{
  "reviewedAt": "2026-10-10",
  "scope": "Six assigned Mamenchisauridae locality footprints; research-only dossier, no policy/tree/roster edits",
  "policy": "All frozen linked records and qualified occurrences retained. Resolve row geography without filling unknown stratigraphic parents. No genus-wide absence inferred from one type locality.",
  "sources": {
    "upchurch2021": {
      "title": "Upchurch et al. 2021, Re-assessment of Hudiesaurus sinojapanorum and evolution of hyper-robust antebrachia",
      "doi": "10.1080/02724634.2021.1994414",
      "url": "https://discovery.ucl.ac.uk/id/eprint/10135460/7/Mannion_02724634.2021.pdf",
      "access": "Full 32-page author-repository PDF read via web retrieval; direct local download was blocked.",
      "sections": "Geological background PDF pp3–4; Rhomaleopakhus systematic account PDF p12 (printed e1994414-11)",
      "evidence": "IVPP V11121-1 originates from lower Kalazha Formation at Qiketai, Shanshan County, Turpan Basin, Xinjiang. Geological review finds no presented basis for reassignment to Qigu and retains latest Jurassic Kalazha pending further work. This supports Xinjiang geography for existing asian-sauropod-17 assertion; it does not establish a Daye hierarchy.",
      "webRef": "turn305view1"
    },
    "ren2024": {
      "title": "Ren et al.2024, The first mamenchisaurid from the Upper Jurassic Dongxing Formation of Guangxi, southernmost China",
      "doi": "10.1080/08912963.2024.2309287",
      "url": "https://doi.org/10.1080/08912963.2024.2309287",
      "access": "Full original 14-page article read via indexed Google Groups mirror; publisher page blocked. Original uses Jingia; PBDB accepted Jingiella is retained.",
      "mirrorUrl": "https://11454898788327940634.googlegroups.com/attach/126e569dc1710/Ren%20%2024%20The%20first%20mamenchisaurid%20from%20the%20Upper%20Jurassic%20Dongxing%20Formation%20of%20Guangxi%20southernmost%20China.pdf?part=0.2&vt=ANaJVrExgdK1if0Oa7M5HjF7pCn9lEvAiHP2gb6DJekz-0hrjBRYXqXngG20IFnluyFrErKknQBwacWksPQTSnnWuFHPzsiiIdKxWHfEzJsPjVuAouloD4M",
      "sections": "Systematic palaeontology p3; Locality and horizon p4",
      "evidence": "Holotype DXJL2021001 collected at Nanmushan village, Dongxing Town/City, Guangxi Zhuang Autonomous Region. Horizon lies in upper portion of Lower Member of Dongxing Formation; Late Jurassic supported, precise Kimmeridgian tentative.",
      "webRef": "turn337view0"
    },
    "wei2025": {
      "title": "Wei et al.2025, A new mamenchisaurid from the Upper Jurassic Suining Formation of the Sichuan Basin",
      "doi": "10.1038/s41598-025-09796-0",
      "url": "https://www.nature.com/articles/s41598-025-09796-0",
      "access": "Full primary publisher HTML",
      "sections": "Geological background; Type locality and horizon",
      "evidence": "Holotype TNM0254 from Dafo Street building site, Tongnan District, Chongqing. Fieldwork places it in lower portion of Suining Formation. Authors adopt Late Jurassic scheme while noting zircon results supporting Early Cretaceous alternatives.",
      "webRef": "turn305view0"
    },
    "ren2020": {
      "title": "Ren et al.2020, A revision of the referred specimen of Chuanjiesaurus anaensis",
      "doi": "10.1080/08912963.2020.1747450",
      "url": "https://www.researchgate.net/publication/340537928_A_revision_of_the_referred_specimen_of_Chuanjiesaurus_anaensis_Fang_et_al_2000_a_new_early_branching_mamenchisaurid_sauropod_from_the_Middle_Jurassic_of_China",
      "access": "Original abstract only; full text unavailable",
      "sections": "Abstract",
      "evidence": "Reassigns LFGT LCD9701-1 from Chuanjiesaurus to new genus Analong, from Middle Jurassic Chuanjie Formation of Yunnan.",
      "webRef": "turn305view4"
    },
    "sekiya2011": {
      "title": "Sekiya2011, Re-examination of Chuanjiesaurus anaensis",
      "url": "https://www.dinosaur.pref.fukui.jp/archive/memoir/memoir010-001.pdf",
      "access": "Full 54-page publisher PDF downloaded; relevant text read with pdftotext.",
      "sections": "Geological settings and age pp2–3; referred specimen pp5–6; Fig4 quarry map",
      "evidence": "LCD9701-I preserved beside Chuanjiesaurus holotype at same quarry in Chuanjie Village, Lufeng/Yunnan, within Chuanjie Formation. Upper Lufeng formerly divided into four members, reclassified as Chuanjie, Laoluocun, Madishan, Anning formations. No Daye relationship claimed.",
      "localFile": "/workspace/scratch/df61339eaede/mamenchi-b-primary/sekiya2011.pdf"
    },
    "li2011": {
      "title": "Li et al.2011, Dinosaur assemblages from Middle Jurassic Shaximiao and Chuanjie formations",
      "url": "https://vjs.pgi.gov.pl/article/download/26567/18275/39914",
      "access": "Full 22-page primary review via web PDF retrieval",
      "sections": "Lower/upper Shaximiao lists and Table1 pp2–7",
      "evidence": "Review reports Omeisaurus junghsiensis, luoquanensis and tianfuensis in lower Shaximiao; changshouensis, maoianus (written maoi), fuxiensis in upper Shaximiao. Assemblage-level support for multiple species/units; no genus-wide locality exclusion or proof about Gansu Chungchai record.",
      "webRef": "turn312view1"
    },
    "tan2019": {
      "title": "Tan et al.2019, Discovery of Omeisaurus in Middle Jurassic Shaximiao Formation of Yunyang",
      "url": "https://www.vertpala.ac.cn/EN/abstract/abstract25.shtml",
      "fullTextUrl": "https://www.researchgate.net/publication/332369134_Discovery_of_Omeisaurus_Dinosauria_Sauropoda_in_the_Middle_Jurassic_Shaximiao_Formation_of_Yunyang_Chongqing_China",
      "access": "Publisher abstract and full author-uploaded article text read",
      "sections": "Systematic account/Locality and horizon pp106–107; species comparison pp112–113",
      "evidence": "Omeisaurus sp. cervical S66/CLGPRv00001, Pu’an/Yunyang/Chongqing, lower-middle Lower Member Shaximiao. Preserve this non-type positive footprint even where later assigned to O.puxiani; same locality does not require manufacturing an unknown horizon. Comparative discussion pp112–113 explicitly places O.changshouensis in Upper Shaximiao at Changshou/Chongqing and O.maoianus in Upper Shaximiao at Jingyan/Sichuan.",
      "webRef": "turn344view1"
    },
    "zhao2013": {
      "title": "Zhao et al.2013, A large theropod metatarsal from upper Shishugou Formation, Junggar Basin",
      "url": "https://ivpp.cas.cn/sourcedb/zw/rck/yszj/202311/P020140313541373666080.pdf",
      "access": "Full 14-page primary paper; Table1 English labels readable, main Chinese text encoding garbled",
      "sections": "Table1 printed p31/PDFp3",
      "evidence": "Table lists Tienshanosaurus chitaiensis in upper Shishugou with exact locality shown unknown. Supports formation/horizon context, not exact Paikushan type locality or validation of each old referred identification.",
      "webRef": "turn339view0"
    },
    "young1937_unread": {
      "title": "Young1937, A new dinosaurian from Sinkiang",
      "access": "Original not accessed; bibliographic identity confirmed. Exact type-site wording remains PBDB-derived.",
      "url": "https://ci.nii.ac.jp/ncid/BA76751343"
    },
    "young1939_unread": {
      "title": "Young1939, On a new Sauropoda, with notes on other fragmentary reptiles from Szechuan",
      "doi": "10.1111/j.1755-6724.1939.mp19003005.x",
      "url": "https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1755-6724.1939.mp19003005.x",
      "access": "Publisher metadata only; original locality account not accessed"
    },
    "martinrolland1999_unread": {
      "title": "Martin-Rolland1999, Les sauropodes chinois, Revue Paleobiologie18(1):287–315",
      "access": "Original not accessed. It is frozen PBDB reference14475 for Chungchai/Gansu occurrence522077; secondary pages used only as research leads, not amendment evidence."
    },
    "dong1983": {
      "title": "Dong, Zhou and Zhang1983, Dinosaurs from the Jurassic of Sichuan",
      "url": "https://naturalhistory.si.edu/sites/default/files/media/translated_publications/Dong%26amp%3B_83.pdf",
      "access": "Full original monograph in Will Downs1999 English translation, hosted by Smithsonian; original Chinese not read",
      "sections": "O.fuxiensis systematic account printedp52/PDFp60; O.changshouensis account printedp50/PDFp58",
      "evidence": "O.fuxiensis CV00267 locality is Wujiaba/Zigong, Upper Shaximiao Formation. Frozen occurrence572130 gives Sichuan province. Translation from original account confirms specimen/unit/site continuity.",
      "webRef": "turn348view0"
    }
  },
  "cases": [
    {
      "genus": "Omeisaurus",
      "pbdbGenusId": "38702",
      "frozenRows": [
        {
          "genusId": "38702",
          "genus": "Omeisaurus",
          "occurrenceId": "474577",
          "collectionId": "47071",
          "identifiedName": "Omeisaurus junghsiensis n. gen. n. sp.",
          "acceptedName": "Omeisaurus junghsiensis",
          "qualified": false,
          "occurrenceReferenceId": "12538",
          "collectionReferenceId": "15531",
          "cc": "CN",
          "state": "Sichuan",
          "county": "Rongxian",
          "formation": "Shaximiao",
          "member": "Daanzhai",
          "geological_group": "Chongqing",
          "collection_name": "Hsikuashan, Junghsien",
          "collection_aka": "Xiguashan, Dongmenwai, Rongxian",
          "geogscale": "small collection",
          "stratscale": "bed",
          "stratcomments": "200 m above Tzeluting (Tzeliuching) Fm.\r\nSeveral radiometric ages have been reported for the Shaximiao Formation, including 167 Ma or 172 Ma (Zong and Shi, 1997), 167–172 Ma or 178–169 Ma (Gou et al., 2000), 163±3 Ma (Li et al., 2010), 160±4 Ma (Luo et al., 2014), 158±7 Ma (Qian et al., 2016), and 159±2 Ma (Wang et al., 2018). However, more recent studies suggest an older age; Dai et al. 2022 reported a maximum depositional age for the bone-bearing layers of the lower member of the Shaximiao formation to be Bjaocan. Zhou et al. 2022 also supported a late Middle Jurassic age for the Shaximiao Formation (Bathonian-Callovian).",
          "geogcomments": "Mt. Hsikuashan (Xiguashan), outside E gate of Dongmenwai, near Junghsien (Rongxian), Sichuan; a few yards E of river that runs N-S and E from city of Junghsien"
        },
        {
          "genusId": "38702",
          "genus": "Omeisaurus",
          "occurrenceId": "474578",
          "collectionId": "47072",
          "identifiedName": "? Omeisaurus junghsiensis",
          "acceptedName": "Omeisaurus junghsiensis",
          "qualified": true,
          "occurrenceReferenceId": "12538",
          "collectionReferenceId": "15531",
          "cc": "CN",
          "state": "Sichuan",
          "county": "",
          "formation": "Shaximiao",
          "member": "Lower",
          "geological_group": "Chongqing",
          "collection_name": "Chenchia",
          "collection_aka": "Chen Chia, Chenxi",
          "geogscale": "small collection",
          "stratscale": "bed",
          "stratcomments": "below Tzeliuching limestone, and therefore below Omeisaurus junghsiensis type site\r\n\r\nWang et al. 2018 suggested an Oxfordian age for the lower beds, rather than Middle Jurassic\r\nSeveral radiometric ages have been reported for the Shaximiao Formation, including 167 Ma or 172 Ma (Zong and Shi, 1997), 167–172 Ma or 178–169 Ma (Gou et al., 2000), 163±3 Ma (Li et al., 2010), 160±4 Ma (Luo et al., 2014), 158±7 Ma (Qian et al., 2016), and 159±2 Ma (Wang et al., 2018). However, more recent studies suggest an older age; Dai et al. 2022 reported a maximum depositional age for the bone-bearing layers of the lower member of the Shaximiao formation to be Bjaocan. Zhou et al. 2022 also supported a late Middle Jurassic age for the Shaximiao Formation (Bathonian-Callovian).",
          "geogcomments": "Chenchia (Chen Chia, Chenxi), about 10 li (3.107 mi) NE of Junghsien city (Rongxian), Sichuan"
        },
        {
          "genusId": "38702",
          "genus": "Omeisaurus",
          "occurrenceId": "474628",
          "collectionId": "47076",
          "identifiedName": "cf. Omeisaurus junghsiensis",
          "acceptedName": "Omeisaurus junghsiensis",
          "qualified": true,
          "occurrenceReferenceId": "12540",
          "collectionReferenceId": "12540",
          "cc": "CN",
          "state": "Sichuan",
          "county": "",
          "formation": "",
          "member": "",
          "geological_group": "Chongqing",
          "collection_name": "locality 47 (8b), Guangyuan",
          "collection_aka": "",
          "geogscale": "outcrop",
          "stratscale": "group of beds",
          "stratcomments": "top of \"Kuangyuan Series\" = Chongqing Group/Guangyuan Group",
          "geogcomments": "S suburb of Kuangyuan/Guangyuan city, northern Sichuan, hill slopes of Chentsianyen escarpment"
        },
        {
          "genusId": "38702",
          "genus": "Omeisaurus",
          "occurrenceId": "474631",
          "collectionId": "47077",
          "identifiedName": "cf. Omeisaurus junghsiensis",
          "acceptedName": "Omeisaurus junghsiensis",
          "qualified": true,
          "occurrenceReferenceId": "12540",
          "collectionReferenceId": "12540",
          "cc": "CN",
          "state": "Sichuan",
          "county": "",
          "formation": "",
          "member": "",
          "geological_group": "Chongqing",
          "collection_name": "locality 48 (2), Chialingchiang",
          "collection_aka": "Guangyuan, Kwangyuan, Kuangyuan",
          "geogscale": "outcrop",
          "stratscale": "bed",
          "stratcomments": "basal part of \"Kuangyuan Series\" = Guangyuan Group (now equivalent to Chungking/Chongqing Group)",
          "geogcomments": "right bank of Chialingchiang, about 10 km N of Kuangyuan city"
        },
        {
          "genusId": "38702",
          "genus": "Omeisaurus",
          "occurrenceId": "522064",
          "collectionId": "53665",
          "identifiedName": "Omeisaurus luoquanensis n. sp.",
          "acceptedName": "Omeisaurus luoquanensis",
          "qualified": false,
          "occurrenceReferenceId": "28519",
          "collectionReferenceId": "28519",
          "cc": "CN",
          "state": "Sichuan",
          "county": "Zizhong",
          "formation": "Shaximiao",
          "member": "Lower",
          "geological_group": "",
          "collection_name": "Luoquan village",
          "collection_aka": "",
          "geogscale": "small collection",
          "stratscale": "bed",
          "stratcomments": "from 2 beds, 5 m apart (IVPP V21502 from higher level)",
          "geogcomments": "Luoquan village, Zizhong county (coordinates for city of Zizhong)"
        },
        {
          "genusId": "38702",
          "genus": "Omeisaurus",
          "occurrenceId": "522077",
          "collectionId": "53671",
          "identifiedName": "Omeisaurus junghsiensis",
          "acceptedName": "Omeisaurus junghsiensis",
          "qualified": false,
          "occurrenceReferenceId": "14475",
          "collectionReferenceId": "14475",
          "cc": "CN",
          "state": "Gansu",
          "county": "",
          "formation": "",
          "member": "",
          "geological_group": "",
          "collection_name": "Chungchai sauropod site",
          "collection_aka": "Zhongzhai",
          "geogscale": "small collection",
          "stratscale": "bed",
          "stratcomments": "",
          "geogcomments": "Chungchai, Kangsien, Gansu"
        },
        {
          "genusId": "38702",
          "genus": "Omeisaurus",
          "occurrenceId": "557581",
          "collectionId": "57771",
          "identifiedName": "Omeisaurus changshouensis n. sp.",
          "acceptedName": "Omeisaurus changshouensis",
          "qualified": false,
          "occurrenceReferenceId": "15533",
          "collectionReferenceId": "15533",
          "cc": "CN",
          "state": "Sichuan",
          "county": "Changshou",
          "formation": "Shaximiao",
          "member": "Upper",
          "geological_group": "Chongqing",
          "collection_name": "Moutzenhan (IVPP)",
          "collection_aka": "Shizitan, Changshou",
          "geogscale": "small collection",
          "stratscale": "bed",
          "stratcomments": "Between the Chiating Beds and Chungking Beds; now = Shangshaximiao = Upper Shaximiao Fm.\r\nSeveral radiometric ages have been reported for the Shaximiao Formation, including 167 Ma or 172 Ma (Zong and Shi, 1997), 167–172 Ma or 178–169 Ma (Gou et al., 2000), 163±3 Ma (Li et al., 2010), 160±4 Ma (Luo et al., 2014), 158±7 Ma (Qian et al., 2016), and 159±2 Ma (Wang et al., 2018). However, more recent studies suggest an older age; Dai et al. 2022 reported a maximum depositional age for the bone-bearing layers of the lower member of the Shaximiao formation to be Bjaocan. Zhou et al. 2022 also supported a late Middle Jurassic age for the Shaximiao Formation (Bathonian-Callovian).",
          "geogcomments": "Moutzenhan, Szetzetan (Shizitan) Reservoir, Changshouhsien/Changshou along the Yangtze River some 111 km NE of Chungking."
        },
        {
          "genusId": "38702",
          "genus": "Omeisaurus",
          "occurrenceId": "572130",
          "collectionId": "51914",
          "identifiedName": "Omeisaurus fuxiensis n. sp.",
          "acceptedName": "Omeisaurus fuxiensis",
          "qualified": false,
          "occurrenceReferenceId": "17258",
          "collectionReferenceId": "13842",
          "cc": "CN",
          "state": "Sichuan",
          "county": "Zigong",
          "formation": "Shaximiao",
          "member": "Upper",
          "geological_group": "Chongqing",
          "collection_name": "Wujiaba Dam Quarry, Zigong",
          "collection_aka": "Shaheba",
          "geogscale": "small collection",
          "stratscale": "bed",
          "stratcomments": "Several radiometric ages have been reported for the Shaximiao Formation, including 167 Ma or 172 Ma (Zong and Shi, 1997), 167–172 Ma or 178–169 Ma (Gou et al., 2000), 163±3 Ma (Li et al., 2010), 160±4 Ma (Luo et al., 2014), 158±7 Ma (Qian et al., 2016), and 159±2 Ma (Wang et al., 2018). However, more recent studies suggest an older age; Dai et al. 2022 reported a maximum depositional age for the bone-bearing layers of the lower member of the Shaximiao formation to be Bjaocan. Zhou et al. 2022 also supported a late Middle Jurassic age for the Shaximiao Formation (Bathonian-Callovian).",
          "geogcomments": "Wujiaba Dam (Shaheba Dam), along Fuhsi River (tributary of Tuojiang River) near city of Zigong (Tsekung), about 4 km SW"
        },
        {
          "genusId": "38702",
          "genus": "Omeisaurus",
          "occurrenceId": "739555",
          "collectionId": "24883",
          "identifiedName": "Omeisaurus tianfuensis n. sp.",
          "acceptedName": "Omeisaurus tianfuensis",
          "qualified": false,
          "occurrenceReferenceId": "28524",
          "collectionReferenceId": "6976",
          "cc": "CN",
          "state": "Sichuan",
          "county": "Zigong",
          "formation": "Shaximiao",
          "member": "Lower",
          "geological_group": "",
          "collection_name": "Dashanpu Dinosaur Quarry [lower]",
          "collection_aka": "Dashanpu Town",
          "geogscale": "outcrop",
          "stratscale": "bed",
          "stratcomments": "Based on detrital zircon U-Pb dating from this formation (but not this locality), Wang et al. (2018) suggested an Oxfordian age for the lower beds, rather than Middle Jurassic, with 159 ± 2 Ma as the maximum depositional age. However, from a section near the Dashanpu Dinosaur Quarry, Ren et al. (2022) documented the youngest age for the zircon sample as 166.0 ± 1.59 Ma, and weighed average ages of the youngest subpopulation under the constraints of 1σ and 2σ are 170.9 ± 0.64 Ma and 169.9 ± 0.63 Ma, with a maximum confidence age of 169.9 ± 0.63 Ma selected as the final result.",
          "geogcomments": "Dashanpu quarry, 10 km NE of Zigong, Sichuan, China"
        },
        {
          "genusId": "38702",
          "genus": "Omeisaurus",
          "occurrenceId": "975914",
          "collectionId": "24883",
          "identifiedName": "Omeisaurus jiaoi n. sp.",
          "acceptedName": "Omeisaurus jiaoi",
          "qualified": false,
          "occurrenceReferenceId": "37503",
          "collectionReferenceId": "6976",
          "cc": "CN",
          "state": "Sichuan",
          "county": "Zigong",
          "formation": "Shaximiao",
          "member": "Lower",
          "geological_group": "",
          "collection_name": "Dashanpu Dinosaur Quarry [lower]",
          "collection_aka": "Dashanpu Town",
          "geogscale": "outcrop",
          "stratscale": "bed",
          "stratcomments": "Based on detrital zircon U-Pb dating from this formation (but not this locality), Wang et al. (2018) suggested an Oxfordian age for the lower beds, rather than Middle Jurassic, with 159 ± 2 Ma as the maximum depositional age. However, from a section near the Dashanpu Dinosaur Quarry, Ren et al. (2022) documented the youngest age for the zircon sample as 166.0 ± 1.59 Ma, and weighed average ages of the youngest subpopulation under the constraints of 1σ and 2σ are 170.9 ± 0.64 Ma and 169.9 ± 0.63 Ma, with a maximum confidence age of 169.9 ± 0.63 Ma selected as the final result.",
          "geogcomments": "Dashanpu quarry, 10 km NE of Zigong, Sichuan, China"
        },
        {
          "genusId": "38702",
          "genus": "Omeisaurus",
          "occurrenceId": "1066328",
          "collectionId": "131866",
          "identifiedName": "Omeisaurus maoianus n. gen. n. sp.",
          "acceptedName": "Omeisaurus maoianus",
          "qualified": false,
          "occurrenceReferenceId": "42507",
          "collectionReferenceId": "42507",
          "cc": "CN",
          "state": "Sichuan",
          "county": "",
          "formation": "Shaximiao",
          "member": "Upper",
          "geological_group": "",
          "collection_name": "Omeisaurus maoianus type-locality",
          "collection_aka": "Jingyan, Sichuan",
          "geogscale": "",
          "stratscale": "bed",
          "stratcomments": "",
          "geogcomments": "Based on Google Earth placemark for Jingyan, Sichuan."
        },
        {
          "genusId": "38702",
          "genus": "Omeisaurus",
          "occurrenceId": "1472810",
          "collectionId": "205726",
          "identifiedName": "Omeisaurus puxiani n. sp.",
          "acceptedName": "Omeisaurus puxiani",
          "qualified": false,
          "occurrenceReferenceId": "72052",
          "collectionReferenceId": "70522",
          "cc": "CN",
          "state": "Chongqing",
          "county": "Yunyang",
          "formation": "Shaximiao",
          "member": "Lower",
          "geological_group": "Chongqing",
          "collection_name": "Laojun Village, Pu’an Town",
          "collection_aka": "Puan \"Dinosaur Wall\"; Yunyang",
          "geogscale": "small collection",
          "stratscale": "bed",
          "stratcomments": "Lower to middle portion of the lower member of the Shaximiao Formation\r\nSeveral radiometric ages have been reported for the Shaximiao Formation, including 167 Ma or 172 Ma (Zong and Shi, 1997), 167–172 Ma or 178–169 Ma (Gou et al., 2000), 163±3 Ma (Li et al., 2010), 160±4 Ma (Luo et al., 2014), 158±7 Ma (Qian et al., 2016), and 159±2 Ma (Wang et al., 2018). However, more recent studies suggest an older age: Dai et al. (2022) reported a maximum depositional age for the bone-bearing layers of the lower member of the Shaximiao formation to be Bathonian, based on zircon U-Pb ages of 166.0 ± 1.5 Ma (Zhou et al. 2022). ",
          "geogcomments": "Laojun Village, Pu’an Town, Yunyang County, Chongqing Municipality"
        },
        {
          "genusId": "38702",
          "genus": "Omeisaurus",
          "occurrenceId": "1639782",
          "collectionId": "232460",
          "identifiedName": "Omeisaurus sp.",
          "acceptedName": "Omeisaurus",
          "qualified": false,
          "occurrenceReferenceId": "86568",
          "collectionReferenceId": "86568",
          "cc": "CN",
          "state": "Sichuan",
          "county": "",
          "formation": "Shaximiao",
          "member": "",
          "geological_group": "",
          "collection_name": "Weiyuan Anticline, Northwest",
          "collection_aka": "",
          "geogscale": "outcrop",
          "stratscale": "",
          "stratcomments": "\"The locality occurs in the northwest of the Weiyuan anticline, about 15 km from the north oblique axis in strata with a gentle inclination of 2° to ~5°. The fossil site is at the bottom of the Middle Jurassic Shaximiao Formation, which  measures  ~60  m  thick  from  the  top  of  the Xintiangou Formation.\"",
          "geogcomments": "Qinglongshan  Mountain,  Zhujiamiao  Village,  Fuxing Town, Rong County, Zigong City, Sichuan Province"
        }
      ],
      "credibleDayeOccurrenceFound": false,
      "wholeGenusAbsenceClaimed": false,
      "dayeAssessment": "No positive Daye occurrence found in accessed sources or frozen rows; bare CN/Daye group still lacks relevant group metadata for some rows. A independently sourced Daye+Tibet geographic clue can resolve frozen out-of-province rows without asserting whole-genus absence.",
      "sources": [
        "li2011",
        "tan2019",
        "young1939_unread",
        "martinrolland1999_unread",
        "dong1983"
      ],
      "type": "O.junghsiensis: frozen type occurrence474577, Hsikuashan/Xiguashan outside Junghsien/Rongxian, Sichuan. Original1939 not reverified.",
      "uncertainties": [
        "Genus includes multiple species and sites, plus question-mark/cf records. All thirteen frozen rows preserved.",
        "Gansu Chungchai occurrence522077 has blank formation/member/group; do not fill it from Shaximiao species summary.",
        "Frozen type row has Shaximiao formation plus Daanzhai member; potential incompatible hierarchy requires original specimen-level research before amendment.",
        "Qualified Guangyuan rows474628/474631 have only Chongqing group; keep qualification and old group wording.",
        "Secondary lead to Young & Chow1953 IVPPV714 with uncertain locality is unverified; not added as a primary-backed new occurrence."
      ],
      "relatedAssertions": [
        "asian-sauropod-18"
      ],
      "recommendedAction": "Retain every row. Add geography to assemblage assertion only when explicit scope confirmed. Combined Daye unit plus Tibet/Changdu geographic anchor can compare existing Sichuan, Chongqing and Gansu records without inventing missing group metadata.",
      "summaryOnlyGeographicScope": {
        "assertionId": "asian-sauropod-18",
        "possibleStates": [
          "Sichuan",
          "Chongqing"
        ],
        "species": [
          {
            "species": "O.changshouensis",
            "place": "Changshou",
            "state": "Chongqing",
            "source": "tan2019",
            "frozenOccurrenceId": "557581",
            "note": "Frozen historical administrative label Sichuan retained; modern primary explicitly Chongqing."
          },
          {
            "species": "O.maoianus (maoi in Li2011)",
            "place": "Jingyan",
            "state": "Sichuan",
            "source": "tan2019",
            "frozenOccurrenceId": "1066328"
          },
          {
            "species": "O.fuxiensis",
            "place": "Wujiaba/Zigong",
            "state": "Sichuan",
            "source": "dong1983",
            "frozenOccurrenceId": "572130"
          }
        ],
        "scope": "Only the three species/occurrences explicitly represented by Li2011 Upper Shaximiao summary. Alternative states are conservative possible geography, not independent positive matches; no whole-genus scope imposed."
      }
    },
    {
      "genus": "Tienshanosaurus",
      "pbdbGenusId": "38703",
      "frozenRows": [
        {
          "genusId": "38703",
          "genus": "Tienshanosaurus",
          "occurrenceId": "522040",
          "collectionId": "53658",
          "identifiedName": "Tienshanosaurus chitaiensis n. gen. n. sp.",
          "acceptedName": "Tienshanosaurus",
          "qualified": false,
          "occurrenceReferenceId": "24250",
          "collectionReferenceId": "24250",
          "cc": "CN",
          "state": "Xinjiang",
          "county": "",
          "formation": "Shishugou",
          "member": "Upper",
          "geological_group": "",
          "collection_name": "Paikushan (Luanshantze)",
          "collection_aka": "Pai-k'ou-ch'uan, Qitai, Chitai",
          "geogscale": "outcrop",
          "stratscale": "bed",
          "stratcomments": "also called the \"Upper Shuihsikou series\", and originally considered Lower Cretaceous",
          "geogcomments": "on a hill at  Paikushan (= Pai-k'ou-ch'uan, Baikouquan, Luanshantze), 144 km (250 li) N of Qitai (Chitai), Junggar Basin; bones from about 8 m apart"
        },
        {
          "genusId": "38703",
          "genus": "Tienshanosaurus",
          "occurrenceId": "557584",
          "collectionId": "57774",
          "identifiedName": "Tienshanosaurus chitaiensis",
          "acceptedName": "Tienshanosaurus",
          "qualified": false,
          "occurrenceReferenceId": "15533",
          "collectionReferenceId": "15533",
          "cc": "CN",
          "state": "Xinjiang",
          "county": "",
          "formation": "Shishugou",
          "member": "Upper",
          "geological_group": "",
          "collection_name": "Lamalishan, Chitai (IVPP)",
          "collection_aka": "Qiati",
          "geogscale": "small collection",
          "stratscale": "bed",
          "stratcomments": "",
          "geogcomments": "Lamalishan, Chitai, Singkiang"
        },
        {
          "genusId": "38703",
          "genus": "Tienshanosaurus",
          "occurrenceId": "658311",
          "collectionId": "70960",
          "identifiedName": "Tienshanosaurus sp.",
          "acceptedName": "Tienshanosaurus",
          "qualified": false,
          "occurrenceReferenceId": "9264",
          "collectionReferenceId": "9264",
          "cc": "CN",
          "state": "Xinjiang",
          "county": "",
          "formation": "Shishugou",
          "member": "Upper",
          "geological_group": "",
          "collection_name": "Wucaiwan, Kelameili (IVPP)",
          "collection_aka": "",
          "geogscale": "small collection",
          "stratscale": "bed",
          "stratcomments": "",
          "geogcomments": "Wucaiwan region, western Kelameili Mtns."
        }
      ],
      "credibleDayeOccurrenceFound": false,
      "wholeGenusAbsenceClaimed": false,
      "dayeAssessment": "No positive Daye occurrence found in accessed sources or frozen rows; bare CN/Daye group still lacks relevant group metadata for some rows. A independently sourced Daye+Tibet geographic clue can resolve frozen out-of-province rows without asserting whole-genus absence.",
      "sources": [
        "zhao2013",
        "young1937_unread"
      ],
      "type": "Frozen occurrence522040, Paikushan/Luanshantze (=Pai-kou-chuan/Baikouquan), upper Shishugou, Xinjiang.",
      "uncertainties": [
        "Three frozen records all Xinjiang/upper Shishugou: Paikushan type, Lamalishan557584, Wucaiwan658311.",
        "Original1937 and old referred specimen accounts not read; keep all occurrences, do not certify each taxonomic identification.",
        "Modern source labels genus poorly resolved; no roster/tree change justified here."
      ],
      "recommendedAction": "No invented parent group. All frozen rows have Xinjiang geography, usable for combined group+province comparison."
    },
    {
      "genus": "Analong",
      "pbdbGenusId": "414475",
      "frozenRows": [
        {
          "genusId": "414475",
          "genus": "Analong",
          "occurrenceId": "1499899",
          "collectionId": "70438",
          "identifiedName": "Analong chuanjieensis n. gen. n. sp.",
          "acceptedName": "Analong chuanjieensis",
          "qualified": false,
          "occurrenceReferenceId": "72051",
          "collectionReferenceId": "23627",
          "cc": "CN",
          "state": "Yunnan",
          "county": "Lufeng",
          "formation": "Chuanjie",
          "member": "",
          "geological_group": "",
          "collection_name": "Quarry 1, Lao Chang Qing",
          "collection_aka": "Laochangjing, A'na; Konglongshan; Laochangqing; Ana Village; A’na village",
          "geogscale": "outcrop",
          "stratscale": "bed",
          "stratcomments": "From the base of the Chuanjie Formation, which was regarded to be Middle Jurassic (Bajocian), according to the magnetostratigraphic study of Huang et al. (2015).\r\n\r\nOriginally assigned to Lufeng but ascribed to Upper Jurassic based on vertebrate fossils. Considered base (lower member) of Upper Lufeng and thus early Middle Jurassic by Wu et al. 2009 (equivalent to Chuanjie Fm.)",
          "geogcomments": "S slope of hill, 50 m from highway connecting Kunming and Dali. Approx. 20 km S/SE of Lufeng, near Lao Chang Qing (= Laochangjing), A'na village, Chuanjie township, Lufeng county (GPS: 24°58'20.84\"N, 102° 4'34.31\"E)"
        }
      ],
      "credibleDayeOccurrenceFound": false,
      "wholeGenusAbsenceClaimed": false,
      "dayeAssessment": "No positive Daye occurrence found in accessed sources or frozen rows; bare CN/Daye group still lacks relevant group metadata for some rows. A independently sourced Daye+Tibet geographic clue can resolve frozen out-of-province rows without asserting whole-genus absence.",
      "sources": [
        "ren2020",
        "sekiya2011"
      ],
      "type": "LCD9701-1 (previously LCD9701-I); frozen occurrence1499899/collection70438. Chuanjie Village/Lufeng/Yunnan quarry alongside Chuanjiesaurus.",
      "uncertainties": [
        "Full2020 taxonomic paper unavailable; specimen continuity and quarry provenance independently documented by full2011 primary.",
        "One frozen row does not establish worldwide exhaustive absence."
      ],
      "recommendedAction": "Retain Chuanjie formation and Yunnan; do not populate group or move tree."
    },
    {
      "genus": "Rhomaleopakhus",
      "pbdbGenusId": "446268",
      "frozenRows": [
        {
          "genusId": "446268",
          "genus": "Rhomaleopakhus",
          "occurrenceId": "1584287",
          "collectionId": "169944",
          "identifiedName": "Rhomaleopakhus turpanensis n. gen. n. sp.",
          "acceptedName": "Rhomaleopakhus turpanensis",
          "qualified": false,
          "occurrenceReferenceId": "78881",
          "collectionReferenceId": "11762",
          "cc": "CN",
          "state": "Xinjiang",
          "county": "Shanshan",
          "formation": "Kalazha",
          "member": "",
          "geological_group": "",
          "collection_name": "Qiektai (Hudiesaurus referred forelimb locality)",
          "collection_aka": "",
          "geogscale": "small collection",
          "stratscale": "bed",
          "stratcomments": "",
          "geogcomments": "1.1 km from the quarry of the Hudiesaurus type specimen"
        }
      ],
      "credibleDayeOccurrenceFound": false,
      "wholeGenusAbsenceClaimed": false,
      "dayeAssessment": "No positive Daye occurrence found in accessed sources or frozen rows; bare CN/Daye group still lacks relevant group metadata for some rows. A independently sourced Daye+Tibet geographic clue can resolve frozen out-of-province rows without asserting whole-genus absence.",
      "sources": [
        "upchurch2021"
      ],
      "type": "IVPPV11121-1, frozen occurrence1584287/collection169944, Qiketai/Shanshan/Turpan/Xinjiang, lower Kalazha.",
      "relatedAssertions": [
        "asian-sauropod-17"
      ],
      "uncertainties": [
        "Kalazha vs Qigu claim explicitly reviewed in primary; Kalazha retained pending new work rather than definitive elimination of historical alternative.",
        "Former Hudiesaurus referred forelimb identity distinct from holotype and isolated teeth."
      ],
      "recommendedAction": "Enrich existing asian-sauropod-17 with state Xinjiang, based on full primary. Do not infer group membership or genus-wide absence."
    },
    {
      "genus": "Jingiella",
      "pbdbGenusId": "484710",
      "frozenRows": [
        {
          "genusId": "484710",
          "genus": "Jingiella",
          "occurrenceId": "1647117",
          "collectionId": "233635",
          "identifiedName": "Jingia dongxingensis n. gen. n. sp.",
          "acceptedName": "Jingiella dongxingensis",
          "qualified": false,
          "occurrenceReferenceId": "87607",
          "collectionReferenceId": "87607",
          "cc": "CN",
          "state": "Guangxi Zhuang",
          "county": "",
          "formation": "Dongxing",
          "member": "Lower",
          "geological_group": "",
          "collection_name": "Nanmushan village, Dongxing Town",
          "collection_aka": "",
          "geogscale": "small collection",
          "stratscale": "bed",
          "stratcomments": "upper portion of the Lower Member of the Dongxing Formation",
          "geogcomments": "Nanmushan village, Dongxing Town, Dongxing City, Guangxi Zhuang Autonomous Region, South China"
        }
      ],
      "credibleDayeOccurrenceFound": false,
      "wholeGenusAbsenceClaimed": false,
      "dayeAssessment": "No positive Daye occurrence found in accessed sources or frozen rows; bare CN/Daye group still lacks relevant group metadata for some rows. A independently sourced Daye+Tibet geographic clue can resolve frozen out-of-province rows without asserting whole-genus absence.",
      "sources": [
        "ren2024"
      ],
      "type": "DXJL2021001, frozen occurrence1647117/collection233635, Nanmushan/Dongxing/Guangxi; upper part Lower Member Dongxing Formation.",
      "uncertainties": [
        "Precise Kimmeridgian age tentative; retain broad Late Jurassic.",
        "Original uses Jingia, later name Jingiella retained as PBDB canonical; no roster/name amendment here."
      ],
      "recommendedAction": "Frozen footprint confirmed; preserve formation/member/province, do not invent parent group."
    },
    {
      "genus": "Tongnanlong",
      "pbdbGenusId": "511034",
      "frozenRows": [
        {
          "genusId": "511034",
          "genus": "Tongnanlong",
          "occurrenceId": "1703539",
          "collectionId": "241394",
          "identifiedName": "Tongnanlong zhimingi n. gen. n. sp.",
          "acceptedName": "Tongnanlong zhimingi",
          "qualified": false,
          "occurrenceReferenceId": "92519",
          "collectionReferenceId": "92519",
          "cc": "CN",
          "state": "Chongqing",
          "county": "Tongnan",
          "formation": "Suining",
          "member": "",
          "geological_group": "",
          "collection_name": "Dafo Street, Tongnan",
          "collection_aka": "",
          "geogscale": "small collection",
          "stratscale": "bed",
          "stratcomments": "",
          "geogcomments": "The building site of Dafo Street (with GPS N30°10’44”, E105°48’17”), Tongnan District"
        }
      ],
      "credibleDayeOccurrenceFound": false,
      "wholeGenusAbsenceClaimed": false,
      "dayeAssessment": "No positive Daye occurrence found in accessed sources or frozen rows; bare CN/Daye group still lacks relevant group metadata for some rows. A independently sourced Daye+Tibet geographic clue can resolve frozen out-of-province rows without asserting whole-genus absence.",
      "sources": [
        "wei2025"
      ],
      "type": "TNM0254; frozen occurrence1703539/collection241394, Dafo Street/Tongnan/Chongqing, lower Suining.",
      "uncertainties": [
        "Suining age disputed: authors adopt Late Jurassic with explicit discussion of Early Cretaceous zircon alternatives.",
        "Suining lower portion is positional horizon, not a newly named member."
      ],
      "recommendedAction": "Frozen locality confirmed; lower-portion detail can support prose but no invented member or group."
    }
  ],
  "counts": {
    "genera": 6,
    "frozenRows": 20,
    "positiveDayeOccurrencesFound": 0
  },
  "implementationRecommendations": [
    "Use combined geological_group+state anchor for Daye/Tibet when Daye scope independently sourced by lead agent.",
    "Keep bare CN/Daye unknown classification where only missing group values are known.",
    "Update asian-sauropod-17 access description to full2021 primary PDF and add explicit Xinjiang state; avoid a second broad assertion duplicating row footprint.",
    "Preserve all thirteen Omeisaurus records including blank-horizon Gansu and cf/question-mark records; use geography for scoped clue, not taxonomic cleanup.",
    "For existing Omeisaurus asian-sauropod-18 Upper Shaximiao summary, possibleStates Sichuan/Chongqing is sourced by specific constituent species footprints. Do not make separate positive matches from possibleStates, do not alter frozen Gansu row, do not generalize to all genus occurrences."
  ]
}