First occurrence of temnospondyls from the Permian and Triassic of Turkey: Paleoenvironmental and paleobiogeographic implications
Bibliographic record
Abstract
Permian and Triassic tetrapods are very rare in Turkey. Yet this group bears important paleoenvironmental and paleogeographical signals to better understand Pangean models, and especially the geodynamic history of the Permian and Triassic in Turkey, which remains highly debated. Here we present and describe the first temnospondyls from Turkey (SE Anatolia) which consist of a Middle Permian branchiosaurid and an Early Triassic stereospondyl. The branchiosaurid is the first representative of its group in Gondwana and the first from the Middle Permian: it therefore brings important paleogeographic implications and supports the hypothesis that anamniotic tetrapods may have used trans-Pangean migration routes between Europe and Gondwana. It also brings new data to the debated depositional environment of the Permian of SE Anatolia. The Triassic stereospondyl represents one of the few tetrapods known from paleoequatorial areas and confirms a relatively rapid faunal turnover of the anamniotic fauna after the Permian-Triassic mass extinction. Les tétrapodes du Permien et/ou du Trias sont très rares en Turquie. Cependant, il a été montré que ce groupe est porteur d’un signal paléoenvironnemental et paléogéographique important, aidant à mieux comprendre les modèles de Pangée, et plus particulièrement l’histoire géodynamique de la Turquie qui demeure très débattue au cours du Permien et du Trias. Nous présentons et décrivons ici les premiers temnospondyles découverts en Turquie (SE d’Anatolie) ; un branchiosauridé du Permien moyen et un stéréospondyle du Trias inférieur. Le branchiosaure à lui seul est le premier représentant du groupe au Gondwana, et le premier datant du Permien moyen : il apporte donc des informations paléogéographiques importantes et confirme que les tétrapodes anamniotiques auraient emprunté des voies de migration trans-pangéennes entre l’Europe et le Gondwana. Il apporte également des données nouvelles concernant l’environnement de dépôt du Permien du Sud-Est d’Anatolie. Le stéréospondyle du Trias, quant à lui, représente un des rares tétrapodes connus dans la zone paléoéquatoriale de l’époque et confirme que le renouvellement faunique des tétrapodes anamniotiques s’est effectué assez rapidement après la grande crise Permien-Trias.
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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 | 0.000 | 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) | 0.001 | 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".