North American Spathian (upper Olenekian, Lower Triassic) neogondolellin conodonts
Bibliographic record
Abstract
Abstract The taxonomy and biostratigraphy of poorly known neogondolellin conodonts from mostly Spathian (upper Olenekian, Lower Triassic) strata are described from widespread localities in North America: high latitude Canadian Arctic, mid‐latitude British Columbia (BC), and lower latitudes in the USA. The occurrence of the neogondolellins in key sections and in matrix of dated ammonoid collections is documented. Neogondolellins characteristic of seven ammonoid zones are identified. Fifteen new conodont species are assigned to four genera: Borinella , Columbitella , Magnigondolella and Neogondolella . Borinella , more common in the Smithian, undergoes a radiation in the early Spathian ‘tirolitid n. gen. A’ ammonoid beds of California eventually resulting in five new Neogondolella species ( Ng . bucheri , Ng . darwinensis , Ng. praeacuta , Ng . sinuosa , and later Ng. spathiconstricta ) and the first new Magnigondolella , Mg. mutata . Several of these plus Bo .? curvata sp. nov. also occur above the tardus Zone in British Columbia (BC). In the next younger ammonoid zone with Tirolites , the first Columbitella are Cb . joanae and Cb. weitschati . Middle Spathian Columbites and Procolumbites ammonoid beds in the USA are dominated by Cb. elongata , whereas the broadly equivalent strata in the north contain Cb. amica , Cb. brevis sp. nov. and Cb. paragondolellaeformis . Late Spathian radiation produces six new species of Magnigondolella : Mg . incurva , Mg .? minuta and Mg. trutchensis in the Prohungarites ammonoid beds, followed by Mg . acuminata , Mg. tozeri and Mg . peribola in the haugi and subrobustus ammonoid zones.
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 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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| 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 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".