Bibliographic record
Abstract
Macandrevia tenera (Jeffreys, 1876a) Figures 32, 33 Terebratula tenera Jeffreys, 1876a, p. 250. Terebratula (Waldheimia) tenera – Jeffreys (1878), p. 405, pl. 22, fig. 7. Waldheimia (Macandrevia) tenera – Davidson (1886), p. 66, pl. 12, figs. 6–10. Macandrevia tenera – Beecher (1893), p. 396, pl. 1, fig. H2. Description: Compressed equi- to ventribiconvex shell with L/W ratio 1.06–1.43. Outline typically slightly truncated, elongate and egg-shaped, but smaller specimens and occasionally larger specimens are broad and egg-shaped. Dorsal valve usually longer than wide. Shell fragile and rather dull. Ventral umbo small, less prominent and more delicate than that of Macandrevia cranium. Anterior commissure rectimarginate. Deltidial plates rudimentary, bordering moderately sized and elongate pedicle opening. Ridges bordering deltidial plates hardly developed. Ornamentation lacking except for weak growth lines, which are more distinct than those of M. cranium. Shell matrix densely endopunctate. Colour light yellowish-brown. Hinge teeth in ventral valve high, but delicate and supported by short dental plates. Brachial loop in dorsal valve narrow and horseshoe-shaped. Cardinal process is a short ridge between socket ridges and attached directly to valve floor. Small specimens with a short but high septum centred at approximately 2/5 valve length. Largest specimen 13 mm long and 10 mm wide. Depth range: 207–2652 m (Jeffreys 1876a,b; Cooper 1973a). Temperature range: Based on four stations, the range is 1.6– 4.5˚C (this study). Salinity range: Based on three stations, the range is 34.96–35.33 (this study). Substrate: Globigerina ooze with stones (Jeffreys 1876a). Specimens are found attached to gravel. Geography: NW North Atlantic, Labrador in Canada, and S Greenland (Jeffreys 1876a; Cooper 1973a). A ‘recently dead’ specimen collected NW of Ireland was also assigned to this species by Brand et al. (2003).
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.018 | 0.003 |
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".