{ "reviewed_at": "2026-10-10", "scope": [ "Bellusaurus", "Hudiesaurus", "Zigongosaurus", "Klamelisaurus", "Chuanjiesaurus", "Yuanmousaurus" ], "shared_policy_changed": false, "policy_read": "sources/locality-evidence-policy.json", "prior_dossier_read": "sources/sauropods-complete-review.json", "main_decision": "Use explicit unit + province geography rather than inventing geological-group membership. Enrich only precise positive literature footprints with primary-supported provinces; split the shared Zigongosaurus assertion before assigning Sichuan.", "sources": { "bellus2018": { "title": "Moore et al. 2018, Cranial anatomy of Bellusaurus sui, PeerJ 6:e4881", "doi": "10.7717/peerj.4881", "url": "https://peerj.com/articles/4881/", "access_url": "https://dinodata.de/bibliothek/pdf_c/2018/001_peerj-4881_dd.pdf", "access": "Complete published 74-page article accessible via PDF mirror and author ResearchGate full text; locality/systematics pp.3–7 inspected. Publisher direct 403 and PMC recaptcha.", "ref": "turn330view1", "evidence": "Bellusaurus is from Konglonggou/Dinosaur Valley in the Junggar Basin, Xinjiang; 2003 referred material came from reopening the original quarry. The quarry is at the base of upper Shishugou beds. Klamelisaurus is from near Jiangjunmiao at the top of former Wucaiwan, now lower Shishugou beds." }, "hudies2021": { "title": "Upchurch et al. 2021, Re-assessment of Hudiesaurus sinojapanorum, JVP e1994414", "doi": "10.1080/02724634.2021.1994414", "url": "https://discovery.ucl.ac.uk/id/eprint/10135460/7/Mannion_02724634.2021.pdf", "access": "Complete 32-page deposited published PDF; printed pp.1,5,9,12 inspected.", "ref": "turn306view1", "evidence": "Hudiesaurus holotype IVPP V11120 is a cervicodorsal vertebra from lower Kalazha Formation, Qiketai, Shanshan County, Turpan Basin, Xinjiang. Forelimb IVPP V11121-1 is reassigned to Rhomaleopakhus; teeth IVPP V11121-2 are CMT indeterminate, exact locality unknown. Kalazha aliases Karaza/Kalaza/Hongshan are discussed; Junggar-basin age correlations do not independently fix Turpan dates." }, "klamel2020": { "title": "Moore et al. 2020, Osteology of Klamelisaurus gobiensis, JSP 18:1299–1393", "doi": "10.1080/14772019.2020.1759706", "url": "https://discovery.ucl.ac.uk/id/eprint/10101710/", "access": "Author institutional repository abstract inspected. Linked 29MB accepted manuscript exceeded web content limit; shell download 403. Full text not inspected in this task.", "ref": "turn306view2", "evidence": "Revision independently confirms Klamelisaurus from Middle–Late Jurassic Shishugou of northwest China. Detailed Jiangjunmiao/lower-Shishugou locality uses Bellusaurus 2018 primary treatment and frozen PBDB row, not unseen 2020 manuscript." }, "chuanjie2011": { "title": "Sekiya 2011, Re-examination of Chuanjiesaurus anaensis, Memoir Fukui Prefectural Dinosaur Museum 10:1–54", "url": "https://www.dinosaur.pref.fukui.jp/archive/memoir/memoir010-001.pdf", "access": "Complete 54-page publisher PDF downloaded and pdftotext inspected, printed pp.2–5. Web timed out; shell succeeded.", "ref": "turn304search38", "local_file": "/workspace/scratch/df61339eaede/mamenchi-c-source/chuanjiesaurus2011.pdf", "evidence": "Type material is in situ at Ana Village, Chuanjie Town, Lufeng County, Yunnan, Chuanjie Formation. Former Upper Lufeng members were separated into Chuanjie/Laoluocun/Madishan/Anning formations. LCD9701-I was described as referred individual beside holotype, subsequently reassigned to Analong." }, "analong2020": { "title": "Ren et al. online2020/published2021, A revision of referred Chuanjiesaurus specimen, Historical Biology 33:1872–1887", "doi": "10.1080/08912963.2020.1747450", "url": "https://www.tandfonline.com/doi/abs/10.1080/08912963.2020.1747450", "access": "Primary publisher indexed abstract inspected; full page 403.", "ref": "turn304search25", "evidence": "LFGT LCD9701-1 from Middle Jurassic Chuanjie Formation, Yunnan, is differentiated from Chuanjiesaurus holotype; former referred specimen now Analong. This affects specimen attribution, not evidence for a new formation/locality." }, "dong1983": { "title": "Dong, Zhou and Zhang 1983, Dinosaurs from Jurassic of Sichuan, Palaeontologia Sinica New Series C", "url": "https://naturalhistory.si.edu/sites/default/files/media/translated_publications/Dong%26amp%3B_83.pdf", "access": "Complete 151-page English translation of primary monograph hosted by Smithsonian; printed pp.14,29–30,52–54 inspected.", "ref": "turn306view4", "evidence": "Wujiaba dam quarry, Zigong County, Sichuan Basin, was excavated in 1974 and placed at base of Upper Shaximiao. Material selected from this quarry was named Zigongosaurus in 1976; the monograph reassigns much material to Omeisaurus, and treats some paratype material under separately based Omeisaurus fuxiensis. Preserve locality while disclosing uncertain specimen/taxon attribution." }, "zigong1976_unread": { "title": "Hou, Zhou and Chao 1976, New discovery of sauropod dinosaurs from Sichuan, Vertebrata PalAsiatica 14(3)", "url": "https://www.ivpp.cas.cn/cbw/gjzdwxb/xbwzxz/200905/W020090813376971757825.pdf", "access": "Original publisher PDF found through primary indexed Chinese naming passage; repeated web timeout and shell HTTP502. Full paper not inspected.", "ref": "turn321search17", "evidence": "Publisher-indexed passage identifies the new Zigongosaurus fuxiensis from Zigong sauropod material. Type specimen number and every original referral are not independently verified here." }, "yuan2006_unread": { "title": "Lü et al. 2006, New Eusauropod Dinosaur from Yuanmou of Yunnan Province, China, Acta Geologica Sinica English Edition 80:1–10", "doi": "10.1111/j.1755-6724.2006.tb00788.x", "url": "https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1755-6724.2006.tb00788.x", "access": "Primary publisher metadata indexed; direct publisher 403, ResearchGate request-only. Full original not inspected.", "ref": "turn309search0", "evidence": "Bibliographic original is secure; exact holotype inventory/discovery year not derived from unseen paper." }, "nebulas2015": { "title": "Xing et al. online2013/published2015, A new basal eusauropod from Middle Jurassic Yunnan, APP60:145–154", "doi": "10.4202/app.2012.0151", "url": "https://www.app.pan.pl/archive/published/app60/app20120151.pdf", "access": "Complete 10-page publisher PDF inspected; printed pp.150–151 and Table1 p.152.", "ref": "turn340view1", "evidence": "Yuanmousaurus and Eomamenchisaurus occur in Zhanghe Formation, Yunnan. Their diagnosis/distinction is questioned: Yuanmousaurus cannot clearly be distinguished from Eomamenchisaurus and Mamenchisaurus from known postcrania. The paper explicitly calls for future revision rather than establishing formal synonymy." } }, "cases": [ { "genus": "Bellusaurus", "genusId": "54863", "frozen_rows": [ { "genusId": "54863", "genus": "Bellusaurus", "occurrenceId": "522076", "collectionId": "53670", "identifiedName": "Bellusaurus sui n. gen. n. sp.", "acceptedName": "Bellusaurus sui", "qualified": false, "occurrenceReferenceId": "9264", "collectionReferenceId": "9264", "cc": "CN", "state": "Xinjiang", "county": "", "formation": "Shishugou", "member": "Upper", "geological_group": "", "collection_name": "Konglonggou, IVPP Loc. 83003", "collection_aka": "Dinosaur ravine, Dinosaur Valley, Bellusaurus type; Kelameili.", "geogscale": "small collection", "stratscale": "bed", "stratcomments": "base of the upper beds of the Shishugou Formation, between two tuffs", "geogcomments": "Konglonggou (Dinosaur Valley), S of Mt. Kelameili, Junggar Basin" } ], "positive_footprint": { "cc": "CN", "state": "Xinjiang", "formation": "Shishugou", "locality": "Konglonggou (Dinosaur Valley), Junggar Basin", "unit_rank": "formation", "geological_group": null }, "sources": [ "bellus2018" ], "daye_status": "No credible or qualified Daye Group report found in inspected primary accounts and targeted searches. This is a reviewed evidence finding, not a claim of geological impossibility or universal genus absence.", "geography_scope": "Each reviewed raw row and the exact associated positive literature footprint lies outside Xizang; it is a known nonmatch to a displayed combined Daye Group + Xizang + CN clue. Group-only comparison remains unresolved where group metadata is blank.", "footprint_completeness": "Five genera have one frozen genus-linked occurrence each; Zigongosaurus has none. Literature supports known footprints but does not prove every possible fossil occurrence has been exhausted.", "positive_assertion_ids": [ "asian-sauropod-15" ], "recommended_assertion_patch": { "state": "Xinjiang" }, "referral_note": "2003 collection is the reopened type quarry, not a new province or formation." }, { "genus": "Hudiesaurus", "genusId": "58889", "frozen_rows": [ { "genusId": "58889", "genus": "Hudiesaurus", "occurrenceId": "458375", "collectionId": "45172", "identifiedName": "Hudiesaurus sinojapanorum n. gen. n. sp.", "acceptedName": "Hudiesaurus sinojapanorum", "qualified": false, "occurrenceReferenceId": "11762", "collectionReferenceId": "11762", "cc": "CN", "state": "Xinjiang", "county": "Shanshan", "formation": "Kalazha", "member": "", "geological_group": "", "collection_name": "Qiketai, Turpan (Hudiesaurus type locality)", "collection_aka": "", "geogscale": "small collection", "stratscale": "bed", "stratcomments": "Lower part of the Kalazha Formation (Upper Jurassic: upper Kimmeridgian–Tithonian)\r\n\r\n(also referred to as the Karaza, Kalaza, or Hongshan Formation)", "geogcomments": "Langgou, Qiketia area, Shanshan County, Xinjiang; Turpan Basin" } ], "positive_footprint": { "cc": "CN", "state": "Xinjiang", "formation": "Kalazha", "locality": "Qiketai, Shanshan County, Turpan Basin", "unit_rank": "formation", "geological_group": null }, "sources": [ "hudies2021" ], "daye_status": "No credible or qualified Daye Group report found in inspected primary accounts and targeted searches. This is a reviewed evidence finding, not a claim of geological impossibility or universal genus absence.", "geography_scope": "Each reviewed raw row and the exact associated positive literature footprint lies outside Xizang; it is a known nonmatch to a displayed combined Daye Group + Xizang + CN clue. Group-only comparison remains unresolved where group metadata is blank.", "footprint_completeness": "Five genera have one frozen genus-linked occurrence each; Zigongosaurus has none. Literature supports known footprints but does not prove every possible fossil occurrence has been exhausted.", "positive_assertion_ids": [ "asian-sauropod-17" ], "recommended_assertion_patch": { "state": "Xinjiang" }, "referral_note": "Current valid Hudiesaurus material restricted to IVPP V11120; former forelimb is Rhomaleopakhus and four teeth not confidently Hudiesaurus. All are lower Kalazha but exact teeth locality unknown." }, { "genus": "Zigongosaurus", "genusId": "66512", "frozen_rows": [], "positive_footprint": { "cc": "CN", "state": "Sichuan", "formation": "Upper Shaximiao", "locality": "Wujiaba dam quarry, Zigong County, Sichuan Basin", "unit_rank": "formation", "geological_group": null }, "sources": [ "dong1983" ], "daye_status": "No credible or qualified Daye Group report found in inspected primary accounts and targeted searches. This is a reviewed evidence finding, not a claim of geological impossibility or universal genus absence.", "geography_scope": "Each reviewed raw row and the exact associated positive literature footprint lies outside Xizang; it is a known nonmatch to a displayed combined Daye Group + Xizang + CN clue. Group-only comparison remains unresolved where group metadata is blank.", "footprint_completeness": "Five genera have one frozen genus-linked occurrence each; Zigongosaurus has none. Literature supports known footprints but does not prove every possible fossil occurrence has been exhausted.", "positive_assertion_ids": [ "asian-sauropod-18" ], "recommended_assertion_patch": { "split_genus": "Zigongosaurus", "state": "Sichuan" }, "referral_note": "No genus-linked PBDB occurrences. Keep PBDB inclusion and hidden-answer blocker; do not equate 1983 Omeisaurus fuxiensis type with original Zigongosaurus type or transfer all other Omeisaurus localities." }, { "genus": "Klamelisaurus", "genusId": "66626", "frozen_rows": [ { "genusId": "66626", "genus": "Klamelisaurus", "occurrenceId": "1107999", "collectionId": "140200", "identifiedName": "Klamelisaurus gobiensis n. gen. n. sp.", "acceptedName": "Klamelisaurus gobiensis", "qualified": false, "occurrenceReferenceId": "13896", "collectionReferenceId": "13896", "cc": "CN", "state": "Xinjiang", "county": "", "formation": "Shishugou", "member": "Lower", "geological_group": "", "collection_name": "Kelamaili, 35 km N of Jiangjunmiao (IVPP)", "collection_aka": "", "geogscale": "small collection", "stratscale": "bed", "stratcomments": "lower beds of the Shishugou Formation (top of what was formerly called the \"Wucaiwan Formation\")", "geogcomments": "35 km N of Jiangjunmiao,S of Kelamailishan Mtns., Jiangjun Gebi, eastern Junggar Basin, Xinjiang" } ], "positive_footprint": { "cc": "CN", "state": "Xinjiang", "formation": "Shishugou", "locality": "Kelamaili region, near Jiangjunmiao, eastern Junggar Basin", "unit_rank": "formation", "geological_group": null }, "sources": [ "bellus2018", "klamel2020" ], "daye_status": "No credible or qualified Daye Group report found in inspected primary accounts and targeted searches. This is a reviewed evidence finding, not a claim of geological impossibility or universal genus absence.", "geography_scope": "Each reviewed raw row and the exact associated positive literature footprint lies outside Xizang; it is a known nonmatch to a displayed combined Daye Group + Xizang + CN clue. Group-only comparison remains unresolved where group metadata is blank.", "footprint_completeness": "Five genera have one frozen genus-linked occurrence each; Zigongosaurus has none. Literature supports known footprints but does not prove every possible fossil occurrence has been exhausted.", "positive_assertion_ids": [ "asian-sauropod-16" ], "recommended_assertion_patch": { "state": "Xinjiang" }, "referral_note": "Former Wucaiwan Formation nomenclature is now lower Shishugou; no cross-basin group membership inferred. Adult Bellusaurus hypothesis not treated as established synonymy." }, { "genus": "Chuanjiesaurus", "genusId": "71525", "frozen_rows": [ { "genusId": "71525", "genus": "Chuanjiesaurus", "occurrenceId": "651334", "collectionId": "70438", "identifiedName": "Chuanjiesaurus anaensis n. gen. n. sp.", "acceptedName": "Chuanjiesaurus anaensis", "qualified": false, "occurrenceReferenceId": "16660", "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)" } ], "positive_footprint": { "cc": "CN", "state": "Yunnan", "formation": "Chuanjie", "locality": "Ana Village, Chuanjie Town, Lufeng County, Lufeng Basin", "unit_rank": "formation", "geological_group": null }, "sources": [ "chuanjie2011", "analong2020" ], "daye_status": "No credible or qualified Daye Group report found in inspected primary accounts and targeted searches. This is a reviewed evidence finding, not a claim of geological impossibility or universal genus absence.", "geography_scope": "Each reviewed raw row and the exact associated positive literature footprint lies outside Xizang; it is a known nonmatch to a displayed combined Daye Group + Xizang + CN clue. Group-only comparison remains unresolved where group metadata is blank.", "footprint_completeness": "Five genera have one frozen genus-linked occurrence each; Zigongosaurus has none. Literature supports known footprints but does not prove every possible fossil occurrence has been exhausted.", "positive_assertion_ids": [], "recommended_assertion_patch": null, "referral_note": "Lfch1001 holotype remains Chuanjiesaurus. LCD9701-I former referred specimen is Analong per Ren2020/2021; still same quarry/Chuanjie, so no new genus footprint invented." }, { "genus": "Yuanmousaurus", "genusId": "84655", "frozen_rows": [ { "genusId": "84655", "genus": "Yuanmousaurus", "occurrenceId": "602115", "collectionId": "64016", "identifiedName": "Yuanmousaurus jiangyiensis n. gen. n. sp.", "acceptedName": "Yuanmousaurus jiangyiensis", "qualified": false, "occurrenceReferenceId": "18457", "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" } ], "positive_footprint": { "cc": "CN", "state": "Yunnan", "formation": "Zhanghe", "locality": "Banqing Houshanliangzi, Jiangyi, Yuanmou County", "unit_rank": "formation", "geological_group": null }, "sources": [ "nebulas2015", "yuan2006_unread" ], "daye_status": "No credible or qualified Daye Group report found in inspected primary accounts and targeted searches. This is a reviewed evidence finding, not a claim of geological impossibility or universal genus absence.", "geography_scope": "Each reviewed raw row and the exact associated positive literature footprint lies outside Xizang; it is a known nonmatch to a displayed combined Daye Group + Xizang + CN clue. Group-only comparison remains unresolved where group metadata is blank.", "footprint_completeness": "Five genera have one frozen genus-linked occurrence each; Zigongosaurus has none. Literature supports known footprints but does not prove every possible fossil occurrence has been exhausted.", "positive_assertion_ids": [ "asian-sauropod-14" ], "recommended_assertion_patch": { "state": "Yunnan" }, "referral_note": "Exact quarry is from frozen occurrence602115/collection64016. Primary APP2015 confirms formation/regional assemblage but questions diagnosis. Original2006 full text unavailable; no new synonymy or discovery date asserted." } ], "implementation_constraints": [ "Do not fill geological_group with an invented alternative group or treat missing geological_group alone as absence.", "Do not infer whole-genus absence from one type locality.", "Retain any subsequently found credible or qualified Xizang/Daye occurrence.", "Keep Zigongosaurus no-genus-linked-occurrence hidden-answer blocker.", "Taxonomic uncertainties in Yuanmousaurus, Bellusaurus position and Zigongosaurus are separate from geography and do not justify roster or tree cuts in this task." ] }