The northernmost occurrence of <i>Prognathodon</i> (Squamata: Mosasauridae) from the Western Interior Seaway of North America
Bibliographic record
Abstract
The marine reptile Prognathodon (Squamata: Mosasauridae), a mosasaurine mosasaur exhibiting a characteristically robust skull and dentition, lived during the last two ages of the Late Cretaceous. Fossilized remains of animals assigned to this genus are so far known from North America, Europe, Africa, and New Zealand, indicating their wide geographic ranges and presumed ecological and evolutionary success. Assignable to Prognathodon, a newly discovered partial marginal tooth from Dorothy, Alberta, Canada (51°15′48″N), extends the geographic range of the genus by 190 km northward in the Northern Hemisphere. Coupled with the New Zealand record of this mosasaur, the new discovery indicates that Prognathodon likely ranged anywhere from 60°N to 60°S paleolatitude, and these reptiles may even have been occasional inhabitants of the polar regions.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".