A new Cretaceous osteoglossomorph fish from Gansu Province, China
Bibliographic record
Abstract
ABSTRACT Several specimens of a fossil fish recently collected from Cretaceous deposits near Changma, Gansu Province, China, are here described as a new genus and species of osteoglossomorph, Shuleichthys brachypteryx. This fish is a stem osteoglossomorph that cannot be included in either the Hiodontiformes or Osteoglossiformes without making either order polyphyletic. The fossils from the Changma locality are exceptionally well preserved, and allow many details of the anatomy of the new fish to be described, including the presence of a postpelvic bone, which was previously only known to be present in the living Hiodon. The relationships of the osteoglossomorph fishes are still not well resolved, and the addition of the new species to previous phylogenetic analyses causes even less resolution to be found. However, the new species appears to be more derived than Lycoptera and Paralycoptera, two other well-known stem osteoglossomorphs.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.013 | 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 teacher head, 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".