A new erinaceid (Mammalia, Insectivora) from the Late Paleocene of western Canada
Bibliographic record
Abstract
A new genus and species of erinaceid lipotyphlan (Mammalia, Insectivora) from the late Paleocene of western Canada is described. Oncocherus krishtalkai gen. et sp. nov. is known from three late Tiffanian localities in central Alberta and southeastern Saskatchewan and is but one of several erinaceomorph and soricomorph taxa known from the Late Paleocene of western Canada. Oncocherus possesses apomorphies that link it to other primitive erinaceids (e.g., enlarged upper and lower fourth premolars, lower molars markedly decreasing in size from m1-m3, talonid basins V-shaped), yet its affinity with any of the recognized erinaceid subfamilies is uncertain. Although Oncocherus is phenetically, and probably phylogenetically, closest to Litolestes Jepsen, the genus is clearly distinguished from Litolestes and other erinaceid taxa by its proportionately larger and more inflated premolars and lower crowned molars, features that were likely adaptations for durophagy. Oncocherus joins a number of endemic mammalian taxa that were apparently confined to more northerly latitudes of the Western Interior of North America during the Late Paleocene.
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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 | 0.002 | 0.002 |
| Science and technology studies | 0.005 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
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".