Diversity among Taxodioid Conifers: <i>Metasequoia foxii</i> sp. nov. from the Paleocene of Central Alberta, Canada
Bibliographic record
Abstract
A single species of taxodioid conifers is among the dominant floristic elements at two stratigraphically contemporaneous Paleocene fossil localities in central Alberta, Canada. More than 10,000 compression specimens, including oppositely branched stems, vegetative shoots with decussately arranged leaves, pollen cones, pollen, ovulate cones, seeds, and seedlings, provide data for reconstructing a new species of Metasequoia. An in situ permineralized stem provides information about wood structure and suggests that the plant was a canopy tree. As is characteristic of taxodioid conifers in general, most compressed organs of the new species are not specifically diagnostic when evaluated as isolated fragments of the sporophyte. However, a combination of characters from several organs demonstrates the occurrence of a distinct species, M. foxii sp. nov. The diagnostic combination of characters for this species includes leaf size, pollen cone length, ovuliferous cone scale arrangement, seed size and shape, and characters of the seedlings. Ranges of variation in characters of the new species are compared to those of the currently recognized, well‐known species of Metasequoia, M. glyptostroboides, M. occidentalis, and M. milleri, and evolutionary diversification within the genus is considered.
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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 | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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".