<i>Cornualbus primus</i> gen. et sp. nov.: a new procolophonid (Reptilia: Parareptilia) from Upper Triassic of South America, first tetrapod from the Passo das Tropas Member of the Santa Maria Supersequence
Bibliographic record
Abstract
Procolophonidae is the most successful Parareptilia group throughout Pangaea. For almost two decades, the study of the most derived South American procolophonids only included the description of new specimens belonging to well-known species, mostly Procolophon trigoniceps. On the basis of a recently collected skull and associated postcranial elements from the early Carnian (Upper Triassic) of Brazil, we describe a new procolophonid, Cornualbus primus gen. et sp. nov. A phylogenetic analysis recovers this new procolophonid within the subfamily Leptopleuroninae, forming a clade with the leptopleuronines Hypsognathus fenneri, Leptopleuron lacertinum, Mandaphon nadra, Hwiccewyrm trispiculum, and Soturnia caliodon. Cornualbus primus bridges a temporal gap in South American procolophonids, which extended from the Induan to the Norian, in addition to being the oldest Leptopleuroninae described for South America. Furthermore, the description of this taxon enriches our knowledge of procolophonid diversity for the South American Triassic period. https://zoobank.org/urn:lsid:zoobank.org:pub:C95A0DCF-CD53-48DF-B323-490E0569286B
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 0.003 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".