Kolihapeltine trilobites, the spiniest scutelluids from the eastern <scp>A</scp>nti‐<scp>A</scp>tlas (<scp>M</scp>orocco, <scp>E</scp>arly <scp>D</scp>evonian): evolution, environment and classification
Bibliographic record
Abstract
Abstract New material from five localities in the P ragian and E msian of the south‐eastern M oroccan T afilalt and M a'der regions sheds new light on the morphology and function of the entire exoskeleton of kolihapeltine trilobites and on their ecology and taphonomy. Entire and articulated specimens are preserved in what appear to be slumped obrution deposits. Monospecific cavity infillings in the H amar L aghdad mounds are considered to have resulted from transport of sclerites from nearby gregarious assemblages. Development of pronounced spinosity is mainly interpreted as a defensive strategy. The overall morphology, in particular the elongated shape of the tail, and the absence of strongly developed muscle attachment areas, points to an epibenthic bottom life rather than a swimming lifestyle. Evolutionary trends mainly concern morphological changes in the shape of the pygidia that narrow considerably and elongate through time. We provide a systematic assessment of the subfamily K olihapeltinae. Hitherto poorly known species of K olihapeltis P rantl and P řibyl are reviewed and their diagnoses completed; two new taxa, K . bassei sp. nov. and K . tafilaltensis sp. nov., are described. S agittapeltis K im is emended after revision of its type species S . triangularis . A new species, S . belkai sp. nov., is described. The genus A ndegavia P illet is discarded after we show that its type species is an indeterminable scutelluid fragment. The new genus H eliopeltis with two species, H . ihmadii gen. et sp. nov. and H . johnsoni gen. et sp. nov., is erected.
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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 | 0.011 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.003 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.000 | 0.003 |
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; both teacher heads agree on what is shown here.
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".