Teiid-like Scincomorphan Lizards from The Late Cretaceous (Campanian) of Southern Utah
Bibliographic record
Abstract
Teiid-like scincomorphan lizards from the Late Cretaceous (Campanian) of the Kaiparowits Formation of southern Utah include Chamops cf. Chamops segnis, cf. Leptochamops, a new species of Meniscognathus, and a new taxon with well-developed tricuspid teeth. These taxa comprise some of the only confirmed reports of these types of lizards from Late Cretaceous rocks south of Wyoming, allowing for a more comprehensive investigation of the distributional and evolutionary patterns of teiid-like scincomorphans from the Campanian. The majority of the known taxa are from the Western Interior west of the margin of the midcontinental sea that bisected North America during the Late Cretaceous. The teiid-like scincomorphans from the Campanian comprised two distinct faunas; one in the north (e.g., Montana, Western Canada) and one in the south (e.g., Utah, New Mexico). These two faunas share Chamops and potentially Leptochamops, but each region also has two to four endemic taxa representing a diversity that correlates to latitudinal differences. Teiid-like scincomorphans present in North America prior to the establishment of the midcontinental seaway are not nearly as diverse as during the Campanian, indicating that the radiation of forms followed the establishment of the seaway, although it may not have played a direct role.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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 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".