First report of <i>Chelediscus</i> Rushton, 1966 (Trilobita) from Western Gondwana, with description of a new species from the Cambrian Series 2 of Spain
Why this work is in the frame
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Bibliographic record
Abstract
Chelediscus is reported for the first time from the Cambrian of Western Gondwana. This eodiscide genus is known from the Cambrian Series 2 of England, Newfoundland, New York, Sweden and Russia. An emended diagnosis for the genus is provided, which is here assigned to Calodiscidae, and a new species, Chelediscus garzoni sp. nov. is described. The species comes from Cumbres de San Bartolomé municipality, northern Huelva province (Spain), in the upper part of the ‘Cumbres beds’ formation. This horizon is assigned to the regional upper Marianian Stage based on the trilobite assemblage (Serrodiscus Zone), correlating with the lowermost Cambrian Stage 4. Chelediscus carus Repina from the Botoman of Siberia and this Spanish occurrence are the earliest appearances of the genus. The new species suggests that a smooth, unlobed glabella is primitive for the genus. Chelediscus in Spain strengthens faunal links with Avalonia, Baltica, Siberia and Laurentia.urn:lsid:zoobank.org:act:32A57670-48E7-470E-B7AD-A0ACACB2E5C6
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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) | 0.001 | 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 it