New ediacaran rangeomorphs from Mistaken Point, Newfoundland, Canada
Bibliographic record
Abstract
Hapsidophyllas flexibilis new genus and species and Frondophyllas grandis new genus and species are rare Ediacaran (ca. 565 Ma) rangeomorph forms, herein termed “hapsidophyllids,” which are endemic to Mistaken Point, Newfoundland, Canada. These two taxa are highly disparate in overall morphology, the former being a low-level, multibranched “network of leaves” and the latter a meter-long frond. Despite their dissimilarity in gross morphology, the two genera share a unique flexible, leaflet-type structure with a fine-scale branching structure that resembles that of charnid rangeomorphs. These leaflet structures are unknown from any other rangeomorph or Ediacaran group, and are herein termed “hapsidophyllid leaflets.” Hapsidophyllids grew by an iteration of structural units, with small rangeomorph modules making up the larger hapsidophyllid leaflets, which in turn composed the larger hapsidophyllid organism. The presence of hapsidophyllid leaflets in both Hapsidophyllas and Frondophyllas suggest the two genera were related taxonomically, with their very different gross morphologies reflecting ecological adaptations to exploit different suspension-feeding tiers.
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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 | 0.000 | 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 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".