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Record W7128170481 · doi:10.7868/s3034603725060039

New Data on Diatoms and Silicoflagellates of the Late Cretaceous of the Ust'-Manya Section, Severnaya Sos'va River, Subpolar Trans-Urals

2025· article· en· W7128170481 on OpenAlexaboutno aff
T.V. Oreshkina

Bibliographic record

VenueСтратиграфия Геологическая корреляция / Stratigraphy and Geological Correlation · 2025
Typearticle
Languageen
FieldEarth and Planetary Sciences
TopicGeological Studies and Exploration
Canadian institutionsnot available
Fundersnot available
KeywordsCretaceousOutcropBiostratigraphyStructural basinPaleozoicPeriod (music)

Abstract

fetched live from OpenAlex

During the re-examination of the outcrop of marine Upper Cretaceous deposits on the Severnaya Sosva River in the area of the settlement of Ust-Manya, the complexes of the Costopyxis antiqua Zone for diatoms and the Cornua trifurcata Zone for silicoflagellates, presumably dated to the middle Campanian, were established for the first time in the diatomic layer. The associations, numbering at least 40 species of diatoms and 10 species of silicoflagellates, are typical of an epicontinental basin with seasonal contrast. Analogues are known from sections of the eastern slope of the Urals, Northern territories of Canada and the southeastern part of the East European Platform, which indicates stable interbasin connections of the Panboreal realm in the Campanian.

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 imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.055
Threshold uncertainty score0.109

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0030.002
Science and technology studies0.0010.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0020.000

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.

Opus teacher head0.082
GPT teacher head0.273
Teacher spread0.191 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

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".

Quick stats

Citations0
Published2025
Admission routes1
Has abstractyes

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