<i>Prumnopitys anglica</i> sp. nov. (Podocarpaceae) from the Eocene of England
Bibliographic record
Abstract
Abstract Leaves from the Eocene Bournemouth Freshwater Beds of southern England assigned originally to the genus Podocarpus L'Hér. ex Pers. (Podocarpaceae) as Podocarpus eocenicus Unger—currently treated as Amentotaxus gladifolia (R. Ludwig) D.K. Ferguson, Jähnichen & Alvin—are re‐examined to assess their generic and familial status. Well‐preserved cuticle on one specimen and its gross morphology, together with the morphology of other associated specimens suggests that they should be placed in Prumnopitys Philippi (Podocarpaceae), the long, lanceolate leaves resembling Pr. amara (Blume) de Laub. (= Sundacarpus amarus (Blume) C.N. Page). Because the fossil taxon is consistent with the genus Prumnopitys and not with Amentotaxus gladifolia (Taxaceae), a new species, Prumnopitys anglica D.R. Greenw., C.R. Hill & Conran sp. nov., is proposed. Phylogenetic comparison with other Prumnopitys species suggests that Pr. anglica is close to the extant Australasian species, Pr. amara but is still relatively isolated. The presence of Prumnopitys in the earliest Palaeocene of Asia and the Eocene of southern England supports the view that Podocarpaceae were an uncommon but distinctive component of Northern Hemisphere Late Cretaceous and Palaeogene floras before becoming largely extinct there in the Neogene.
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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".