Field guide · The curator’s desk · 10 October 2026
Historical v11 checkpoint. Open the latest curated Expert reference →
The roster desk
One record for every selected genus. See what we can already source, which decisions are recorded, and exactly what still needs work before it becomes an Expert answer.
Selected guesses, evidence leads and approved answers are different statuses. All 1302 selected genera still need an explicit Expert release decision. The existing 36-genus prototype remains playable. Its live status does not certify its facts for the expanded roster.
The 482 retained supported locality comparisons pass the five-candidate limit after informative navigation. These are screening results using provisional facts and the source tree; repeat them with the approved Expert dataset. 2 specific answer holds are recorded. Counts of missing inputs, mapping questions and scientific follow-ups overlap.
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How to read the statuses
- Missing input: no value in the captured source, existing literature candidates or prototype. A value being available still needs scientific review.
- Literature lead: a referenced statement or positive footprint has been reviewed. It does not establish an exhaustive range or independent answer identity.
- Inherited source: PBDB supplies diet through a broader taxon. That is provenance, rather than an approved genus-level clue.
- Answer hold: an existing decision identifies a specific unresolved obstacle. The genus remains selected as a guess.
- Review queue: basic inputs are present; working-tree, fact, footprint and release approval remain.
- Passing locality screen: the current supported proposal leaves at most five after useful navigation. Unscreened genera have not automatically failed.
Earlier flags remain visible as historical context beside later decisions. They are not added to the current task count. Raw values, later literature and current prototype clues are kept separate.
The 19 held source identities
These records are outside the selected roster under documented identity, naming-availability or dubious-material decisions. They are separate from the 2 answer holds above. No fossils are transferred between identities.
Saurornithoides · 69227
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.
Ancistrodon · 154360
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’s Ankistrodon indicus as an Early Triassic proterosuchid archosauriform. The record appears to combine distinct historical names; the exact database repair is unresolved.
Shuuvuia · 307772
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.
Hylosaurus · 66560
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’s later Hylosaurus mantelli, treated as a nomen nudum by Raven. Preserve both records without transferring fossil evidence or ancestry.
Hoplosaurus · 53046
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.
Eosauropoda · 370667
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.
Nemegtia · 68043
Use Nemegtomaia (95490) as the single dinosaur genus identity. Lü et al. 2005 formally replaced Nemegtia Lü 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.
Eucentrosaurus · 94334
Replacement name for the same nominal type species already represented by Centrosaurus; no independent answer animal.
Proiguanodon · 383092
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.
Proyandusaurus · 435994
Both publications expressly identify the same nominal Yandusaurus multidens species; this is not evidence for a second fossil animal.
Nectosaurus · 382945
This is the1910 dinosaur usage for Brown’s navajovius skull, not marine Nectosaurus Merriam1905. PBDB itself records the usage as a recombination of the accepted Kritosaurus navajovius species.
Galveosaurus · 67715
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.
Microsaurops · 83019
Published revision1991 treats it as a spelling/replacement artifact under Microcoelus, not an independently described animal.
Dachongosaurus · 313245
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.
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.
Oshanosaurus · 313242
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.
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.
Damalasaurus · 313240
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.
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.
Microdontosaurus · 65648
Explicit nomen nudum. Zhao1983 p304 provides only a brief evolutionary example. Geographic and Chaya locality data do not establish nomenclatural availability.
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.
Ponerosteus · 92286
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.
Reconsideration: Published modern redescription establishes dinosaur affinity and diagnostic identity from the type or securely associated material.
Xuanhuasaurus · 313238
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.
Reconsideration: Original or later formal evidence establishes Xuanhuasaurus as an independently available and diagnostic genus, rather than this historical undescribed label.