A New Genus of Chimaerid Fish (Holocephali, Chimaeridae) from the Upper Oligocene Sooke Formation of British Columbia, Canada
Bibliographic record
Abstract
A chimaeroid mandibular dental plate from the nearshore upper Oligocene Sooke Formation west of Victoria, Vancouver Island, British Columbia, is described here as a new genus of chimaerid fish (Holocephali, Chimaeridae), Canadodus suntoki, gen. et sp. nov. The new genus differs from mandibular plates of both Recent and Cenozoic Chimaeridae (Chimaera, Hydrolagus) in having a more robust plate with a massive symphyseal tritor filled by laminated whitlockin, the presence of a large compound median tritor and a small inner tritor, as well as the absence of solid whitlockin in the dental structure. The chimaerid individual is estimated to have measured nearly 1 m in total body length. This is a first record of a Paleogene chimaeroid fish in both British Columbia and Canada and only the second record from the Oligocene of the northern Pacific. In addition, the species Chimaera gosseleti Winkler, 1880, is transferred to the genus Harriotta, resulting in the new combination Harriotta gosseleti (Winkler, 1880).
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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) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 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) | 0.003 | 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".