A new tomistomine (Crocodylia) from the Miocene of Taiwan
Bibliographic record
Abstract
Penghusuchus pani gen. et sp. nov. is described on the basis of a skeleton from the upper Miocene of Penghu Island. It is the most complete vertebrate fossil from Taiwan. Penghusuchus pani is distinguished from other tomistomines mainly in features of the skull and mandible. The most diagnostic characters for the taxon are that the prefrontal and anterior process of the jugal extend as anteriorly as the lacrimal does; the seventh maxillary tooth is the largest; the choana is sharply triangular in outline; and the floor of the nasopharyngeal canal and choanal borders strongly drop downward to form a Y-shaped prominence on the ventral surface of the pterygoids. Our phylogenetic analysis indicates that the new form is closely related to two other Asian fossil tomistomines, Tomistoma petrolica from southeastern China and Toyotamaphimeia machikanensis from Japan. The discovery of P. pani certainly enriches our knowledge of the paleogeography and the phylogenetic relationships amongst tomistomines.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.000 |
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".