Upper Cretaceous pollen flora from the Vilui Basin, Siberia: Circumpolar and endemic<i>Aquilapollenites</i>,<i>Manicorpus</i>, and<i>Azonia</i>species
Bibliographic record
Abstract
A detailed LM and SEM examination of the Upper Cretaceous Timerdyakh Formation microflora from the Vilui Basin yielded 13 Aquilapollenites, two Manicorpus, and three Azonia species. Comparisons with existing taxa from the Russian Federation and North America are impeded by the fact that many previously described forms were investigated using LM only, while SEM was very rarely used. Consequently, some of the pollen types reported in this study could not be ascribed to any previously documented taxa and have been described as nine new species. Further one previously described variety has been renamed. Except for two Azonia species and four Aquilapollenites species that also occur in Alaska, Canada and the Rocky Mountains in USA, the remaining taxa described here are restricted to the Late Cretaceous Khatanga‐Lena‐Subprovince. The several species unique to the Vilui Basin might indicate separate evolutionary paths for the genera Aquilapollenites and Manicorpus in North America and both northern and southern Asia during the Upper Maastrichtian.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 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 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".