Architectural modelling of the fractal-like Ediacaran rangeomorph C <i>harnia masoni</i>
Bibliographic record
Abstract
The frondose Rangeomorpha are a poorly understood group of Ediacaran fractal-like organisms with a body plan that is unknown among modern organisms. The first described rangeomorph Charnia masoni is one of the most iconic members of the Ediacaran biotas, first described from Charnwood Forest in Leicestershire. The complex branching of the Rangeomorpha in three dimensions is a challenge to understand, and previous work by the late Martin Brasier sought to explain architectural concepts with simplified diagrams. The present work builds on that earlier work using 3D sculpting to reconstruct the fractal-like branching, while also honouring the shapes seen in the type material of Charnia masoni . The resulting forms are surprisingly complex and have enormous surface areas. If the surfaces of Charnia as reconstructed were covered with simple choanocytes, it could be considered as a potentially highly effective full-body suspension-feeding metazoan organism.
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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 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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".