New taxa of dinoflagellate cysts from the Upper Cretaceous to Palaeocene strata of Bylot Island, eastern Nunavut, Canada
Bibliographic record
Abstract
The Upper Cretaceous to Paleocene strata of Bylot Island, eastern Nunavut, Canada, include marine and terrestrial sedimentary rocks with rich palynomorph assemblages that are valuable in determining the stratigraphy and palaeoenvironments of the region. The assemblages contain biostratigraphically important new taxa, including one new genus and 15 new species of dinoflagellate cysts. The genus is Deltiella; the species are Alterbidinium punctatum, Chlamydophorella ejuncida, Deltiella punctata, Elytrocysta vermiculata, Exochosphaeridium gracile, Gillinia dentata, Gillinia umbraculum, Hystrichosphaeridium procerum, Hystrichosphaeridium prolatum, Microdinium scutella, Microdinium sinuatus, Odontochitina camura, Odontochitina corpucorna, Odontochitina? pilata, and Spiniferella granulata. The restricted stratigraphic ranges of the species have enabled more precise dating of the Cretaceous to Paleocene strata in the eleven surface sections studied. Individual taxa may reflect specific palaeoclimatic settings: for example, Deltiella and some species of Odontochitina may indicate cooler climatic conditions.
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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".