Micro-computed tomography study of a three-dimensionally preserved neurocranium of<i>Albanerpeton</i>(Lissamphibia, Albanerpetontidae) from the Pliocene of Hungary
Bibliographic record
Abstract
ABSTRACT The Albanerpetontidae, small salamander-like tetrapods from the Middle Jurassic–Neogene of Laurasia and northern Africa, are widely considered to be lissamphibians; however, relationships among major lissamphibian clades are unresolved. A recently identified, isolated, and three-dimensionally preserved neurocranium (early Pliocene, Hungary) referred to Albanerpeton pannonicum is described, incorporating information gained from the application of micro-computed tomography. It is revealed that the neurocranium is a robust, box-like structure composed of the coossification of the parasphenoid, otic capsules, and occipital elements. The otic capsule endocast reveals the morphology of the endosseous labyrinth, complete with well-defined endosseous semicircular canals and a modestly developed ventral endosseous auditory region; however, details of the individual auditory organs are not discernable from the endocast. Features of the neurocranium and endosseous labyrinth are consistent with the hypothesis that A. pannonicum, and albanerpetontids in general, were somewhat fossorial. The neurocranium and endosseous labyrinth exhibit a mosaic of anuran, urodele, and apodan traits, thus precluding refinement of the phylogenetic position of albanerpetontids. In general, the neurocranium and endosseous labyrinth appear most similar to urodeles, and similarities with apodans and anurans may be due to convergent evolution resulting from similar habits and responses to inner ear stimulation. This new neurocranium represents the best-known specimen of its kind for albanerpetontids, and the data presented here combined with future comparative studies will contribute to a better understanding of the biology and evolution of this group.
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 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 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".