Additions to the latest Paleocene Buckman Hollow local fauna, Chappo Member of the Wasatch Formation, Lincoln County, southwestern Wyoming
Bibliographic record
Abstract
With few notable exceptions, mammalian faunas from the latest Paleocene of North America (Clarkforkian North American Land Mammal Age, approximately 57 to 55.7 Ma) are poorly known, with the vast majority recovered from a single area, the Bighorn Basin of northwestern Wyoming.Comparably aged faunas elsewhere are few.Here we describe new material, including several previously undocumented species, from the Buckman Hollow local fauna from the Green River Basin of southwestern Wyoming.Newly documented occurrences include the multituberculate Neoliotomus conventus, the oxyaenid creodont Dipsalidictis, and a rare phenacodontid condylarth Ectocion cf.E. major.Although sparse, these additions offer the opportunity to reevaluate biostratigraphic and biogeographic patterns observed among latest Paleocene faunas, which include differing mammalian co-occurrence patterns in these more southerly faunas than seen in the Bighorn Basin.
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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 | 0.002 | 0.001 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.001 |
| 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 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".