },
    "formations": {
      "level": "mixed",
      "basis": "items",
      "reasons": [
        "Entries differ; see each entry."
      ],
      "items": [
        {
          "value": "Broome Sandstone",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (6 records)."
          ],
          "source": "PBDB"
        },
        {
          "value": "Camadas de Almargem",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Continental Intercalaire",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Patuxent",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Tiloula",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (2 records)."
          ],
          "source": "PBDB"
        }
      ]
    }
  },
  "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": "name",
        "label": "Name",
        "source": "PBDB"
      },
      {
        "field": "authority",
        "label": "Authority",
        "source": "PBDB"
      },
      {
        "field": "parent_name",
        "label": "Parent group",
        "source": "PBDB"
      },
      {
        "field": "family",
        "label": "Family",
        "source": "PBDB"
      }
    ],
    "disputed": [
      {
        "field": "headline",
        "label": "Age",
        "note": "The ages of the records reach well beyond the published range.",
        "values": [
          {
            "source": "PBDB",
            "source_id": "pbdb",
            "value": "201.4–143.1 Ma"
          },
          {
            "source": "PBDB's own confirmed records",
            "source_id": "pbdb",
            "value": "154.8–100.5 Ma"
          }
        ]
      }
    ],
    "withheld": [
      {
        "records": "occurrences",
        "status": "related_other_genus",
        "count": 65,
        "reason": "occurrences with status related_other_genus"
      },
      {
        "records": "occurrences",
        "status": "tentative",
        "count": 1,
        "reason": "PBDB fossil records identified only tentatively (for example 'cf.' or '?')"
      }
    ]
  },
  "assessment": {
    "levels": {
      "high": "Two independent sources agree, or an editor has ruled.",
      "medium": "One source; nothing contradicts it.",
      "low": "Sources disagree and no editor has ruled yet, or too few records."
    },
    "by": "Omnisaura",
    "license_id": "OMNISAURA-EDITORIAL"
  },
  "formation_matches": [],
  "credits": {
    "genus": "Megalosauropus",
    "scope": "confirmed matches only",
    "data_sources": [
      {
        "values": 2047,
        "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"
      }
    ],
    "images": [],
    "derived_ages": null,
    "references": 94
  },
  "credits_markdown": "## Megalosauropus: 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\n### Images (0)\n_No images._\n\n### Scientific references\n\n94 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": "trace",
  "original_description": {
    "citation": "M. Kaever, A. F. d. Lapparent (1974). Les traces de pas de Dinosaures du Jurassique de Barkhausen (Basse Saxe, Allemagne) [Dinosaur footprints from the Jurassic of Barkhausen (Lower Saxony, Germany)]. Bulletin de la Société Géologique de France, 7e série 16(5): 516–525.",
    "authors": "M. Kaever, A. F. d. Lapparent",
    "year": 1974,
    "title": "Les traces de pas de Dinosaures du Jurassique de Barkhausen (Basse Saxe, Allemagne) [Dinosaur footprints from the Jurassic of Barkhausen (Lower Saxony, Germany)]",
    "publication": "Bulletin de la Société Géologique de France, 7e série",
    "volume": "16",
    "issue": "5",
    "pages": "516–525",
    "doi": "10.2113/gssgfbull.s7-xvi.5.516",
    "url": "https://doi.org/10.2113/gssgfbull.s7-xvi.5.516",
    "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 (Kaever and Lapparent 1974)."
      ]
    },
    "source": "pbdb",
    "source_name": "Paleobiology Database",
    "license_id": "CC-BY-4.0",
    "pbdb_reference_no": "38671"
  },
  "summary": "Omnisaura summary: Megalosauropus, Kaever and Lapparent 1974\n\n- What it is: Known only from footprints or other traces: the name is for the traces themselves (an ichnogenus), and which dinosaur made them is usually not known for certain.\n- Named by: Kaever and Lapparent 1974 (medium confidence: only PBDB gives this; nothing contradicts it).\n- Family: Eubrontidae (medium confidence: only PBDB gives this; nothing contradicts it).\n- Parent group: Eubrontidae (medium confidence: only PBDB gives this; nothing contradicts it).\n- Age, as published by the Paleobiology Database: Hettangian to Tithonian, 201.4–143.1 million years ago (low confidence: sources disagree and an editor has not ruled yet).\n- Age, Omnisaura's own calculation (not a published figure): 154.8–100.5 million years ago (medium confidence: Omnisaura's calculation from 14 confirmed PBDB records).\n- Fossils found in: Australia (medium: only PBDB records it (6 records)); Algeria (medium: only PBDB records it (5 records)); Portugal (low: only one PBDB record); United States (low: only one PBDB record).\n- Rock formations: Broome Sandstone (medium: only PBDB records it (6 records)); Tiloula (medium: only PBDB records it (2 records)); Camadas de Almargem (low: only one PBDB record); Continental Intercalaire (low: only one PBDB record); Patuxent (low: only one PBDB record).\n- Original description: M. Kaever, A. F. d. Lapparent (1974). Les traces de pas de Dinosaures du Jurassique de Barkhausen (Basse Saxe, Allemagne) [Dinosaur footprints from the Jurassic of Barkhausen (Lower Saxony, Germany)]. Bulletin de la Société Géologique de France, 7e série 16(5): 516–525. https://doi.org/10.2113/gssgfbull.s7-xvi.5.516 (medium confidence: only PBDB gives this; its author and year match the naming authority (Kaever and Lapparent 1974)).\n\nNot known or disputed:\n- Age: sources disagree (PBDB says 201.4–143.1 Ma; PBDB's own confirmed records says 154.8–100.5 Ma). 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- 66 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): Paleobiology Database (CC-BY-4.0)."
}