{
  "schema": "omnisaura.snapshot/v2",
  "uid": "omnisaura:profile:polacanthus",
  "genus": "Polacanthus",
  "generated_at": "2026-10-12T10:16:43Z",
  "raw_run": "2026-10-12",
  "profile": {
    "name": {
      "value": "Polacanthus",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "authority": {
      "value": "Fox 1866",
      "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": "Nodosauridae",
      "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": "Nodosauridae",
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "headline": {
      "value": [
        139.1,
        100.5,
        "Berriasian",
        "Albian"
      ],
      "rule": "PBDB leads",
      "rule_id": "merge:lead_pbdb",
      "synthesis": false,
      "sources": [
        {
          "source": "pbdb",
          "license": "CC-BY-4.0"
        }
      ]
    },
    "evidence": {
      "value": [
        139.1,
        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": [
        "ES",
        "GB"
      ],
      "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": [
        "Arcillas de Morella",
        "Ferruginous Sands",
        "Golmayo",
        "Piedrahita de Muñó",
        "Tunbridge Wells Sand Formation",
        "Upper Greensand Formation",
        "Vectis Formation",
        "Wadhurst Clay Formation",
        "Wessex 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 13 confirmed PBDB records."
      ]
    },
    "countries": {
      "level": "mixed",
      "basis": "items",
      "reasons": [
        "Entries differ; see each entry."
      ],
      "items": [
        {
          "value": "ES",
          "level": "medium",
          "basis": "single_source",
          "reasons": [
            "Only PBDB records it (3 records)."
          ],
          "source": "PBDB"
        },
        {
          "value": "GB",
          "level": "high",
          "basis": "corroborated",
          "reasons": [
            "NHM and PBDB both record it."
          ]
        }
      ]
    },
    "formations": {
      "level": "mixed",
      "basis": "items",
      "reasons": [
        "Entries differ; see each entry."
      ],
      "items": [
        {
          "value": "Arcillas de Morella",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Ferruginous Sands",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Golmayo",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Piedrahita de Muñó",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Tunbridge Wells Sand Formation",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Upper Greensand Formation",
          "level": "low",
          "basis": "disputed",
          "reasons": [
            "Only NHM gives this name and it matches no PBDB formation; awaiting an editor."
          ]
        },
        {
          "value": "Vectis Formation",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Wadhurst Clay Formation",
          "level": "low",
          "basis": "thin",
          "reasons": [
            "Only one PBDB record."
          ]
        },
        {
          "value": "Wessex 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": "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": "Upper Greensand Formation"
          }
        ]
      }
    ],
    "withheld": [
      {
        "records": "occurrences",
        "status": "tentative",
        "count": 3,
        "reason": "PBDB fossil records identified only tentatively (for example 'cf.' or '?')"
      },
      {
        "records": "specimens",
        "status": "higher_rank_only",
        "count": 4,
        "reason": "NHM specimens identified only to a broader group, not to this 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": "Tunbridge Wells Sand",
      "same_as": "Tunbridge Wells Sand Formation",
      "status": "automatic",
      "ruling": null
    },
    {
      "name": "Vectis",
      "same_as": "Vectis Formation",
      "status": "automatic",
      "ruling": null
    },
    {
      "name": "Wadhurst Clay",
      "same_as": "Wadhurst Clay Formation",
      "status": "automatic",
      "ruling": null
    },
    {
      "name": "Wessex",
      "same_as": "Wessex Formation",
      "status": "automatic",
      "ruling": null
    }
  ],
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    "scope": "confirmed matches only",
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        "requires_attribution": true,
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        "homepage": "https://data.nhm.ac.uk"
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    ],
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    "references": 127
  },
  "credits_markdown": "## Polacanthus: 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 18 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 (38)\n- “File:Polacanthus Pelvis.jpg” (Taxon image): Carpenter, Kenneth (Own work), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Polacanthus_Pelvis.jpg). [Creative Commons Attribution-ShareAlike 4.0](https://creativecommons.org/licenses/by-sa/4.0/). Shown unmodified (share-alike licence).\n- “File:Polacanthus foxii.jpg” (Taxon image): FunkMonk, hip armour by Franz Nopcsa von Felső-SzilvásFile:Polacanthus skeleton.jpg (Own work), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Polacanthus_foxii.jpg). [Creative Commons Attribution-ShareAlike 3.0](https://creativecommons.org/licenses/by-sa/3.0/). Shown unmodified (share-alike licence).\n- “File:Polcanthus material.jpg” (Taxon image): Carpenter, Kenneth (Own work), via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Polcanthus_material.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_04_0421” (specimen PV OR 36515): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/4eafbaed-a483-40a3-b89f-5378358485cf). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_04_0421” (specimen PV OR 36516): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/4eafbaed-a483-40a3-b89f-5378358485cf). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_04_0421” (specimen PV OR 36517): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/4eafbaed-a483-40a3-b89f-5378358485cf). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_05_0033” (specimen PV OR 37714): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/8e9a93c8-1ca3-4d14-a41b-4b7cbf5babec). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_05_0121” (specimen PV OR 39553): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/a7a67230-c989-41be-88d3-5d70d368bc48). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_05_0121” (specimen PV OR 39556): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/a7a67230-c989-41be-88d3-5d70d368bc48). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_21_0035” (specimen PV R 175): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/b57463d2-246f-499f-98e0-93b0b29d7f8c). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_21_0039” (specimen PV R 202): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/c8b2b3ab-49d6-4af6-b339-6af559ba64ae). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_21_0041” (specimen PV R 203): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/e9600d9e-a438-48c6-8d85-35a80171bb82). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_21_0491” (specimen PV R 2527): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/02e9ad01-38e4-4b8b-90db-b04447aac6d0). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_22_0309” (specimen PV R 4134): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/0a48ffb4-aba5-46a6-9de1-6b1c379bae11). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_22_0475” (specimen PV R 4951): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/d1370835-2654-47c1-9c5c-a93d6bc5c67d). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_22_0475” (specimen PV R 4952): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/d1370835-2654-47c1-9c5c-a93d6bc5c67d). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “NHM-UK_P_DF118_03_21_0115” (specimen PV R 643): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/5e94c064-269a-48e0-ace3-ceeab7ef5e20). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010024595_L010093635” (specimen PV OR 36515): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/f8dcfb32-5efb-4bdd-9c64-2aa07b6320be). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010024643_L010093635” (specimen PV OR 36516): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/337580d7-31c6-4de1-9184-2cab54a278f0). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010024619_L010093635” (specimen PV OR 36517): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/f2669fca-b044-494e-8a68-8286c3e4e92d). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010024499_L010093635” (specimen PV OR 37714): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/845b86d7-04e2-445e-8f5f-9d9169b3f10a). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010024499_L010093635_(1)” (specimen PV OR 37714): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/c15e053b-82fa-4b4d-a598-0049a8796540). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010033145_L010093469” (specimen PV OR 39553): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/b473ab20-c643-4d60-abd2-67debbcb537b). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010024379_L010093635” (specimen PV OR 39556): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/28133e8c-d77f-4bf5-8cbf-f378dcbcb4f0). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010033739_L010093629” (specimen PV R 12556): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/9f4b76ee-18fe-4cde-a347-43ee9aacae98). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010033904_L010221166” (specimen PV R 15950): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/aa932f1e-6bef-4c5e-ab07-e95a550eb13b). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010033904_L010221166_(1)” (specimen PV R 15950): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/d5089003-5a55-4e8f-9542-599bd36055f9). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010039404_L010093621” (specimen PV R 16484): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/7f904238-9ebe-43e6-a5a5-687e1ffe1cc6). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010039404_L010093621_(1)” (specimen PV R 16484): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/d9a07478-0363-4ebe-b872-e94d50c550cf). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010033451_L010093621” (specimen PV R 16485): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/f345d1ad-1656-47f4-84d0-f5d992017aed). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010033787_L010093635” (specimen PV R 202): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/23caa4f8-cb82-4519-8c7f-4295d069dcc9). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010036427_L010093638” (specimen PV R 203): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/70590523-0274-4e4b-b56a-e83137475f77). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010024547_L010093635” (specimen PV R 2527): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/974c9977-75b4-4161-9f28-2132cd045cfa). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010036403_L010093638” (specimen PV R 4134): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/6a6ee083-875e-4433-a609-b9220020f603). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010036403_L010093638_(1)” (specimen PV R 4134): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/75c4adfd-7bb7-45cf-9fa2-4b2443f40d6e). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010023947_L010093637” (specimen PV R 4951): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/d287b94e-bdf3-4ed0-b886-c802bc9b6e0b). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010036547_L010093648” (specimen PV R 4952): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/b4aa1a88-d7fe-450b-9082-8e90606bd9c8). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n- “010024475_L010093635” (specimen PV R 643): The Trustees of the Natural History Museum, London; via NHM Data Portal (https://data.nhm.ac.uk/media/e58026e6-37ce-43d8-86ea-0a67a90bb605). [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).\n\n### Scientific references\n\n127 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": "W. Fox (1866). On a new Wealden saurian named Polacanthus. Report of the British Association for the Advancement of Science, Birmingham 1865: 56.",
    "authors": "W. Fox",
    "year": 1866,
    "title": "On a new Wealden saurian named Polacanthus",
    "publication": "Report of the British Association for the Advancement of Science, Birmingham",
    "volume": "1865",
    "issue": null,
    "pages": "56",
    "doi": null,
    "url": null,
    "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 (Fox 1866)."
      ]
    },
    "source": "pbdb",
    "source_name": "Paleobiology Database",
    "license_id": "CC-BY-4.0",
    "pbdb_reference_no": "29197"
  },
  "summary": "Omnisaura summary: Polacanthus, Fox 1866\n\n- Named by: Fox 1866 (medium confidence: only PBDB gives this; nothing contradicts it).\n- Family: Nodosauridae (high confidence: PBDB and NHM agree).\n- Parent group: Nodosauridae (medium confidence: only PBDB gives this; nothing contradicts it).\n- Age, as published by the Paleobiology Database: Berriasian to Albian, 139.1–100.5 million years ago (high confidence: PBDB and NHM agree).\n- Age, Omnisaura's own calculation (not a published figure): 139.1–100.5 million years ago (medium confidence: Omnisaura's calculation from 13 confirmed PBDB records).\n- Fossils found in: United Kingdom (high: NHM and PBDB both record it); Spain (medium: only PBDB records it (3 records)).\n- Rock formations: Wessex Formation (high: NHM and PBDB both record it); Arcillas de Morella (low: only one PBDB record); Ferruginous Sands (low: only one PBDB record); Golmayo (low: only one PBDB record); Piedrahita de Muñó (low: only one PBDB record); Tunbridge Wells Sand Formation (low: only one PBDB record); Upper Greensand Formation (low: only NHM gives this name and it matches no PBDB formation; awaiting an editor); Vectis Formation (low: only one PBDB record); Wadhurst Clay Formation (low: only one PBDB record).\n- Original description: W. Fox (1866). On a new Wealden saurian named Polacanthus. Report of the British Association for the Advancement of Science, Birmingham 1865: 56. (medium confidence: only PBDB gives this; its author and year match the naming authority (Fox 1866)).\n\nNot known or disputed:\n- Formations: sources disagree (NHM says Upper Greensand Formation). 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)."
}