From minions to giants: exceptional upper Devonian cephalopods from the Lompret quarry, Belgium
Bibliographic record
Abstract
Abstract for a poster presented at 11ISCPP. In the last few years, the ‘Carrière de Lompret’ quarry (Chimay municipality, Belgium) has become one of the most frequently visited mineral and fossil collecting spots in Belgium. The amazing richness and diversity in geology, mineralogy, and palaeontology of the middle and upper Frasnian limestones and shales sparks the interest of both collectors and researchers. A growing number of them is joining forces to preserve as many as possible of the scientifically important specimens, and to fully document the quarry’s geodiversity. Cephalopods are amongst the most searched-for fossils in the quarry. In certain beds, they are even the most common type of (macro)fossils. Over the past decade, many hundreds of specimens were carefully collected, facilitating detailed taxonomic studies. The entire sequence documents several successive faunas, wherein ammonoids are rare in the middle Frasnian part of the succession. In the upper Frasnian, Gephyroceratid ammonoids dominate most of the faunas, except for levels where Tornoceratid ammonoids are very abundant. To better comprehend the driving forces of these observed changes, studies on various other fossil groups (like crinoids, brachiopods, corals, graptolites, trilobites, ostracods, conodonts, chondrichthyans, placoderms) and detailed stratigraphical, sedimentological, and geochemical studies are ongoing Some of the exceptional cephalopod finds from the Lompret quarry are presented here, spanning an array of taxonomic groups and displaying a remarkable variation in size, from minute Tornoceratids and Bactritids to middle-sized Manticoceras to large Carinoceras and Beloceras up to giant Crickites well over 30 cm in diameter.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.023 | 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".