{
  "reviewedAt": "2026-10-10",
  "scope": "Seven genera from hypothetical19-member mamenchisaurid Daye leaf; research only",
  "policy": "No edits to shared policy/tree/roster. Row-level review and positive evidence; never infer whole-genus absence from type locality alone.",
  "counts": {
    "genera": 7,
    "frozenOccurrencesExamined": 7,
    "credibleNamedGenusDayeOccurrencesFound": 0
  },
  "sources": {
    "li2011": {
      "title": "Li, Liu, Yang & Hu 2011, Dinosaur assemblages from the Middle Jurassic Shaximiao Formation and Chuanjie Formation in the Sichuan-Yunnan Basin, China",
      "url": "https://vjs.pgi.gov.pl/article/download/26567/18275",
      "access": "Complete 22-page primary review PDF, Upper member assemblage pp.24-25 read",
      "evidence": "Daanosaurus zhangi is listed in the Upper Shaximiao assemblage in Sichuan Basin. It is a review of reported fossils rather than a new occurrence at a new quarry. Older classification is not used to change roster or tree."
    },
    "daan2005": {
      "title": "Ye, Gao & Jiang 2005, A new genus of sauropod from Zigong, Sichuan, Vertebrata PalAsiatica43:175-181",
      "url": "https://www.ivpp.cas.cn/cbw/gjzdwxb/xbwzxz/200810/t20081021_2385423.html",
      "access": "Primary institutional indexed abstract; page failed to open; full original not obtained",
      "evidence": "Primary title and institutional index confirm description from Zigong, Sichuan. Precise Yongan/Yantan locality remains the frozen PBDB capture supported by the later primary regional review at formation level."
    },
    "eoma2008": {
      "title": "Lü et al.2008, A New Mamenchisaurid Dinosaur from the Middle Jurassic of Yuanmou, Yunnan Province, China",
      "url": "https://www.researchgate.net/publication/264682253_A_New_Mamenchisaurid_Dinosaur_from_the_Middle_Jurassic_of_Yuanmou_Yunnan_Province_China",
      "doi": "10.1111/j.1755-6724.2008.tb00320.x",
      "access": "Original article abstract; full text unavailable",
      "evidence": "Incomplete skeleton from Zhanghe Formation, Yuanmou, Yunnan. Exact Banqing Houshanliangzi/Jiangyi quarry wording is from frozen PBDB, not independently verified from full original."
    },
    "nebula2015": {
      "title": "Xing et al.2015, A New Basal Eusauropod from the Middle Jurassic of Yunnan, China, and Faunal Compositions and Transitions of Asian Sauropodomorph Dinosaurs",
      "url": "https://www.app.pan.pl/archive/published/app60/app20120151.pdf",
      "access": "Complete ten-page primary publisher PDF; taxonomic remarks p.150",
      "evidence": "Eomamenchisaurus and Yuanmousaurus are both reported in Zhanghe; their taxonomic distinctions are questioned. It supplies no new Daye locality and is not a roster synonymy decision."
    },
    "tonga2010": {
      "title": "Li, Yang, Liu & Wang2010, A new sauropod from the Lower Jurassic of Huili, Sichuan, China",
      "url": "https://www.researchgate.net/publication/272093896_A_new_sauropod_from_the_Lower_Jurassic_of_Huili_Sichuan_China",
      "publisherUrl": "https://www.vertpala.ac.cn/CN/Y2010/V48/I3/185",
      "access": "Complete journal-uploaded original article text; English summary systematic account read",
      "evidence": "Holotype MCDUT14454; Tong’an in southern Sichuan, Yimen Formation. Tongbao/Huili fine locality and upper-middle formation position are frozen PBDB metadata; the summary confirms town and formation but does not establish the precise within-formation level."
    },
    "huang2014": {
      "title": "Huang, You, Yang & Ren2014, A new sauropod dinosaur from the Middle Jurassic of Huangshan, Anhui Province",
      "url": "https://www.researchgate.net/publication/270571339_A_new_sauropod_dinosaur_from_the_Middle_Jurassic_of_Huangshan_Anhui_Province",
      "publisherUrl": "https://www.vertpala.ac.cn/CN/Y2014/V52/I4/390",
      "access": "Complete author-uploaded original text, introduction and locality/horizon pp.391-392 read",
      "evidence": "AGB5818, Jimushan in Huangshan, Anhui; Hongqin Formation. Introduction locates discovery near Hengguan/Wanzao in Shexian during Huihang highway construction and says fossil-bearing strata are middle-upper Hongqin in Tunxi Basin. Systematic account uses Tunxi District. Exact administrative wording varies within article; preserve rather than silently choose one."
    },
    "anhui2018": {
      "title": "Ren, Huang & You2018 (print2020), The second mamenchisaurid dinosaur from the Middle Jurassic of Eastern China",
      "url": "https://ivpp.cas.cn/sourcedb/zw/klt/kycg/gswxyj/202312/P020231012295567208945.pdf",
      "doi": "10.1080/08912963.2018.1515935",
      "access": "Institutional primary PDF indexed passages (holotype and Locality and horizon) read; direct PDF fetch timed out; original abstract also accessed",
      "evidence": "AGB5822; Jimushan of Hengguan Village, Wangcun Town, Shexian County, Huangshan City, Anhui. Quarry is in lower Hongqin Formation. This differs from Huangshanlong’s reported middle-upper unit; same named hill does not prove same bed."
    },
    "qiji2015": {
      "title": "Xing et al.2015, A new sauropod dinosaur from the Late Jurassic of China and the diversity, distribution, and relationships of mamenchisaurids",
      "url": "https://www.researchgate.net/publication/273489974_A_New_Sauropod_Dinosaur_from_the_Late_Jurassic_of_China_and_the_Diversity_Distribution_and_Relationships_of_Mamenchisaurids",
      "doi": "10.1080/02724634.2014.889701",
      "access": "Complete author-uploaded original article text; systematic locality/horizon account read",
      "evidence": "QJGPM1001, Beidu site, Qijiang District, Chongqing Municipality, Suining Formation. Other named units crop out within park, but are not automatically extra specimen horizons."
    },
    "dai2025": {
      "title": "Dai et al.2025, A new mamenchisaurid sauropod dinosaur from the Upper Jurassic of Southwest China reveals new evolutionary evidence from East Asian eusauropods",
      "url": "https://www.nature.com/articles/s41598-025-29995-z",
      "doi": "10.1038/s41598-025-29995-z",
      "access": "Primary publisher full HTML, Discussion, accessed2026-10-10 (article updated with2026correction)",
      "evidence": "Qijianglong originally from Suining; Zigong Dinosaur Museum surveys reportedly assign material to Upper Shaximiao, explicitly unpublished. Preserve as alternative on same specimen, not a second occurrence."
    },
    "xinjiang2020": {
      "title": "Zhang et al.2020 (online2018), Redescription of the cervical vertebrae of the Mamenchisaurid Sauropod Xinjiangtitan shanshanesis Wu et al.2013",
      "url": "https://www.researchgate.net/publication/328722273_Redescription_of_the_cervical_vertebrae_of_the_Mamenchisaurid_Sauropod_Xinjiangtitan_shanshanesis_Wu_et_al_2013",
      "doi": "10.1080/08912963.2018.1539970",
      "access": "Complete author-uploaded primary article text; introduction read",
      "evidence": "SSV12001 from quarry8km south of Qiketai, Shanshan, Xinjiang. Calls horizon Qigu Formation. Later2014-2015 excavation was additional preparation/exposure of same specimen, not a new locality."
    },
    "xinjiang2024": {
      "title": "Zhang et al.2024 (online2022), Redescription of the dorsal vertebrae of the mamenchisaurid sauropod Xinjiangtitan shanshanesis Wu et al.2013",
      "url": "https://www.tandfonline.com/doi/abs/10.1080/08912963.2022.2147428",
      "doi": "10.1080/08912963.2022.2147428",
      "access": "Primary publisher original abstract",
      "evidence": "Same SSV12001 holotype is called from Qigu Formation of Xinjiang; this conflicts with Qiketai assignment retained in PBDB and Upchurch2021."
    },
    "upchurch2021": {
      "title": "Upchurch et al.2021, Re-assessment of the Late Jurassic eusauropod dinosaur Hudiesaurus sinojapanorum Dong,1997, from the Turpan Basin, China, and the evolution of hyper-robust antebrachia in sauropods",
      "url": "https://discovery.ucl.ac.uk/id/eprint/10135460/7/Mannion_02724634.2021.pdf",
      "doi": "10.1080/02724634.2021.1994414",
      "access": "Complete institutional author manuscript PDF, taxonomic comparisons p.24 read",
      "evidence": "Explicitly places Xinjiangtitan in Qiketai following Maisch & Matzke2019 and Hudiesaurus in overlying Kalazha. Confirms a primary-literature alternative but does not remove conflicting Qigu descriptions."
    },
    "mais2019": {
      "title": "Maisch & Matzke2019, First record of a eusauropod from the Upper Jurassic Qigu-Formation (southern Junggar Basin, China), and a reconsideration of Late Jurassic sauropod diversity in Xinjiang",
      "url": "https://www.researchgate.net/publication/330758512_First_record_of_a_eusauropod_Dinosauria_Sauropoda_from_the_Upper_Jurassic_Qigu-Formation_southern_Junggar_Basin_China_and_a_reconsideration_of_Late_Jurassic_sauropod_diversity_in_Xinjiang",
      "doi": "10.1127/njgpa/2019/0792",
      "access": "Original abstract and author-uploaded figures; full argument not displayed by opened page",
      "evidence": "Liuhuanggou tooth SGP2002/005 is ?Mamenchisauridae gen.etsp.indet., not Xinjiangtitan. Therefore do not add Xinjiangtitan to that Junggar locality from this tooth."
    },
    "tooth2026": {
      "title": "The anatomy of a mamenchisaurid tooth informed by digital reconstruction (2026)",
      "url": "https://www.researchgate.net/publication/403455597_The_anatomy_of_a_mamenchisaurid_tooth_informed_by_digital_reconstruction",
      "access": "Indexed primary systematic account",
      "evidence": "PMOL-ADt0009,8km south of Qiketai, Shanshan, Qigu Formation is Mamenchisauridae indet., not identified as Xinjiangtitan. Same-locality tooth does not establish an extra named-genus occurrence."
    }
  },
  "cases": [
    {
      "genus": "Daanosaurus",
      "pbdbId": "146463",
      "frozenRows": [
        {
          "genusId": "146463",
          "genus": "Daanosaurus",
          "occurrenceId": "811556",
          "collectionId": "89050",
          "identifiedName": "Daanosaurus zhangi n. gen. n. sp.",
          "acceptedName": "Daanosaurus zhangi",
          "qualified": false,
          "occurrenceReferenceId": "29881",
          "collectionReferenceId": "29881",
          "cc": "CN",
          "state": "Sichuan",
          "county": "Zigong",
          "formation": "Shaximiao",
          "member": "Upper",
          "geological_group": "",
          "collection_name": "Yongan, Yantan",
          "collection_aka": "Zigong",
          "geogscale": "small collection",
          "stratscale": "bed",
          "stratcomments": "Upper beds of the Shaximiao Formation",
          "geogcomments": "Yongan, Yantan, near Zigong"
        }
      ],
      "sources": [
        "daan2005",
        "li2011"
      ],
      "recordedProvince": "Sichuan",
      "recordedUnits": [
        {
          "rank": "formation",
          "name": "Shaximiao",
          "member": "Upper"
        }
      ],
      "dayeEvidenceFound": false,
      "additionalNamedGenusLocalitiesFound": [],
      "rowLevelAssessment": "Captured row has known non-Tibetan province and independently reported regional unit. A blank geological_group is not an unknown geographical origin. If the Daye clue is explicitly scoped to Changdu/Tibet, this row can be a nonmatch on geography without inventing its parent group. Unit-only country-wide Daye exclusion still requires Daye scope/hierarchy evidence.",
      "footprintCompleteness": "Every frozen genus-linked row examined (one). Targeted primary literature search found no extra named-genus Daye footprint, but absence from all literature is not proven; new credible or qualified occurrences must be added and retained.",
      "uncertainties": [
        "Full original2005 description not obtained; finer quarry rests on PBDB capture. No current tree/taxonomic override proposed."
      ]
    },
    {
      "genus": "Eomamenchisaurus",
      "pbdbId": "153855",
      "frozenRows": [
        {
          "genusId": "153855",
          "genus": "Eomamenchisaurus",
          "occurrenceId": "826867",
          "collectionId": "64016",
          "identifiedName": "Eomamenchisaurus yuanmouensis n. gen. n. sp.",
          "acceptedName": "Eomamenchisaurus yuanmouensis",
          "qualified": false,
          "occurrenceReferenceId": "30692",
          "collectionReferenceId": "18457",
          "cc": "CN",
          "state": "Yunnan",
          "county": "Yuanmou",
          "formation": "Zhanghe",
          "member": "",
          "geological_group": "",
          "collection_name": "Banqing Houshanliangzi, Jiangyi (Zhanghe Fm.)",
          "collection_aka": "Yuanmou",
          "geogscale": "outcrop",
          "stratscale": "bed",
          "stratcomments": "",
          "geogcomments": "Banqing Houshanliangzi of Jiangyi, N of Yuanmou city, Yuanmou administrative unit (county), Yunnan province"
        }
      ],
      "sources": [
        "eoma2008",
        "nebula2015"
      ],
      "recordedProvince": "Yunnan",
      "recordedUnits": [
        {
          "rank": "formation",
          "name": "Zhanghe",
          "member": ""
        }
      ],
      "dayeEvidenceFound": false,
      "additionalNamedGenusLocalitiesFound": [],
      "rowLevelAssessment": "Captured row has known non-Tibetan province and independently reported regional unit. A blank geological_group is not an unknown geographical origin. If the Daye clue is explicitly scoped to Changdu/Tibet, this row can be a nonmatch on geography without inventing its parent group. Unit-only country-wide Daye exclusion still requires Daye scope/hierarchy evidence.",
      "footprintCompleteness": "Every frozen genus-linked row examined (one). Targeted primary literature search found no extra named-genus Daye footprint, but absence from all literature is not proven; new credible or qualified occurrences must be added and retained.",
      "uncertainties": [
        "Original fulltext not obtained; exact quarry requires independent full account. Taxonomic comparison with Yuanmousaurus unresolved; no merger proposed."
      ]
    },
    {
      "genus": "Tonganosaurus",
      "pbdbId": "171374",
      "frozenRows": [
        {
          "genusId": "171374",
          "genus": "Tonganosaurus",
          "occurrenceId": "887573",
          "collectionId": "74735",
          "identifiedName": "Tonganosaurus hei n. gen. n. sp.",
          "acceptedName": "Tonganosaurus hei",
          "qualified": false,
          "occurrenceReferenceId": "33949",
          "collectionReferenceId": "33949",
          "cc": "CN",
          "state": "Sichuan",
          "county": "Huili",
          "formation": "Yimen",
          "member": "",
          "geological_group": "",
          "collection_name": "Tongbao village, Tong'an",
          "collection_aka": "Tonganosaurus site, Tongan",
          "geogscale": "small collection",
          "stratscale": "bed",
          "stratcomments": "from upper-middle parts of formation",
          "geogcomments": "Tongbao Village, Tong'an (Tongan) Town, Huili County, southern Sichuan"
        }
      ],
      "sources": [
        "tonga2010"
      ],
      "recordedProvince": "Sichuan",
      "recordedUnits": [
        {
          "rank": "formation",
          "name": "Yimen",
          "member": ""
        }
      ],
      "dayeEvidenceFound": false,
      "additionalNamedGenusLocalitiesFound": [],
      "rowLevelAssessment": "Captured row has known non-Tibetan province and independently reported regional unit. A blank geological_group is not an unknown geographical origin. If the Daye clue is explicitly scoped to Changdu/Tibet, this row can be a nonmatch on geography without inventing its parent group. Unit-only country-wide Daye exclusion still requires Daye scope/hierarchy evidence.",
      "footprintCompleteness": "Every frozen genus-linked row examined (one). Targeted primary literature search found no extra named-genus Daye footprint, but absence from all literature is not proven; new credible or qualified occurrences must be added and retained.",
      "uncertainties": [
        "Within-formation position not independently confirmed from English summary; retain PBDB wording without narrowing."
      ]
    },
    {
      "genus": "Xinjiangtitan",
      "pbdbId": "287379",
      "frozenRows": [
        {
          "genusId": "287379",
          "genus": "Xinjiangtitan",
          "occurrenceId": "1190808",
          "collectionId": "153762",
          "identifiedName": "Xinjiangtitan shanshanesis n. gen. n. sp.",
          "acceptedName": "Xinjiangtitan shanshanesis",
          "qualified": false,
          "occurrenceReferenceId": "49813",
          "collectionReferenceId": "49813",
          "cc": "CN",
          "state": "Xinjiang",
          "county": "Piqan",
          "formation": "Qiketai",
          "member": "",
          "geological_group": "",
          "collection_name": "Shanshan, Piqan",
          "collection_aka": "Xinjiangtitan type locality",
          "geogscale": "small collection",
          "stratscale": "bed",
          "stratcomments": "Originally described as from the Qigu Formation by Wu et al. (2013), but Maisch et al. (2019) argued that it is from the Qiketai Formation",
          "geogcomments": "Piqan = Shanshan County, Turpan Basin"
        }
      ],
      "sources": [
        "xinjiang2020",
        "xinjiang2024",
        "upchurch2021",
        "mais2019",
        "tooth2026"
      ],
      "recordedProvince": "Xinjiang",
      "recordedUnits": [
        {
          "rank": "formation",
          "name": "Qiketai",
          "member": ""
        }
      ],
      "dayeEvidenceFound": false,
      "additionalNamedGenusLocalitiesFound": [],
      "rowLevelAssessment": "Captured row has known non-Tibetan province and independently reported regional unit. A blank geological_group is not an unknown geographical origin. If the Daye clue is explicitly scoped to Changdu/Tibet, this row can be a nonmatch on geography without inventing its parent group. Unit-only country-wide Daye exclusion still requires Daye scope/hierarchy evidence.",
      "footprintCompleteness": "Every frozen genus-linked row examined (one). Targeted primary literature search found no extra named-genus Daye footprint, but absence from all literature is not proven; new credible or qualified occurrences must be added and retained.",
      "uncertainties": [
        "Qiketai vs Qigu is a genuine conflicting attribution of the same holotype. Preserve both; PBDB current Qiketai remains unchanged. No tooth identified only at family rank is promoted to this genus."
      ]
    },
    {
      "genus": "Huangshanlong",
      "pbdbId": "309607",
      "frozenRows": [
        {
          "genusId": "309607",
          "genus": "Huangshanlong",
          "occurrenceId": "1244127",
          "collectionId": "163944",
          "identifiedName": "Huangshanlong anhuiensis n. gen. n. sp.",
          "acceptedName": "Huangshanlong anhuiensis",
          "qualified": false,
          "occurrenceReferenceId": "53528",
          "collectionReferenceId": "53528",
          "cc": "CN",
          "state": "Anhui",
          "county": "Huangshan",
          "formation": "Hongqin",
          "member": "",
          "geological_group": "",
          "collection_name": "Shexian, Tunxi",
          "collection_aka": "Huangshanlong anhuiensis type",
          "geogscale": "small collection",
          "stratscale": "bed",
          "stratcomments": "",
          "geogcomments": "Shexian, near Tunxi, Huangshan, Anhui Province"
        }
      ],
      "sources": [
        "huang2014"
      ],
      "recordedProvince": "Anhui",
      "recordedUnits": [
        {
          "rank": "formation",
          "name": "Hongqin",
          "member": ""
        }
      ],
      "dayeEvidenceFound": false,
      "additionalNamedGenusLocalitiesFound": [],
      "rowLevelAssessment": "Captured row has known non-Tibetan province and independently reported regional unit. A blank geological_group is not an unknown geographical origin. If the Daye clue is explicitly scoped to Changdu/Tibet, this row can be a nonmatch on geography without inventing its parent group. Unit-only country-wide Daye exclusion still requires Daye scope/hierarchy evidence.",
      "footprintCompleteness": "Every frozen genus-linked row examined (one). Targeted primary literature search found no extra named-genus Daye footprint, but absence from all literature is not proven; new credible or qualified occurrences must be added and retained.",
      "uncertainties": [
        "Exact administrative labels vary within original, though Anhui/Jimushan/Hongqin secure. Middle-upper part is informal level, not named member."
      ]
    },
    {
      "genus": "Qijianglong",
      "pbdbId": "313709",
      "frozenRows": [
        {
          "genusId": "313709",
          "genus": "Qijianglong",
          "occurrenceId": "1253472",
          "collectionId": "165720",
          "identifiedName": "Qijianglong guokr n. gen. n. sp.",
          "acceptedName": "Qijianglong guokr",
          "qualified": false,
          "occurrenceReferenceId": "54169",
          "collectionReferenceId": "54169",
          "cc": "CN",
          "state": "Chongqing",
          "county": "Qijiang",
          "formation": "Suining",
          "member": "",
          "geological_group": "",
          "collection_name": "Heba Village, Beidu Site",
          "collection_aka": "Qijianglong guokr type locality",
          "geogscale": "small collection",
          "stratscale": "formation",
          "stratcomments": "Wang et al. (2019) provide detrital zircon U/Pb mean ages of 114.4±1.1 Ma for the middle Suining Formation in Sichuan Basin, but it's not entirely certain whether this revised age is applicable to this collection",
          "geogcomments": ""
        }
      ],
      "sources": [
        "qiji2015",
        "dai2025"
      ],
      "recordedProvince": "Chongqing",
      "recordedUnits": [
        {
          "rank": "formation",
          "name": "Suining",
          "member": ""
        }
      ],
      "dayeEvidenceFound": false,
      "additionalNamedGenusLocalitiesFound": [],
      "rowLevelAssessment": "Captured row has known non-Tibetan province and independently reported regional unit. A blank geological_group is not an unknown geographical origin. If the Daye clue is explicitly scoped to Changdu/Tibet, this row can be a nonmatch on geography without inventing its parent group. Unit-only country-wide Daye exclusion still requires Daye scope/hierarchy evidence.",
      "footprintCompleteness": "Every frozen genus-linked row examined (one). Targeted primary literature search found no extra named-genus Daye footprint, but absence from all literature is not proven; new credible or qualified occurrences must be added and retained.",
      "uncertainties": [
        "Suining vs Upper Shaximiao same-specimen horizon conflict preserved; revised geological survey unpublished. Formation-age controversy does not itself create another locality."
      ]
    },
    {
      "genus": "Anhuilong",
      "pbdbId": "376757",
      "frozenRows": [
        {
          "genusId": "376757",
          "genus": "Anhuilong",
          "occurrenceId": "1418650",
          "collectionId": "196538",
          "identifiedName": "Anhuilong diboensis n. gen. n. sp.",
          "acceptedName": "Anhuilong diboensis",
          "qualified": false,
          "occurrenceReferenceId": "66843",
          "collectionReferenceId": "66843",
          "cc": "CN",
          "state": "Anhui",
          "county": "Shexian",
          "formation": "Hongqin",
          "member": "",
          "geological_group": "",
          "collection_name": "Jimushan, Hengguan Village",
          "collection_aka": "",
          "geogscale": "small collection",
          "stratscale": "bed",
          "stratcomments": "lower part of the Middle Jurassic Hongqin Formation",
          "geogcomments": "Jimushan of Hengguan Village, Wangcun Town, Shexian County, Huangshan City, Anhui Province, Eastern China"
        }
      ],
      "sources": [
        "anhui2018"
      ],
      "recordedProvince": "Anhui",
      "recordedUnits": [
        {
          "rank": "formation",
          "name": "Hongqin",
          "member": ""
        }
      ],
      "dayeEvidenceFound": false,
      "additionalNamedGenusLocalitiesFound": [],
      "rowLevelAssessment": "Captured row has known non-Tibetan province and independently reported regional unit. A blank geological_group is not an unknown geographical origin. If the Daye clue is explicitly scoped to Changdu/Tibet, this row can be a nonmatch on geography without inventing its parent group. Unit-only country-wide Daye exclusion still requires Daye scope/hierarchy evidence.",
      "footprintCompleteness": "Every frozen genus-linked row examined (one). Targeted primary literature search found no extra named-genus Daye footprint, but absence from all literature is not proven; new credible or qualified occurrences must be added and retained.",
      "uncertainties": [
        "Full institutional PDF fetch failed, but indexed Locality and horizon explicitly matches PBDB; lower part is informal level, not named member."
      ]
    }
  ],
  "crossCaseFindings": [
    "All seven frozen rows have known province and formation but blank geological_group. The metadata gap is at stratigraphic group rank, not fossil geographic location.",
    "Huangshanlong and Anhuilong share the named Jimushan locality and Hongqin Formation but original descriptions place them in different informal levels; no artificial genus-wide quarry exclusivity is asserted.",
    "Xinjiangtitan Qigu/Qiketai alternatives and Qijianglong Suining/Upper Shaximiao alternatives concern the same specimens and must be represented without double-counting independent fossil collections."
  ],
  "sourceAccessCaveat": "Daanosaurus2005 and Eomamenchisaurus2008 full originals not obtained. Anhuilong2018 institutional PDF indexed systematic account inspected, direct fetch timed out. These gaps are explicitly retained.",
  "assertionGeographyEvidence": [
    {
      "assertionId": "asian-sauropod-13",
      "genera": [
        "Anhuilong",
        "Huangshanlong"
      ],
      "province": "Anhui",
      "rank": "formation",
      "unit": "Hongqin",
      "sourceKeys": [
        "anhui2018",
        "huang2014"
      ],
      "recordLinks": {
        "Anhuilong": [
          "1418650"
        ],
        "Huangshanlong": [
          "1244127"
        ]
      },
      "scope": "These primary original descriptions establish Anhui for exactly the currently recorded Hongqin specimens. Do not transfer Anhui to an independent unidentified Hongqin occurrence or any future referred specimen. Article wording and frozen capture agree at province rank."
    },
    {
      "assertionId": "asian-sauropod-14",
      "genera": [
        "Eomamenchisaurus",
        "Yuanmousaurus"
      ],
      "province": "Yunnan",
      "rank": "formation",
      "unit": "Zhanghe",
      "sourceKeys": [
        "eoma2008",
        "nebula2015"
      ],
      "recordLinks": {
        "Eomamenchisaurus": [
          "826867"
        ]
      },
      "scope": "Eomamenchisaurus original abstract explicitly Yuanmou/Yunnan/Zhanghe. Nebulasaurus primary regional paper places both Eomamenchisaurus and Yuanmousaurus in Zhanghe of Yunnan; attach province to this reported regional assertion only. Yuanmousaurus exact occurrence links should be verified by its assigned researcher, not invented."
    },
    {
      "assertionId": "asian-sauropod-19",
      "genera": [
        "Qijianglong"
      ],
      "province": "Chongqing",
      "rank": "formation",
      "unit": "Upper Shaximiao",
      "certainty": "uncertain",
      "sourceKeys": [
        "qiji2015",
        "dai2025"
      ],
      "recordLinks": {
        "Qijianglong": [
          "1253472"
        ]
      },
      "scope": "2015 type account identifies Beidu/Qijiang/Chongqing.2025 remapping explicitly refers to those materials; Upper Shaximiao is an alternative for the same known locality, not a new unspecified independent occurrence. Keep uncertainty and the raw Suining alternative."
    }
  ]
}