A review of the evolution, biostratigraphy, provincialism and diversity of<scp>M</scp>iddle and early<scp>L</scp>ate<scp>T</scp>riassic conodonts
Bibliographic record
Abstract
Abstract The taxonomy, diversity, evolutionary lineages, and stratigraphical distributions of M iddle and early L ate T riassic conodonts are reviewed and re‐evaluated. Twenty‐five genera are recognized in the M iddle and early L ate T riassic, including a new genus cited in open nomenclature. Of these, 24 genera are assigned to two families and seven subfamilies. The family G ondolellidae consists of the subfamilies C ornudininae, E pigondolellinae, N eogondolellinae, N ovispathodinae, P aragondolellinae and P seudofurnishiinae. The family G ladigondolellidae is monotypic, consisting of the subfamily G ladigondolellinae. The genus N eostrachanognathus is not assigned to any family or subfamily as its origin is unclear. Conodont provincialism was low in the early A nisian, but from the late A nisian faunistic differences started to increase and became stronger during the early L adinian, reaching a peak around the mid‐ L adinian. Provincialism remained strong until the earliest C arnian and changed to an all‐ T riassic low in the early T uvalian. The provincialism between N orth A merica and T ethys rebounded on the specific level during the late T uvalian. Diversities on generic and specific levels have been established, and two major conodont diversity cycles are recognized: the first ranges from the B ithynian (early A nisian) to the J ulian (late early C arnian), and the second is restricted to the T uvalian (late C arnian).
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 | 0.002 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.003 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.002 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 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".