{ "version": "roster-policy-2026-10-11-v14", "classificationSnapshot": "2026-10-09", "scope": { "rootPbdbId": "52775", "excludedBirdSubtrees": [ { "id": "36616", "name": "Aves" }, { "id": "53211", "name": "Avialae" } ] }, "principles": [ "Use self-accepted regular body genera in the captured PBDB classification within the stated non-avian scope.", "Scientific disagreement alone does not exclude an accepted genus.", "Gameplay ancestry amendments must be separately documented and sourced.", "Roster inclusion does not establish daily-answer eligibility.", "Evidence-backed metadata corrections and identity holds are explicit local decisions; preserve the frozen source and do not silently merge fossil evidence.", "PBDB governs included genus identities; other information may follow referenced, valid literature with documented amendments.", "A primary-source-verified genus-rank mismatch may be held out by explicit identity, with the original PBDB record preserved and the exception documented.", "Explicit source-backed exceptions may exclude unavailable informal names, nonindependent historical identities and exceptionally dubious material; uncertain age or scientific disagreement alone is insufficient." ], "decisions": [ { "id": "early-ornithischian-boundary", "decision": "retain", "stage": "approved for expanded-roster inclusion; not added to the 36-genus prototype", "rationale": "All 13 candidates meet the PBDB accepted-genus and scope rules in the captured snapshot. Retain their database identities and placements; record scientific disagreement as a journal note.", "dailyEligibility": "pending reviewed placement and clue evidence", "genera": [ { "id": "470681", "name": "Amanasaurus", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=470681" }, { "id": "164324", "name": "Asilisaurus", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=164324" }, { "id": "202339", "name": "Diodorus", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=202339" }, { "id": "68125", "name": "Eucoelophysis", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=68125" }, { "id": "466003", "name": "Gamatavus", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=466003" }, { "id": "398796", "name": "Kwanasaurus", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=398796" }, { "id": "38288", "name": "Lewisuchus", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38288" }, { "id": "280555", "name": "Lutungutali", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=280555" }, { "id": "38729", "name": "Pisanosaurus", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38729" }, { "id": "119884", "name": "Sacisaurus", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=119884" }, { "id": "81775", "name": "Silesaurus", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=81775" }, { "id": "378441", "name": "Soumyasaurus", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=378441" }, { "id": "38721", "name": "Technosaurus", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38721" } ] }, { "id": "saurornithoides-identity", "decision": "select canonical record", "stage": "approved for expanded-roster inclusion; not added to the 36-genus prototype", "rationale": "Use Saurornithoides Osborn 1924 (PBDB 38573), the troodontid genus treated in the published taxonomic review. Hold the same-name Nopcsa 1928 record (PBDB 69227) out of the expanded roster for nomenclatural review. This is an explicit identity selection, not a merger of records or their occurrence evidence.", "dailyEligibility": "pending reviewed placement and clue evidence", "genera": [ { "id": "38573", "name": "Saurornithoides", "attribution": "Osborn 1924", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38573" } ], "heldRecords": [ { "id": "69227", "name": "Saurornithoides", "attribution": "Nopcsa 1928", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=69227", "reason": "Same display name, different source identity and lineage; withheld for nomenclatural review, not merged with Osborn." } ], "references": [ { "label": "Norell et al. 2009 \u00b7 Saurornithoides taxonomic review", "url": "https://www.geo.utexas.edu/faculty/rowe/Publications/pdf/068%20Norell%20et%20al%202009.pdf" } ] }, { "id": "fossil-genera-extant-flags", "decision": "retain with documented metadata correction", "stage": "approved for expanded-roster inclusion; not added to the 36-genus prototype", "rationale": "The original descriptions concern Late Cretaceous fossil dinosaurs, contradicting the captured extant flag. Correct only that flag locally; retain PBDB identities and ancestry. Extinct status is not used as a substitute for the stated bird-subtree exclusions.", "dailyEligibility": "pending reviewed placement and clue evidence", "genera": [ { "id": "444043", "name": "Kansaignathus", "attribution": "Averianov and Lopatin 2021", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=444043", "metadataOverrides": { "extantFlag": { "sourceValue": "extant", "value": "extinct" } } }, { "id": "443993", "name": "Kurupi", "attribution": "Iori et al. 2021", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=443993", "metadataOverrides": { "extantFlag": { "sourceValue": "extant", "value": "extinct" } } } ], "references": [ { "label": "Averianov and Lopatin 2021 \u00b7 Kansaignathus description", "url": "https://doi.org/10.1134/S1028334X21070047" }, { "label": "Iori et al. 2021 \u00b7 Kurupi description", "url": "https://doi.org/10.1016/j.jsames.2021.103551" } ] }, { "id": "ancistrodon-record-mismatch", "decision": "quarantine source record", "stage": "held out of the expanded roster pending identity review; absent from the live sample", "rationale": "PBDB 154360 is attributed to Huxley 1865 and placed directly under Dinosauria, but its only captured occurrence 434618 is Ancistrodon libycus from the Ypresian of Saudi Arabia. Priem treats that species name among fossil fish. Modern work treats Huxley\u2019s Ankistrodon indicus as an Early Triassic proterosuchid archosauriform. The record appears to combine distinct historical names; the exact database repair is unresolved.", "dailyEligibility": "ineligible while quarantined", "genera": [], "heldRecords": [ { "id": "154360", "name": "Ancistrodon", "attribution": "Huxley 1865", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=154360", "reason": "Source identity, Dinosauria placement and linked fossil evidence conflict. Hold out of guesses and answers pending identity repair; do not merge with Ankistrodon or infer a dinosaur age from the fish occurrence." } ], "references": [ { "label": "Priem 1914 \u00b7 fossil fish discussion, Smithsonian translation", "url": "https://naturalhistory.si.edu/sites/default/files/media/translated_publications/Priem_14.pdf" }, { "label": "Ezcurra et al. 2023 \u00b7 Panchet archosauriform review", "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC10598453/" } ] }, { "id": "shuvuuia-identity", "decision": "select canonical record", "approvedDate": "2026-10-10", "stage": "approved for expanded-roster inclusion; not added to the 36-genus prototype", "rationale": "Use only Shuvuuia (66043). Both PBDB spellings cite the same original description; primary systematic treatment and spelling-correction opinions support one genus. The user approved this explicit identity exception. Hold Shuuvuia (307772) out as a duplicate spelling identity, without transferring occurrence evidence or ancestry.", "dailyEligibility": "pending reviewed placement and clue evidence", "genera": [ { "id": "66043", "name": "Shuvuuia", "attribution": "Chiappe et al. 1998", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=66043" } ], "heldRecords": [ { "id": "307772", "name": "Shuuvuia", "attribution": "Chiappe et al. 1998", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=307772", "reason": "Duplicate spelling identity of the same described genus; excluded from independent guesses and answers. Original record preserved, with no occurrence or ancestry merge." } ], "references": [ { "label": "Chiappe et al. 1998 \u00b7 original description", "url": "https://doi.org/10.1038/32642" }, { "label": "Captured PBDB identities and systematic evidence", "url": "shuvuuia-review.html" } ] }, { "id": "hylosaurus-spelling-identity", "decision": "select canonical record", "approvedDate": "2026-10-10", "stage": "approved for expanded-roster inclusion; not added to the 36-genus prototype", "rationale": "Use Hylaeosaurus (38822). The Hylosaurus record (66560) has the same Mantell 1833 attribution and original reference, no linked occurrences or child species, and a selected opinion explicitly marked misspelling. This is an approved spelling-identity hold; distinguish the database Mantell record from Fitzinger\u2019s later Hylosaurus mantelli, treated as a nomen nudum by Raven. Preserve both records without transferring fossil evidence or ancestry.", "dailyEligibility": "pending reviewed placement and clue evidence", "genera": [ { "id": "38822", "name": "Hylaeosaurus", "attribution": "Mantell 1833", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38822" } ], "heldRecords": [ { "id": "66560", "name": "Hylosaurus", "attribution": "Mantell 1833", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=66560", "reason": "Duplicate spelling identity; not an independent guess or answer. No occurrence or ancestry merge." } ], "references": [ { "label": "Raven \u00b7 Hylaeosaurus taxonomic history, section 2.4", "url": "https://cris.brighton.ac.uk/ws/portalfiles/portal/23893138/Raven_PhD_Thesis.pdf" }, { "label": "Captured database evidence and identity review", "url": "nodosaur-identity-review.html" } ] }, { "id": "hoplosaurus-identity-hold", "decision": "quarantine source record", "approvedDate": "2026-10-10", "stage": "held out of the expanded roster; formal synonymy and exact database repair remain under review", "rationale": "Retain Struthiosaurus (38830); hold Hoplosaurus Seeley 1881 (53046) out as a separate genus. The Dinosauria distribution chapter (2004) includes Hoplosaurus ischyrus within Struthiosaurus austriacus. PBDB still accepts Hoplosaurus and also attaches older Pelorosaurus synonymy opinions apparently involving a separate sauropod spelling usage. The full 2001 taxonomic reappraisal has not been inspected; do not assert a completed formal synonymy or database repair. This approved hold does not merge fossils, names or ancestry.", "dailyEligibility": "ineligible while held; Struthiosaurus eligibility separately pending", "genera": [ { "id": "38830", "name": "Struthiosaurus", "attribution": "Bunzel 1870", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38830" } ], "heldRecords": [ { "id": "53046", "name": "Hoplosaurus", "attribution": "Seeley 1881", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=53046", "reason": "Historical Austrian name associated with Struthiosaurus; mixed sauropod-name opinions and exact synonymy still under review. No automatic merge or evidence transfer." } ], "references": [ { "label": "Weishampel et al. 2004 \u00b7 Dinosaur distribution, Austrian Gosau entry", "url": "https://www.researchgate.net/publication/234025996_Dinosaur_Distribution" }, { "label": "Upchurch et al. 2011 \u00b7 separate Oplosaurus spelling usage", "url": "https://www.researchgate.net/publication/278025152_Sauropod_dinosaurs" }, { "label": "Captured database evidence and review limits", "url": "nodosaur-identity-review.html" } ] }, { "id": "eosauropoda-rank-mismatch", "decision": "exclude rank-mismatched source identity", "approvedDate": "2026-10-10", "stage": "approved exclusion from expanded guesses and answers; absent from the live 36-genus sample", "rationale": "PBDB 370667 self-accepts Eosauropoda Bonaparte 1986 at genus rank. The cited original publication instead treats Eosauropoda as a suprageneric grouping containing named genera. Exclude this rank-mismatched identity from guesses and answers. Preserve the source record; no genus, occurrence or ancestry transfer, and no new working-tree group is introduced.", "dailyEligibility": "ineligible: this identity represents a group rather than a genus", "genera": [], "heldRecords": [ { "id": "370667", "name": "Eosauropoda", "attribution": "Bonaparte 1986", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=370667", "reason": "Primary-source-verified rank mismatch; excluded as an independent genus guess or answer. Actual dinosaur genera remain included under the existing rules." } ], "references": [ { "label": "Bonaparte 1986 \u00b7 Smithsonian-hosted translation, pp. 38\u201339 and figure 65", "url": "https://naturalhistory.si.edu/sites/default/files/media/translated_publications/Bonaparte_86b.pdf" }, { "label": "Captured PBDB identity and original locality review", "url": "priority-proposals-review.html" } ] }, { "id": "nemegtomaia-replacement-name", "decision": "select canonical replacement-name record", "approvedDate": "2026-10-10", "stage": "approved for expanded-roster inclusion; not added to the live 36-genus prototype", "rationale": "Use Nemegtomaia (95490) as the single dinosaur genus identity. L\u00fc et al. 2005 formally replaced Nemegtia L\u00fc et al. 2004 because that name was preoccupied by an ostracod. PBDB separately accepts the empty Nemegtia record (68043), but already links the original type occurrence to Nemegtomaia. Hold the former-name identity out of independent guesses and answers. Preserve all three canonical occurrences and the supported Nemegt and Baruungoyot profiles, including unresolved specimen-level horizon uncertainty. No occurrence transfer or ancestry amendment is introduced.", "dailyEligibility": "pending reviewed working tree and clue evidence", "genera": [ { "id": "95490", "name": "Nemegtomaia", "attribution": "L\u00fc et al. 2005", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=95490" } ], "heldRecords": [ { "id": "68043", "name": "Nemegtia", "attribution": "L\u00fc et al. 2004", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=68043", "reason": "Preoccupied former name formally replaced by Nemegtomaia; excluded as an independent guess and answer. Preserve both source identities and all fossil evidence." } ], "references": [ { "label": "L\u00fc et al. 2005 \u00b7 formal replacement name", "url": "https://www.kahaku.go.jp/albums/abm.php?d=4746&f=abm00002251.pdf&n=BNSM_C3106.pdf" }, { "label": "Fanti, Currie & Badamgarav 2012 \u00b7 both supported formations", "url": "https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0031330" }, { "label": "Captured identities and before/after locality checks \u00b7 JSON", "url": "nemegtomaia-review.json" } ] }, { "id": "adamantisaurus-locality-profile", "decision": "retain with referenced locality supplement", "approvedDate": "2026-10-10", "stage": "approved addition to expanded-roster locality review; not added to the live sample", "rationale": "Retain PBDB Adamantisaurus 70544 and preserve its source identity, ancestry and empty linked-occurrence set. Add a distinct positive literature assertion for the holotype at Fl\u00f3rida Paulista, S\u00e3o Paulo, Brazil, in the broadly defined Adamantina Formation of the Bauru Group. The 2022 review leaves Vale do Rio do Peixe versus Presidente Prudente placement uncertain. Record Late Cretaceous as the supported broad age description, with no numerical age, stage, diet or source-occurrence override.", "dailyEligibility": "pending reviewed working tree and clue evidence", "evidenceProfile": "adamantisaurus-type-locality", "genera": [ { "id": "70544", "name": "Adamantisaurus", "attribution": "Santucci and Bertini 2006", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=70544" } ], "references": [ { "label": "Santucci & Bertini 2006 \u00b7 type description", "url": "https://repositorio.unesp.br/bitstreams/f9502a4e-cced-45c6-9397-9994c733c70e/download" }, { "label": "Langer et al. 2022 \u00b7 broad formation and uncertain alternatives", "url": "https://research.unl.pt/ws/portalfiles/portal/53183908/A_Bacia_Bauru_no_Estado_de_S_o_Paulo_e_seus_tetr_podes.pdf" }, { "label": "2025 Bauru review \u00b7 locality corroboration and catalogue-number caution", "url": "https://www.andeangeology.cl/index.php/revista1/article/view/V52n3-3797/html" }, { "label": "Approved profile and complete before/after checks \u00b7 JSON", "url": "adamantisaurus-review.json" } ] }, { "id": "eucentrosaurus-identity-review", "decision": "hold nonindependent identity", "approvedDate": "2026-10-10", "stage": "approved expanded-roster exception; live sample unchanged", "rationale": "Replacement name for the same nominal type species already represented by Centrosaurus; no independent answer animal.", "genera": [ { "id": "38854", "name": "Centrosaurus", "attribution": "Lambe 1905", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38854" } ], "heldRecords": [ { "id": "94334", "name": "Eucentrosaurus", "attribution": "Chure and McIntosh 1989", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=94334" } ], "dailyEligibility": "excluded: no independent answer identity", "uncertainties": [ "Original1989 naming page unavailable; identity corroborated in two primary scholarly revisions.", "Do not claim a specific ICZN conservation ruling or settle authority-date discrepancy beyond verified evidence." ], "references": [ { "label": "Olshevsky1991. A revision of the parainfraclass Archosauria Cope1869, excluding advanced Crocodylia. MesozoicMeanderings2.", "url": "https://www.miketaylor.org.uk/tmp/Olshevsky_1991_A_revision_of_the_parainfraclass_Archosauria_Cope_1869_excluding_the_advanced_Crocodylia.pdf" }, { "label": "Nessov1995. Dinosaurs of northern Eurasia. Smithsonian English translation.", "url": "https://naturalhistory.si.edu/sites/default/files/media/translated_publications/Nessov%252095.pdf" } ], "proposedSearchAliases": [ { "fromId": "94334", "toId": "38854", "scope": "future expanded roster; authority-qualified; no fossil transfer" } ] }, { "id": "proiguanodon-identity-review", "decision": "hold nonindependent identity", "approvedDate": "2026-10-10", "stage": "approved expanded-roster exception; live sample unchanged", "rationale": "Original source uses this as a grouping within Iguanodon, not a separate described genus. It includes more than one later genus, so a single genus alias would be misleading.", "genera": [], "heldRecords": [ { "id": "383092", "name": "Proiguanodon", "attribution": "Van Den Broeck 1900", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=383092" } ], "dailyEligibility": "excluded: no independent answer identity", "uncertainties": [ "Do not assign Bernissart because it occurs in the paper title.", "No one canonical target: constituent species are now associated with Cumnoria52998 and Barilium167439; these modern mappings are context, not an implemented alias." ], "references": [ { "label": "Van den Broeck1900. Les d\u00e9p\u00f4ts \u00e0 Iguanodons de Bernissart. M\u00e9mSocBelgeG\u00e9ol14:39\u2013112.", "url": "https://biblio.naturalsciences.be/rbins-publications/bulletin-de-la-societe-belge-de-geologie/014-1900/bsbg_14_1900_mem_p039-112.pdf" } ] }, { "id": "proyandusaurus-identity-review", "decision": "hold nonindependent identity", "approvedDate": "2026-10-10", "stage": "approved expanded-roster exception; live sample unchanged", "rationale": "Both publications expressly identify the same nominal Yandusaurus multidens species; this is not evidence for a second fossil animal.", "genera": [ { "id": "71336", "name": "Hexinlusaurus", "attribution": "Barrett et al. 2005", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=71336" } ], "heldRecords": [ { "id": "435994", "name": "Proyandusaurus", "attribution": "Knoll 1999", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=435994" } ], "dailyEligibility": "excluded: no independent answer identity", "uncertainties": [ "2005 full original not obtained; same-species naming statement is explicit in the primary abstract.", "No locality transfer needed for a held duplicate." ], "references": [ { "label": "Knoll1999. The family Fabrosauridae. IV European Workshop on Vertebrate Palaeontology, Programme and Abstracts, p65.", "url": "https://www.researchgate.net/publication/259872954_IV_EUROPEAN_WORKSHOP_ON_VERTEBRATE_PALAEONTOLOGY_Programme_and_Abstracts_Field_guide" }, { "label": "Barrett, Butler & Knoll2005. Small-bodied ornithischian dinosaurs from the Middle Jurassic of Sichuan, China. JVP25:823\u2013834.", "url": "https://digital.csic.es/handle/10261/12933" } ], "proposedSearchAliases": [ { "fromId": "435994", "toId": "71336", "scope": "future expanded roster; authority-qualified; no fossil transfer" } ] }, { "id": "nectosaurus-identity-review", "decision": "hold nonindependent identity", "approvedDate": "2026-10-10", "stage": "approved expanded-roster exception; live sample unchanged", "rationale": "This is the1910 dinosaur usage for Brown\u2019s navajovius skull, not marine Nectosaurus Merriam1905. PBDB itself records the usage as a recombination of the accepted Kritosaurus navajovius species.", "genera": [ { "id": "53195", "name": "Kritosaurus", "attribution": "Brown 1910", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=53195" } ], "heldRecords": [ { "id": "382945", "name": "Nectosaurus", "attribution": "Versluys 1910", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=382945" } ], "dailyEligibility": "excluded: no independent answer identity", "uncertainties": [ "Brown1910 full original not obtained in this bounded run. Correct original Versluys dinosaur usage was read, and exact identity bridge comes from fresh PBDB species opinions rather than secondary genus lists.", "Do not merge into the marine reptile genus or claim publication-priority details not independently established." ], "references": [ { "label": "Versluys1910. Streptostylie bei Dinosauriern, nebst Bemerkungen \u00fcber die Verwandtschaft der V\u00f6gel und Dinosaurier. ZoolJahrbAnat30:175\u2013260.", "url": "https://archive.org/download/zoologischejahrb1030jena/zoologischejahrb1030jena_djvu.txt" }, { "label": "PBDB fresh species53196 identity/opinions snapshot retrieved2026-10-10.", "url": "https://paleobiodb.org/data1.2/taxa/opinions.json?base_id=53196&op_type=all&show=basis,ref" } ], "proposedSearchAliases": [ { "fromId": "382945", "toId": "53195", "scope": "future expanded roster; authority-qualified; no fossil transfer" } ] }, { "id": "galve-shared-holotype", "decision": "hold duplicate identity", "approvedDate": "2026-10-10", "stage": "approved expanded-roster exception; live sample unchanged", "rationale": "Both names denote the same holotype CLH-16. Galvesaurus is used by 2012/2019/2024 revisions and has the richer PBDB record, but priority dispute remains disclosed, not judicially resolved.", "genera": [ { "id": "81693", "name": "Galvesaurus", "attribution": "Barco et al. 2005", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=81693" } ], "heldRecords": [ { "id": "67715", "name": "Galveosaurus", "attribution": "S\u00e1nchez-Hern\u00e1ndez 2005", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=67715" } ], "dailyEligibility": "excluded duplicate; canonical answer still pending review", "uncertainties": [ "Naming priority disputed; topology changes among analyses; shared specimen identity secure." ], "references": [ { "label": "S\u00e1nchez-Hern\u00e1ndez 2005, Galveosaurus herreroi, Zootaxa 1034:1\u201320", "url": "https://mapress.com/zootaxa/2005f/z01034p020f.pdf" }, { "label": "S\u00e1nchez-Hern\u00e1ndez 2006, nomenclatural-priority discussion, Zootaxa 1201:63\u201368", "url": "https://www.mapress.com/zootaxa/2006f/z01201p068f.pdf" }, { "label": "Barco and Canudo 2012, On the phylogenetic position of the sauropod Galvesaurus, and other reflections", "url": "https://www.researchgate.net/publication/235930354_On_the_phylogenetic_position_of_the_sauropod_Galvesaurus_and_other_reflections" }, { "label": "P\u00e9rez-Pueyo et al. 2019, New contributions to the phylogenetic position of the sauropod Galvesaurus herreroi, Bolet\u00edn Geol\u00f3gico y Minero 130(3):375\u2013392", "url": "https://web.igme.es/boletin/2019/130_3/BGM_130-3_Art-1.pdf" }, { "label": "Mocho et al. 2024, Garumbatitan morellensis, Zoological Journal of the Linnean Society 201(1):214 onward", "url": "https://academic.oup.com/zoolinnean/article/201/1/214/7281765" } ], "proposedSearchAliases": [ { "fromId": "67715", "toId": "81693", "scope": "future expanded roster; priority dispute disclosed; no fossil transfer" } ] }, { "id": "microsaurops-identity-review", "decision": "hold for identity review", "approvedDate": "2026-10-10", "stage": "approved expanded-roster exception; live sample unchanged", "rationale": "Published revision1991 treats it as a spelling/replacement artifact under Microcoelus, not an independently described animal.", "genera": [], "heldRecords": [ { "id": "83019", "name": "Microsaurops", "attribution": "Kuhn 1964", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=83019" } ], "dailyEligibility": "excluded pending independent identity evidence", "uncertainties": [ "Original Kuhn entry not read; PBDB1964 versus revision1963 discrepancy disclosed. No formal Saltasaurus synonym asserted and no new genus or tree forced." ], "references": [ { "label": "Olshevsky 1991, A revision of the parainfraclass Archosauria Cope, 1869, excluding the advanced Crocodylia, p.145", "url": "https://www.miketaylor.org.uk/tmp/Olshevsky_1991_A_revision_of_the_parainfraclass_Archosauria_Cope_1869_excluding_the_advanced_Crocodylia.pdf" }, { "label": "Chure and McIntosh 1989, A bibliography of the Dinosauria (exclusive of the Aves), Annals of the Carnegie Museum", "url": "https://file.iflora.cn/fastdfs/group3/M00/00/EE/wKhnrV3GtuGAOXLpAMQOBlhmY8o183.pdf" }, { "label": "Kuhn 1964, Ungel\u00f6ste Probleme der Stammesgeschichte der Amphibien und Reptilien, Jahreshefte des Vereins f\u00fcr vaterl\u00e4ndische Naturkunde in W\u00fcrttemberg 118/119:293\u2013325", "url": "https://paleobiodb.org/data1.2/refs/single.json?id=36192" } ] }, { "id": "dachongosaurus-inclusion-exception", "decision": "exclude pending evidence", "approvedDate": "2026-10-10", "stage": "approved explicit inclusion exception; excluded from expanded guesses and answers; absent from live sample", "rationale": "Explicit nomen nudum for Dachungosaurus, with Dachongosaurus alternative spelling. Revision states remains undescribed although an in-situ photograph was published. A photographed skeleton alone is not an independently diagnosed genus.", "genera": [], "heldRecords": [ { "id": "313245", "name": "Dachongosaurus", "attribution": "Zhao 1985", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=313245", "reason": "unavailable informal name" } ], "dailyEligibility": "excluded while identity is held", "reconsideration": "A qualifying formal taxonomic publication that establishes an available name with differentiating characters and appropriate type-species fixation, or a demonstrated later validation. Additional locality or faunal-list mentions alone are insufficient.", "uncertainties": [ "Original Zhao 1985 account not obtained; nomenclatural revision read directly.", "No later validation surfaced in the targeted search; this is not an exhaustive literature search.", "No synonym or occurrence transfer inferred." ], "references": [ { "label": "Olshevsky, G. 1991. A revision of the parainfraclass Archosauria Cope 1869, excluding advanced Crocodylia. Mesozoic Meanderings 2.", "url": "https://www.miketaylor.org.uk/tmp/Olshevsky_1991_A_revision_of_the_parainfraclass_Archosauria_Cope_1869_excluding_the_advanced_Crocodylia.pdf" }, { "label": "iczn13", "url": "https://code.iczn.org/chapter-4-criteria-of-availability/article-13-names-published-after-1930/" } ] }, { "id": "oshanosaurus-inclusion-exception", "decision": "exclude pending evidence", "approvedDate": "2026-10-10", "stage": "approved explicit inclusion exception; excluded from expanded guesses and answers; absent from live sample", "rationale": "Explicit nomen nudum. Revision states remains undescribed and appears in a faunal list. No later formal validation found. Do not assume Eshanosaurus synonymy or automatically redirect.", "genera": [], "heldRecords": [ { "id": "313242", "name": "Oshanosaurus", "attribution": "Zhao 1985", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=313242", "reason": "unavailable informal name" } ], "dailyEligibility": "excluded while identity is held", "reconsideration": "A qualifying formal taxonomic publication that establishes an available name with differentiating characters and appropriate type-species fixation, or a demonstrated later validation. Additional locality or faunal-list mentions alone are insufficient.", "uncertainties": [ "Original Zhao 1985 account not obtained; nomenclatural revision read directly.", "No later validation surfaced in the targeted search; this is not an exhaustive literature search.", "No synonym or occurrence transfer inferred." ], "references": [ { "label": "Olshevsky, G. 1991. A revision of the parainfraclass Archosauria Cope 1869, excluding advanced Crocodylia. Mesozoic Meanderings 2.", "url": "https://www.miketaylor.org.uk/tmp/Olshevsky_1991_A_revision_of_the_parainfraclass_Archosauria_Cope_1869_excluding_the_advanced_Crocodylia.pdf" }, { "label": "iczn13", "url": "https://code.iczn.org/chapter-4-criteria-of-availability/article-13-names-published-after-1930/" } ] }, { "id": "damalasaurus-inclusion-exception", "decision": "exclude pending evidence", "approvedDate": "2026-10-10", "stage": "approved explicit inclusion exception; excluded from expanded guesses and answers; absent from live sample", "rationale": "Explicit nomen nudum. Historical magnus/laticostalis usages do not establish available independently diagnosed genus. Zhao1983 p302 mentions Damalosaurus only as evolutionary example. Geographic disambiguation does not repair nomenclatural availability.", "genera": [], "heldRecords": [ { "id": "313240", "name": "Damalasaurus", "attribution": "Zhao 1985", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=313240", "reason": "unavailable informal name" } ], "dailyEligibility": "excluded while identity is held", "reconsideration": "A qualifying formal taxonomic publication that establishes an available name with differentiating characters and appropriate type-species fixation, or a demonstrated later validation. Additional locality or faunal-list mentions alone are insufficient.", "uncertainties": [ "Original Zhao 1985 account not obtained; nomenclatural revision read directly.", "No later validation surfaced in the targeted search; this is not an exhaustive literature search.", "No synonym or occurrence transfer inferred." ], "references": [ { "label": "Olshevsky, G. 1991. A revision of the parainfraclass Archosauria Cope 1869, excluding advanced Crocodylia. Mesozoic Meanderings 2.", "url": "https://www.miketaylor.org.uk/tmp/Olshevsky_1991_A_revision_of_the_parainfraclass_Archosauria_Cope_1869_excluding_the_advanced_Crocodylia.pdf" }, { "label": "iczn13", "url": "https://code.iczn.org/chapter-4-criteria-of-availability/article-13-names-published-after-1930/" }, { "label": "Zhao1983. Phylogeny and evolutionary stages of Dinosauria. APP28:295-306.", "url": "https://www.app.pan.pl/archive/published/app28/app28-295.pdf" } ] }, { "id": "microdontosaurus-inclusion-exception", "decision": "exclude pending evidence", "approvedDate": "2026-10-10", "stage": "approved explicit inclusion exception; excluded from expanded guesses and answers; absent from live sample", "rationale": "Explicit nomen nudum. Zhao1983 p304 provides only a brief evolutionary example. Geographic and Chaya locality data do not establish nomenclatural availability.", "genera": [], "heldRecords": [ { "id": "65648", "name": "Microdontosaurus", "attribution": "Zhao 1983", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=65648", "reason": "unavailable informal name" } ], "dailyEligibility": "excluded while identity is held", "reconsideration": "A qualifying formal taxonomic publication that establishes an available name with differentiating characters and appropriate type-species fixation, or a demonstrated later validation. Additional locality or faunal-list mentions alone are insufficient.", "uncertainties": [ "Original Zhao 1985 account not obtained; nomenclatural revision read directly.", "No later validation surfaced in the targeted search; this is not an exhaustive literature search.", "No synonym or occurrence transfer inferred." ], "references": [ { "label": "Olshevsky, G. 1991. A revision of the parainfraclass Archosauria Cope 1869, excluding advanced Crocodylia. Mesozoic Meanderings 2.", "url": "https://www.miketaylor.org.uk/tmp/Olshevsky_1991_A_revision_of_the_parainfraclass_Archosauria_Cope_1869_excluding_the_advanced_Crocodylia.pdf" }, { "label": "iczn13", "url": "https://code.iczn.org/chapter-4-criteria-of-availability/article-13-names-published-after-1930/" }, { "label": "Zhao1983. Phylogeny and evolutionary stages of Dinosauria. APP28:295-306.", "url": "https://www.app.pan.pl/archive/published/app28/app28-295.pdf" } ] }, { "id": "ponerosteus-inclusion-exception", "decision": "exclude pending evidence", "approvedDate": "2026-10-10", "stage": "approved explicit inclusion exception; excluded from expanded guesses and answers; absent from live sample", "rationale": "Olshevsky 2000 naming-author statement calls the genus and species nomina dubia and doubtfully dinosaurian. A specimen which cannot securely establish even dinosaur affinity or an independently diagnosable genus is unsuitable as a separate playable genus.", "genera": [], "heldRecords": [ { "id": "92286", "name": "Ponerosteus", "attribution": "Olshevsky 2000", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=92286", "reason": "dubious material" } ], "dailyEligibility": "excluded while identity is held", "reconsideration": "Published modern redescription establishes dinosaur affinity and diagnostic identity from the type or securely associated material.", "uncertainties": [ "Do not claim definitely non-dinosaurian.", "Do not claim the formal 2000 checklist was read.", "Historical locality and period evidence remain in the research record; they do not establish diagnostic identity." ], "references": [ { "label": "Olshevsky, G. 2000. Dinosaur Genera List corrections #141. Dinosaur Mailing List, 10 May 2000. Contemporaneous explanation of the replacement name published in Mesozoic Meanderings 3.", "url": "https://reptilis.net/DML/2000May/msg00176.html" } ] }, { "id": "xuanhuasaurus-inclusion-exception", "decision": "exclude pending evidence", "approvedDate": "2026-10-10", "stage": "approved explicit inclusion exception; excluded from expanded guesses and answers; absent from live sample", "rationale": "Zhao et al. 2006 p467 explicitly labels the earlier Xuanhuasaurus niei nomen dubium while stating no holotype, diagnosis or description was provided. Olshevsky 1991 p159 labels Xuanhuasaurus nomen nudum. An undescribed historical name for the material later formally described as Xuanhuaceratops; retained in the history, not counted as a separate playable genus.", "genera": [ { "id": "153948", "name": "Xuanhuaceratops", "attribution": "Zhao et al. 2006", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=153948" } ], "heldRecords": [ { "id": "313238", "name": "Xuanhuasaurus", "attribution": "Zhao 1985", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=313238", "reason": "undescribed historical identity" } ], "dailyEligibility": "excluded while identity is held", "reconsideration": "Original or later formal evidence establishes Xuanhuasaurus as an independently available and diagnostic genus, rather than this historical undescribed label.", "uncertainties": [ "Do not silently change the primary paper\u2019s nomen dubium label to nomen nudum.", "Do not claim original Zhao1985 was obtained.", "Do not make a live alias or transfer PBDB fossils in this evidence report.", "Printed p468 describes horizon as probably Late Jurassic and mentions earliest Cretaceous ages for upper Tuchengzi; verified name identity does not independently settle period approval." ], "references": [ { "label": "Zhao, X., Cheng, Z., Xu, X. & Makovicky, P.J. 2006. A New Ceratopsian from the Upper Jurassic Houcheng Formation of Hebei, China. Acta Geologica Sinica 80(4):467\u2013473.", "url": "https://www.researchgate.net/profile/Peter-Makovicky-2/publication/229792307_A_New_Ceratopsian_from_the_Upper_Jurassic_Houcheng_Formation_of_Hebei_China/links/5af9ece40f7e9b3b0bef7011/A-New-Ceratopsian-from-the-Upper-Jurassic-Houcheng-Formation-of-Hebei-China.pdf" }, { "label": "Olshevsky, G. 1991. A revision of the parainfraclass Archosauria Cope 1869, excluding advanced Crocodylia. Mesozoic Meanderings 2.", "url": "https://www.miketaylor.org.uk/tmp/Olshevsky_1991_A_revision_of_the_parainfraclass_Archosauria_Cope_1869_excluding_the_advanced_Crocodylia.pdf" }, { "label": "International Code of Zoological Nomenclature, Article 13. Names published after 1930.", "url": "https://code.iczn.org/chapter-4-criteria-of-availability/article-13-names-published-after-1930/" } ], "proposedSearchAliases": [ { "fromId": "313238", "toId": "153948", "scope": "future historical-name redirect proposal only; verified type bridge; no fossil transfer" } ] }, { "id": "expert-final-268200", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "268200", "name": "Actiosaurus", "attribution": "Sauvage 1883", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=268200", "reason": "Type reassessment calls the species inquirenda and identifies possible choristodere propodials, not a demonstrated dinosaur." } ], "rationale": "Type reassessment calls the species inquirenda and identifies possible choristodere propodials, not a demonstrated dinosaur.", "reconsideration": "A peer-reviewed type reassessment demonstrates dinosaur identity and diagnostic genus material.", "references": [ { "authors": "Valentin Fischer, Henri Cappetta, Peggy Vincent, G\u00e9raldine Garcia, Stijn Goolaerts, Jeremy E. Martin, Daniel Roggero and Xavier Valentin", "year": 2014, "title": "Ichthyosaurs from the French Rhaetian indicate a severe turnover across the Triassic\u2013Jurassic boundary", "url": "https://orbi.uliege.be/bitstream/2268/172355/1/Fischer%26al2014NatWis.pdf", "doi": "10.1007/s00114-014-1242-7", "access": "Original author manuscript downloaded; taxonomic table and Actiosaurus reassessment read.", "accessedDate": "2026-10-10", "locator": "Table 1 and taxonomic scheme; original Naturwissenschaften 101, 1027\u20131040" } ] }, { "id": "expert-final-66343", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "66343", "name": "Alwalkeria", "attribution": "Chatterjee and Creisler 1994", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=66343", "reason": "2025 reassessment assigned the type-associated femur to Lagerpetidae and introduced Alickmeron; 2026 correction makes Alickmeron an objective junior synonym of Alwalkeria. Original assemblage is heterogeneous." } ], "rationale": "2025 reassessment assigned the type-associated femur to Lagerpetidae and introduced Alickmeron; 2026 correction makes Alickmeron an objective junior synonym of Alwalkeria. Original assemblage is heterogeneous.", "reconsideration": "Resolve latest type-based phylogenetic placement and apply dinosaur-scope policy. Never adopt Alickmeron as a second animal.", "references": [ { "authors": "Sulagna Sen and Sanghamitra Ray", "year": 2025, "title": "Taxonomic reassessment of archosaurs with dinosaurian affinities from the lower fauna of the Upper Triassic Maleri Formation of India and their significance", "url": "https://www.tandfonline.com/doi/abs/10.1080/02724634.2025.2546434", "doi": "10.1080/02724634.2025.2546434", "access": "Primary publisher abstract accessed; proposes Alickmeron in Lagerpetidae.", "accessedDate": "2026-10-10", "locator": null }, { "authors": "Skye N. McDavid, Cy Marchant and Iain Reid", "year": 2026, "title": "Alickmeron Sen & Ray, 2025 is an objective junior synonym of Alwalkeria Chatterjee & Creisler, 1994", "url": "https://www.tandfonline.com/doi/full/10.1080/02724634.2025.2604088", "doi": "10.1080/02724634.2025.2604088", "access": "Primary publisher-indexed abstract accessed; establishes objective junior synonymy. Full systematic placement requires companion reviewer verification.", "accessedDate": "2026-10-10", "locator": null } ] }, { "id": "expert-final-56608", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "56608", "name": "Avalonianus", "attribution": "Kuhn 1961", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=56608", "reason": "The name-bearing tooth material is indeterminate archosaurian; historically associated postcranium does not diagnose this genus and relates to Camelotia." } ], "rationale": "The name-bearing tooth material is indeterminate archosaurian; historically associated postcranium does not diagnose this genus and relates to Camelotia.", "reconsideration": "New peer-reviewed diagnostic name-bearing material establishes a defensible dinosaur genus.", "references": [ { "authors": "Owain Evans, Cindy Howells, Nathan Wintle and Michael J. Benton", "year": 2025, "title": "Re-assessment of a large archosaur dentary from the Late Triassic of South Wales, United Kingdom", "url": "https://doi.org/10.1016/j.pgeola.2025.101142", "doi": "10.1016/j.pgeola.2025.101142", "access": "Original publisher-indexed article text accessed; full PDF mirror failed. Supports chimeric Avalonia/Avalonianus with indeterminate archosaur tooth component.", "accessedDate": "2026-10-10", "locator": null } ] }, { "id": "expert-final-57248", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "57248", "name": "Bagaraatan", "attribution": "Osm\u00f3lska 1996", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=57248", "reason": "The 2024 redescription partitions the original skeleton into a juvenile indeterminate tyrannosaurid type and caenagnathid hindlimb elements. Alleged diagnostic type features may be ontogenetic or individual variation; no supported automatic Tarbosaurus/Alioramus alias follows." } ], "rationale": "The 2024 redescription partitions the original skeleton into a juvenile indeterminate tyrannosaurid type and caenagnathid hindlimb elements. Alleged diagnostic type features may be ontogenetic or individual variation; no supported automatic Tarbosaurus/Alioramus alias follows.", "reconsideration": "Reconsider after a specimen-based rediagnosis or nomenclatural decision establishes a defensible independent genus. Preserve the original records; do not transfer the whole historical fossil assemblage.", "references": [ { "id": "slowiak2024", "title": "Reassessment of the enigmatic Late Cretaceous theropod dinosaur Bagaraatan ostromi", "publicationYear": 2024, "publicationDate": "2024-02-16", "doi": "10.1093/zoolinnean/zlad169", "url": "https://www.pure.ed.ac.uk/ws/portalfiles/portal/387760326/Manuscript-Bagaraatan_final.pdf", "access": "full_primary_accepted_manuscript", "sectionsInspected": [ "Holotype partition", "Phylogenetic affinities", "Validity discussion", "Conclusions" ], "accessed": "2026-10-10", "notes": null } ] }, { "id": "expert-final-65646", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "65646", "name": "Changdusaurus", "attribution": "Zhao 1985", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=65646", "reason": "Historical Changtusaurus/Changdusaurus draft-name spellings; no formal genus description found." } ], "rationale": "Historical Changtusaurus/Changdusaurus draft-name spellings; no formal genus description found.", "reconsideration": "Locate a compliant formal description with type species.", "references": [ { "authors": "Zhao Xijin", "year": 1983, "title": "Phylogeny and evolutionary stages of Dinosauria", "url": "https://www.app.pan.pl/archive/published/app28/app28-295.pdf", "doi": null, "access": "Original primary paper full text read.", "accessedDate": "2026-10-10", "locator": "Acta Palaeontologica Polonica 28(1\u20132), 295\u2013306; page 302" }, { "authors": "George Olshevsky", "year": 1991, "title": "A revision of the parainfraclass Archosauria Cope, 1869, excluding the advanced Crocodylia", "url": "https://www.miketaylor.org.uk/tmp/Olshevsky_1991_A_revision_of_the_parainfraclass_Archosauria_Cope_1869_excluding_the_advanced_Crocodylia.pdf", "doi": null, "access": "Original nomenclatural revision PDF downloaded and relevant entries read; not a modern peer-reviewed anatomical reassessment.", "accessedDate": "2026-10-10", "locator": "Printed pages 124, 126, 131, 152, 155, 158 and Yezosaurus entry" }, { "authors": "International Commission on Zoological Nomenclature", "year": 1999, "title": "International Code of Zoological Nomenclature, Article 13", "url": "https://code.iczn.org/chapter-4-criteria-of-availability/article-13-names-published-after-1930/", "doi": null, "access": "Official code read; application to particular names is an audit inference, not a Commission ruling.", "accessedDate": "2026-10-10", "locator": null } ] }, { "id": "expert-final-38639", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "38639", "name": "Coloradia", "attribution": "Bonaparte 1979", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38639", "reason": "Preoccupied by the moth genus; retained Coloradisaurus is the replacement." } ], "rationale": "Preoccupied by the moth genus; retained Coloradisaurus is the replacement.", "reconsideration": "No independent slot; restore only if evidence establishes a different available dinosaur identity.", "references": [ { "authors": "George Olshevsky", "year": 1991, "title": "A revision of the parainfraclass Archosauria Cope, 1869, excluding the advanced Crocodylia", "url": "https://www.miketaylor.org.uk/tmp/Olshevsky_1991_A_revision_of_the_parainfraclass_Archosauria_Cope_1869_excluding_the_advanced_Crocodylia.pdf", "doi": null, "access": "Original nomenclatural revision PDF downloaded and relevant entries read; not a modern peer-reviewed anatomical reassessment.", "accessedDate": "2026-10-10", "locator": "Printed pages 124, 126, 131, 152, 155, 158 and Yezosaurus entry" }, { "authors": "Tyler Greenfield, Garrett Bivens and Andr\u00e9 Fonseca", "year": 2020, "title": "The correct authorship of Coloradisaurus (Dinosauria: Sauropodomorpha): Galton, 1990, not Lambert, 1983", "url": "https://www.biotaxa.org/bzn/article/view/66105", "doi": "10.21805/bzn.v77.a050", "access": "Original publisher abstract and author-uploaded text accessed.", "accessedDate": "2026-10-10", "locator": null }, { "authors": "\u00c1lvaro Mones", "year": 2025, "title": "The correct year of publication of Coloradia brevis Bonaparte (Dinosauria: Sauropodomorpha) is 1979, not 1978", "url": "https://www.biotaxa.org/bzn/article/download/88099/82765", "doi": "10.21805/bzn.v82.a029", "access": "Original primary nomenclatural note PDF read.", "accessedDate": "2026-10-10", "locator": null } ] }, { "id": "expert-final-435996", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "435996", "name": "Eugongbusaurus", "attribution": "Knoll 1999", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=435996", "reason": "The 1999 abstract proposes this new genus without a qualifying generic differential description or reference to one; unavailability is an Article 13.1 inference. Type fixation through monotypy is not the asserted defect." } ], "rationale": "The 1999 abstract proposes this new genus without a qualifying generic differential description or reference to one; unavailability is an Article 13.1 inference. Type fixation through monotypy is not the asserted defect.", "reconsideration": "A compliant formal generic description, or demonstrate availability of the original act.", "references": [ { "authors": "Fabien Knoll", "year": 1999, "title": "The family Fabrosauridae (conference abstract)", "url": "https://www.researchgate.net/publication/259872954_IV_EUROPEAN_WORKSHOP_ON_VERTEBRATE_PALAEONTOLOGY_Programme_and_Abstracts_Field_guide", "doi": null, "access": "Original conference abstract in editor-uploaded proceedings read. Original RERO mirror now returns 410.", "accessedDate": "2026-10-10", "locator": "IV European Workshop on Vertebrate Palaeontology, Albarrac\u00edn, Spain, Programme and Abstracts, page 65" }, { "authors": "International Commission on Zoological Nomenclature", "year": 1999, "title": "International Code of Zoological Nomenclature, Article 13", "url": "https://code.iczn.org/chapter-4-criteria-of-availability/article-13-names-published-after-1930/", "doi": null, "access": "Official code read; application to particular names is an audit inference, not a Commission ruling.", "accessedDate": "2026-10-10", "locator": null } ] }, { "id": "expert-final-65168", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "65168", "name": "Fenestrosaurus", "attribution": "Osborn 1924", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=65168", "reason": "Informal preliminary name of Oviraptor, not an additional animal." } ], "rationale": "Informal preliminary name of Oviraptor, not an additional animal.", "reconsideration": "A separate available genus with independently diagnostic material.", "references": [ { "authors": "George Olshevsky", "year": 1991, "title": "A revision of the parainfraclass Archosauria Cope, 1869, excluding the advanced Crocodylia", "url": "https://www.miketaylor.org.uk/tmp/Olshevsky_1991_A_revision_of_the_parainfraclass_Archosauria_Cope_1869_excluding_the_advanced_Crocodylia.pdf", "doi": null, "access": "Original nomenclatural revision PDF downloaded and relevant entries read; not a modern peer-reviewed anatomical reassessment.", "accessedDate": "2026-10-10", "locator": "Printed pages 124, 126, 131, 152, 155, 158 and Yezosaurus entry" } ] }, { "id": "expert-final-450385", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "450385", "name": "Himeoolithus", "attribution": "Tanaka et al. 2020", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=450385", "reason": "Explicitly an egg oogenus, not an independently identified body genus." } ], "rationale": "Explicitly an egg oogenus, not an independently identified body genus.", "reconsideration": "Change game scope to include egg taxa; a body-genus association alone would not create an independent animal.", "references": [ { "authors": "Kohei Tanaka and coauthors", "year": 2020, "title": "Exceptionally small theropod eggs from the Lower Cretaceous Ohyamashimo Formation of Tamba, Hyogo Prefecture, Japan", "url": "https://www.sciencedirect.com/science/article/pii/S0195667120302056", "doi": "10.1016/j.cretres.2020.104519", "access": "Original publisher abstract accessed; explicitly introduces oogenus and oospecies.", "accessedDate": "2026-10-10", "locator": null } ] }, { "id": "expert-final-38560", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "38560", "name": "Ingenia", "attribution": "Barsbold 1981", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38560", "reason": "Ingenia Barsbold 1981 is preoccupied by the nematode genus Ingenia Gerlach 1957; replacement Ajancingenia later becomes a subjective synonym of Heyuannia in the adopted revision." } ], "rationale": "Ingenia Barsbold 1981 is preoccupied by the nematode genus Ingenia Gerlach 1957; replacement Ajancingenia later becomes a subjective synonym of Heyuannia in the adopted revision.", "reconsideration": "Reconsider after a specimen-based rediagnosis or nomenclatural decision establishes a defensible independent genus. Preserve the original records; do not transfer the whole historical fossil assemblage.", "references": [ { "id": "easter2013", "title": "A new name for the oviraptorid dinosaur Ingenia yanshini (Barsbold, 1981; preoccupied by Gerlach, 1957)", "publicationYear": 2013, "publicationDate": "2013-11-19", "doi": "10.11646/zootaxa.3737.2.6", "url": "https://mapress.com/zt/article/view/zootaxa.3737.2.6", "access": "primary_abstract_and_first_page", "sectionsInspected": [], "accessed": "2026-10-10", "notes": null }, { "id": "funston2018", "title": "Oviraptorosaur anatomy, diversity and ecology in the Nemegt Basin", "publicationYear": 2018, "publicationDate": null, "doi": "10.1016/j.palaeo.2017.10.023", "url": "https://www.researchgate.net/publication/320986075_Oviraptorosaur_anatomy_diversity_and_ecology_in_the_Nemegt_Basin", "access": "full_primary_accepted_manuscript", "sectionsInspected": [ "Heyuannia systematic section", "Referrals", "Taxonomic discussion" ], "accessed": "2026-10-10", "notes": null } ] }, { "id": "expert-final-91407", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "91407", "name": "Koutalisaurus", "attribution": "Prieto-M\u00e1rquez et al. 2006", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=91407", "reason": "The supposed distinctive symphyseal projection on IPS 29920 was partly preparation infill. The 2013 revision identifies the cleaned dentary as indeterminate Lambeosaurinae and explicitly cannot refer it to Pararhabdodon. The 2021 Ajnabia matrix does not rebut this diagnostic failure." } ], "rationale": "The supposed distinctive symphyseal projection on IPS 29920 was partly preparation infill. The 2013 revision identifies the cleaned dentary as indeterminate Lambeosaurinae and explicitly cannot refer it to Pararhabdodon. The 2021 Ajnabia matrix does not rebut this diagnostic failure.", "reconsideration": "Reconsider after a specimen-based rediagnosis or nomenclatural decision establishes a defensible independent genus. Preserve the original records; do not transfer the whole historical fossil assemblage.", "references": [ { "id": "prietomarquez2013", "title": "Diversity, Relationships, and Biogeography of the Lambeosaurine Dinosaurs from the European Archipelago, with Description of the New Aralosaurin Canardia garonnensis", "publicationYear": 2013, "publicationDate": "2013-07-26", "doi": "10.1371/journal.pone.0069835", "url": "https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0069835", "access": "full_primary_html", "sectionsInspected": [ "Koutalisaurus / Les Llaus dentary comparison", "Systematics", "Taxonomic discussion" ], "accessed": "2026-10-10", "notes": null }, { "id": "longrich2021", "title": "The first duckbill dinosaur (Hadrosauridae: Lambeosaurinae) from Africa and the role of oceanic dispersal in dinosaur biogeography", "publicationYear": 2021, "publicationDate": null, "doi": "10.1016/j.cretres.2020.104678", "url": "https://purehost.bath.ac.uk/ws/portalfiles/portal/225829898/Longrich_et_al._2021_African_hadrosaur_Ajnabia_odysseus.pdf", "access": "full_primary_accepted_manuscript", "sectionsInspected": [ "Taxon sampling", "Phylogeny", "Biogeography" ], "accessed": "2026-10-10", "notes": "Koutalisaurus as an analytical OTU does not address the removed diagnostic preparation infill or explicitly revalidate it." } ] }, { "id": "expert-final-66640", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "66640", "name": "Ngexisaurus", "attribution": "Zhao 1983", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=66640", "reason": "Zhao lists this name but provides no qualifying individual diagnosis or type fixation; no subsequent formal description located." } ], "rationale": "Zhao lists this name but provides no qualifying individual diagnosis or type fixation; no subsequent formal description located.", "reconsideration": "Locate a compliant formal description and type designation.", "references": [ { "authors": "Zhao Xijin", "year": 1983, "title": "Phylogeny and evolutionary stages of Dinosauria", "url": "https://www.app.pan.pl/archive/published/app28/app28-295.pdf", "doi": null, "access": "Original primary paper full text read.", "accessedDate": "2026-10-10", "locator": "Acta Palaeontologica Polonica 28(1\u20132), 295\u2013306; page 302" }, { "authors": "International Commission on Zoological Nomenclature", "year": 1999, "title": "International Code of Zoological Nomenclature, Article 13", "url": "https://code.iczn.org/chapter-4-criteria-of-availability/article-13-names-published-after-1930/", "doi": null, "access": "Official code read; application to particular names is an audit inference, not a Commission ruling.", "accessedDate": "2026-10-10", "locator": null } ] }, { "id": "expert-final-66988", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "66988", "name": "Ornithomimidorum", "attribution": "Huene 1926", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=66988", "reason": "Provisional Latin grouping phrase, not an independently erected genus; B later became Betasuchus. Do not alias the entire A/B grouping to one genus." } ], "rationale": "Provisional Latin grouping phrase, not an independently erected genus; B later became Betasuchus. Do not alias the entire A/B grouping to one genus.", "reconsideration": "Demonstrate an available independent genus name and type species.", "references": [ { "authors": "Eric Buffetaut", "year": 2025, "title": "Abelisaurids before Abelisaurus: early reports of abelisaurid theropods from Europe", "url": "https://fundacionazara.org.ar/img/revista-historia-natural/tercera-serie-volumen-15-1-2025/HN_15_1_181-194.pdf", "doi": null, "access": "Original peer-reviewed review PDF read.", "accessedDate": "2026-10-10", "locator": "Historia Natural 15(1), 181\u2013194, especially page 187" } ] }, { "id": "expert-final-65172", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "65172", "name": "Ovoraptor", "attribution": "Osborn 1924", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=65172", "reason": "Informal preliminary name of Velociraptor." } ], "rationale": "Informal preliminary name of Velociraptor.", "reconsideration": "A separate available genus with independently diagnostic material.", "references": [ { "authors": "George Olshevsky", "year": 1991, "title": "A revision of the parainfraclass Archosauria Cope, 1869, excluding the advanced Crocodylia", "url": "https://www.miketaylor.org.uk/tmp/Olshevsky_1991_A_revision_of_the_parainfraclass_Archosauria_Cope_1869_excluding_the_advanced_Crocodylia.pdf", "doi": null, "access": "Original nomenclatural revision PDF downloaded and relevant entries read; not a modern peer-reviewed anatomical reassessment.", "accessedDate": "2026-10-10", "locator": "Printed pages 124, 126, 131, 152, 155, 158 and Yezosaurus entry" } ] }, { "id": "expert-final-105576", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "105576", "name": "Priodontosaurus", "attribution": "Romer 1966", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=105576", "reason": "Catalogued incorrect spelling of Priodontognathus. Canonical genus is absent from current selected set; do not create an alias to a nonexistent game target." } ], "rationale": "Catalogued incorrect spelling of Priodontognathus. Canonical genus is absent from current selected set; do not create an alias to a nonexistent game target.", "reconsideration": "Correct source spelling/identity and explicitly approve canonical genus separately.", "references": [ { "authors": "George Olshevsky", "year": 1991, "title": "A revision of the parainfraclass Archosauria Cope, 1869, excluding the advanced Crocodylia", "url": "https://www.miketaylor.org.uk/tmp/Olshevsky_1991_A_revision_of_the_parainfraclass_Archosauria_Cope_1869_excluding_the_advanced_Crocodylia.pdf", "doi": null, "access": "Original nomenclatural revision PDF downloaded and relevant entries read; not a modern peer-reviewed anatomical reassessment.", "accessedDate": "2026-10-10", "locator": "Printed pages 124, 126, 131, 152, 155, 158 and Yezosaurus entry" } ] }, { "id": "expert-final-66638", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "66638", "name": "Sangonghesaurus", "attribution": "Zhao 1983", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=66638", "reason": "Listed without a type species or qualifying original description. Do not infer synonymy with Tianchisaurus." } ], "rationale": "Listed without a type species or qualifying original description. Do not infer synonymy with Tianchisaurus.", "reconsideration": "Published compliant diagnosis, type species and independently identifiable material.", "references": [ { "authors": "Zhao Xijin", "year": 1983, "title": "Phylogeny and evolutionary stages of Dinosauria", "url": "https://www.app.pan.pl/archive/published/app28/app28-295.pdf", "doi": null, "access": "Original primary paper full text read.", "accessedDate": "2026-10-10", "locator": "Acta Palaeontologica Polonica 28(1\u20132), 295\u2013306; page 302" }, { "authors": "George Olshevsky", "year": 1991, "title": "A revision of the parainfraclass Archosauria Cope, 1869, excluding the advanced Crocodylia", "url": "https://www.miketaylor.org.uk/tmp/Olshevsky_1991_A_revision_of_the_parainfraclass_Archosauria_Cope_1869_excluding_the_advanced_Crocodylia.pdf", "doi": null, "access": "Original nomenclatural revision PDF downloaded and relevant entries read; not a modern peer-reviewed anatomical reassessment.", "accessedDate": "2026-10-10", "locator": "Printed pages 124, 126, 131, 152, 155, 158 and Yezosaurus entry" }, { "authors": "International Commission on Zoological Nomenclature", "year": 1999, "title": "International Code of Zoological Nomenclature, Article 13", "url": "https://code.iczn.org/chapter-4-criteria-of-availability/article-13-names-published-after-1930/", "doi": null, "access": "Official code read; application to particular names is an audit inference, not a Commission ruling.", "accessedDate": "2026-10-10", "locator": null } ] }, { "id": "expert-final-168391", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "168391", "name": "Sauraechmodon", "attribution": null, "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=168391", "reason": "Unused historical name for Echinodon, not an independently diagnosed animal. Exact nomenclatural availability need not be asserted for this duplicate-slot exclusion." } ], "rationale": "Unused historical name for Echinodon, not an independently diagnosed animal. Exact nomenclatural availability need not be asserted for this duplicate-slot exclusion.", "reconsideration": "Evidence for a separate available genus identity.", "references": [ { "authors": "George Olshevsky", "year": 1991, "title": "A revision of the parainfraclass Archosauria Cope, 1869, excluding the advanced Crocodylia", "url": "https://www.miketaylor.org.uk/tmp/Olshevsky_1991_A_revision_of_the_parainfraclass_Archosauria_Cope_1869_excluding_the_advanced_Crocodylia.pdf", "doi": null, "access": "Original nomenclatural revision PDF downloaded and relevant entries read; not a modern peer-reviewed anatomical reassessment.", "accessedDate": "2026-10-10", "locator": "Printed pages 124, 126, 131, 152, 155, 158 and Yezosaurus entry" } ] }, { "id": "expert-final-65370", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "65370", "name": "Saurophaganax", "attribution": "Chure 1995", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=65370", "reason": "The 2024 revision finds holotype OMNH 1123 unidentifiable as a diagnostic theropod and probably sauropod in morphology. Saurophaganax is not simply renamed Allosaurus anax; only particular formerly referred specimens support the new species." } ], "rationale": "The 2024 revision finds holotype OMNH 1123 unidentifiable as a diagnostic theropod and probably sauropod in morphology. Saurophaganax is not simply renamed Allosaurus anax; only particular formerly referred specimens support the new species.", "reconsideration": "Reconsider after a specimen-based rediagnosis or nomenclatural decision establishes a defensible independent genus. Preserve the original records; do not transfer the whole historical fossil assemblage.", "references": [ { "id": "danison2024", "title": "Chimerism of specimens referred to Saurophaganax maximus reveals a new species of Allosaurus (Dinosauria, Theropoda)", "publicationYear": 2024, "publicationDate": "2024-12-21", "doi": "10.18435/vamp29404", "url": "https://dinodata.de/bibliothek/pdf_c/2024/Danison%2Bet%2Bal%2BSaurophaganax_dd.pdf", "access": "full_primary_pdf_mirror", "sectionsInspected": [ "Systematics", "OMNH 1123 discussion", "Allosaurus anax diagnosis", "Table 3 referrals", "Conclusions" ], "accessed": "2026-10-10", "notes": "Important version discrepancy: the DOI landing-page abstract says dual validity / valid diplodocid, but the final published PDF abstract and text explicitly state nomen dubium. Findings here follow the final 2024-12-21 PDF, not the stale landing-page abstract." } ] }, { "id": "expert-final-67050", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "67050", "name": "Sauropus", "attribution": "Hitchcock 1845", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=67050", "reason": "Footprint ichnogenus; revised type is indeterminate worn track material." } ], "rationale": "Footprint ichnogenus; revised type is indeterminate worn track material.", "reconsideration": "Change game scope to include ichnotaxa.", "references": [ { "authors": "Paul E. Olsen and Donald Baird", "year": 1986, "title": "The ichnogenus Atreipus and its significance for Triassic biostratigraphy", "url": "https://www.ldeo.columbia.edu/~polsen/nbcp/olsen_baird_86.pdf", "doi": null, "access": "Original revision PDF downloaded and Appendix 1 read.", "accessedDate": "2026-10-10", "locator": "In The Beginning of the Age of Dinosaurs, pages 61\u201387; Appendix 1 pages 78\u201379" } ] }, { "id": "expert-final-38525", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "38525", "name": "Syntarsus", "attribution": "Raath 1969", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38525", "reason": "The dinosaur generic name is preoccupied by Syntarsus Fairmaire 1869. Unqualified Syntarsus is also ambiguous between rhodesiensis and kayentakatae. Do not redirect every Syntarsus guess to Megapnosaurus." } ], "rationale": "The dinosaur generic name is preoccupied by Syntarsus Fairmaire 1869. Unqualified Syntarsus is also ambiguous between rhodesiensis and kayentakatae. Do not redirect every Syntarsus guess to Megapnosaurus.", "reconsideration": "Reconsider after a specimen-based rediagnosis or nomenclatural decision establishes a defensible independent genus. Preserve the original records; do not transfer the whole historical fossil assemblage.", "references": [ { "id": "mcdavidbugos2022", "title": "Taxonomic notes on Megapnosaurus and 'Syntarsus' (Theropoda: Coelophysidae)", "publicationYear": 2022, "publicationDate": null, "doi": "10.5281/zenodo.7027378", "url": "https://static1.squarespace.com/static/57ccc4a9bebafb56980a7fdc/t/633876ac379ee34c200e051b/1664644780625/McDavidBugos2022Megapnosaurus.pdf", "access": "full_primary_pdf", "sectionsInspected": [ "Taxonomic discussion", "Conclusions" ], "accessed": "2026-10-10", "notes": "The Mosasaur 12 taxonomic contribution; do not describe the Zenodo DOI as a different journal article." } ] }, { "id": "expert-final-169801", "decision": "exclude independent guess identity", "stage": "approved Expert reference inclusion exception; live sample unchanged", "genera": [], "heldRecords": [ { "id": "169801", "name": "Yezosaurus", "attribution": "Muramoto and Obata 1977", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=169801", "reason": "Informal name for mosasaur MCM.M0009, described in 2008 as Taniwhasaurus mikasaensis and subsequently treated as Taniwhasaurus sp.; no independent dinosaur identity." } ], "rationale": "Informal name for mosasaur MCM.M0009, described in 2008 as Taniwhasaurus mikasaensis and subsequently treated as Taniwhasaurus sp.; no independent dinosaur identity.", "reconsideration": "Independently diagnostic dinosaur material and a validly established name.", "references": [ { "authors": "George Olshevsky", "year": 1991, "title": "A revision of the parainfraclass Archosauria Cope, 1869, excluding the advanced Crocodylia", "url": "https://www.miketaylor.org.uk/tmp/Olshevsky_1991_A_revision_of_the_parainfraclass_Archosauria_Cope_1869_excluding_the_advanced_Crocodylia.pdf", "doi": null, "access": "Original nomenclatural revision PDF downloaded and relevant entries read; not a modern peer-reviewed anatomical reassessment.", "accessedDate": "2026-10-10", "locator": "Printed pages 124, 126, 131, 152, 155, 158 and Yezosaurus entry" }, { "authors": "Michael W. Caldwell, Takuya Konishi, Ikuwo Obata and Kikuwo Muramoto", "year": 2008, "title": "A new species of Taniwhasaurus (Mosasauridae, Tylosaurinae) from the Upper Santonian\u2013Lower Campanian (Upper Cretaceous) of Hokkaido, Japan", "url": "https://www.researchgate.net/publication/236876883_A_New_Species_Of_Taniwhasaurus_Mosasauridae_Tylosaurinae_From_The_Upper_Santonian-Lower_Campanian_Upper_Cretaceous_Of_Hokkaido_Japan", "doi": "10.1671/0272-4634(2008)28[339:ANSOTM]2.0.CO;2", "access": "Original authors\u2019 publication metadata and abstract accessed; full anatomical paper not read.", "accessedDate": "2026-10-10", "locator": null }, { "authors": "Kumiko Matsui and Tomoki Karasawa", "year": 2020, "title": "3D model related to the publication: Interacting with the inaccessible: utilization of multimedia-based visual contents of Japan\u2019s National Monument, the Taniwhasaurus mikasaensis (Mosasauridae) holotype for educational workshops at Mikasa City Museum", "url": "https://www.researchgate.net/publication/345340544_3D_model_related_to_the_publicationInteracting_with_the_inaccessible_utilization_of_multimedia-based_visual_contents_of_Japan%27s_National_Monument_the_Taniwhasaurus_mikasaensis_Mosasauridae_holotype_fo", "doi": "10.18563/journal.m3.106", "access": "Original author-uploaded full text read, including explicit Yezosaurus unavailability, specimen identity and 2019 species-level reassessment.", "accessedDate": "2026-10-10", "locator": null } ] }, { "id": "approved-path-audit-38518", "decision": "exclude independent guess identity", "stage": "User approved 11 October 2026; sample unchanged", "genera": [], "heldRecords": [ { "id": "38518", "name": "Saltopus", "attribution": "Huene 1910", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38518", "reason": "The dedicated revision places Saltopus outside Dinosauria." } ], "rationale": "The dedicated revision places Saltopus outside Dinosauria.", "reconsideration": "Reconsider when diagnostic name-bearing material or a peer-reviewed revision supports a secure independent dinosaur genus within the published scope.", "references": [ { "title": "Saltopus, a dinosauriform from the Upper Triassic of Scotland", "url": "https://doi.org/10.1017/S1755691011020081" } ] }, { "id": "approved-path-audit-192928", "decision": "exclude independent guess identity", "stage": "User approved 11 October 2026; sample unchanged", "genera": [], "heldRecords": [ { "id": "192928", "name": "Protoavis", "attribution": "Chatterjee 1991", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=192928", "reason": "Probably composite name-bearing material does not establish one diagnosable dinosaur genus." } ], "rationale": "Probably composite name-bearing material does not establish one diagnosable dinosaur genus.", "reconsideration": "Reconsider when diagnostic name-bearing material or a peer-reviewed revision supports a secure independent dinosaur genus within the published scope.", "references": [ { "title": "A critical re-evaluation of the Late Triassic dinosaur taxa of North America", "url": "https://doi.org/10.1017/S1477201906002040" } ] }, { "id": "approved-path-audit-38792", "decision": "exclude independent guess identity", "stage": "User approved 11 October 2026; sample unchanged", "genera": [], "heldRecords": [ { "id": "38792", "name": "Yaverlandia", "attribution": "Galton 1971", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38792", "reason": "The 2026 dedicated revision leaves dinosaur identity unresolved; no supported maniraptoran, pachycephalosaur or other narrow branch." } ], "rationale": "The 2026 dedicated revision leaves dinosaur identity unresolved; no supported maniraptoran, pachycephalosaur or other narrow branch.", "reconsideration": "Reconsider when diagnostic name-bearing material or a peer-reviewed revision supports a secure independent dinosaur genus within the published scope.", "references": [ { "title": "A second specimen of the enigmatic Wealden reptile Yaverlandia", "url": "https://doi.org/10.1016/j.pgeola.2026.101179" } ] }, { "id": "approved-path-audit-105061", "decision": "exclude independent guess identity", "stage": "User approved 11 October 2026; sample unchanged", "genera": [], "heldRecords": [ { "id": "105061", "name": "Krzyzanowskisaurus", "attribution": "Heckert 2005", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=105061", "reason": "Tooth-based identity may belong to Revueltosaurus or another non-dinosaurian archosaur; an ornithischian branch is unsupported." } ], "rationale": "Tooth-based identity may belong to Revueltosaurus or another non-dinosaurian archosaur; an ornithischian branch is unsupported.", "reconsideration": "Reconsider when diagnostic name-bearing material or a peer-reviewed revision supports a secure independent dinosaur genus within the published scope.", "references": [ { "title": "The first occurrence of the enigmatic archosaur Krzyzanowskisaurus hunti in Arizona", "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC4411520/" }, { "title": "Fonseca et al. 2024: Supplementary Data 1, excluded and fragmentary taxa", "url": "https://doi.org/10.6084/m9.figshare.26076646" } ] }, { "id": "approved-path-audit-64059", "decision": "exclude independent guess identity", "stage": "User approved 11 October 2026; sample unchanged", "genera": [], "heldRecords": [ { "id": "64059", "name": "Ferganocephale", "attribution": "Averianov et al. 2005", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=64059", "reason": "Dubious tooth-based name; only a broad Saphornithischia interpretation is defensible, without a diagnosable independent hidden answer." } ], "rationale": "Dubious tooth-based name; only a broad Saphornithischia interpretation is defensible, without a diagnosable independent hidden answer.", "reconsideration": "Reconsider when diagnostic name-bearing material or a peer-reviewed revision supports a secure independent dinosaur genus within the published scope.", "references": [ { "title": "Fonseca et al. 2024: Supplementary Data 1, excluded and fragmentary taxa", "url": "https://doi.org/10.6084/m9.figshare.26076646" } ] }, { "id": "approved-path-audit-38719", "decision": "exclude independent guess identity", "stage": "User approved 11 October 2026; sample unchanged", "genera": [], "heldRecords": [ { "id": "38719", "name": "Gongbusaurus", "attribution": "Dong et al. 1983", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38719", "reason": "The dubious tooth-based type shiyii does not inherit the more informative ancestry of referred wucaiwanensis material." } ], "rationale": "The dubious tooth-based type shiyii does not inherit the more informative ancestry of referred wucaiwanensis material.", "reconsideration": "Reconsider when diagnostic name-bearing material or a peer-reviewed revision supports a secure independent dinosaur genus within the published scope.", "references": [ { "title": "Fonseca et al. 2024: Supplementary Data 1, excluded and fragmentary taxa", "url": "https://doi.org/10.6084/m9.figshare.26076646" } ] }, { "id": "approved-path-audit-38738", "decision": "exclude independent guess identity", "stage": "User approved 11 October 2026; sample unchanged", "genera": [], "heldRecords": [ { "id": "38738", "name": "Nanosaurus", "attribution": "Marsh 1877", "pbdb": "https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38738", "reason": "The dedicated 2025 revision finds the name-bearing material indeterminate; historical referred skeletons cannot establish an independent answer." } ], "rationale": "The dedicated 2025 revision finds the name-bearing material indeterminate; historical referred skeletons cannot establish an independent answer.", "reconsideration": "Reconsider when diagnostic name-bearing material or a peer-reviewed revision supports a secure independent dinosaur genus within the published scope.", "references": [ { "title": "A Review of Nanosaurus agilis Marsh and Other Small-Bodied Morrison Formation Ornithopods", "url": "https://doi.org/10.3374/014.066.0102" } ] } ], "sourceAuthority": { "approvedDate": "2026-10-10", "includedGenera": "PBDB accepted genus identities within the published non-avian scope supply the Expert guess-roster baseline. Apply and prominently publish explicit identity, naming-availability and exceptionally dubious-material exceptions; preserve the dated snapshot and taxon links so players can verify the selected list.", "otherInformation": "PBDB is not the final authority for relationships, diet, age, geographic range or locality metadata. Use the latest valid, relevant literature as needed, weighing evidential support rather than publication date alone.", "amendments": "Cite and explain material departures in Curator\u2019s Notes; preserve original records and source dates. Resolve fossil referrals and horizon corrections at specimen/site level, retaining unresolved scientific uncertainty.", "eligibility": "A roster member is a viable guess, but becomes a hidden answer only after its working lineage, clues and reachable candidate crowds pass review. Explorer is a published subset of the curated Expert roster." } }