Bibliographic record
Abstract
Argyrotheca jacksoni Cooper, 1973 (Fig. 14K, L) Argyrotheca jacksoni Cooper, 1973a: 17, pl. 3, figs 9-13. — Bitner et al. 2008: 282-284, fig. 3A-K. — Logan et al. 2008: 303. fig. 3G-O. — Zezina 2010: 1191. — Logan & Bitner 2013: 169-171, fig. 6A-M. Argyrotheca australis – Zezina 1987: 558. Argyrotheca sp. — Hiller 1994: 784, fig. 12.8-12.9. MATERIAL EXAMINED. — South Madagascar. ATIMO VATAE, stn CP 3615, 1 bivalved specimen, 1 ventral valve. DEPTH RANGE. — 284- 286 m. MEASUREMENTS. — Length 1.6 mm, width 1.9 mm, thickness 1.0 mm; length 1.8 mm, width 2.4 mm. REMARKS This species is characterized by its thin shell, small size (length of ventral valve rarely exceeding 2 mm) and numerous, shallowly rounded ribs. The investigated specimens are consistent with specimens of this species recorded by Cooper (1973a), Logan et al. (2008) and Logan & Bitner (2013) from the Red Sea. The specimens of A. jacksoni described from the Persian Gulf (Bitner et al. 2008) differ slightly from those studied here and in the Red Sea in having more marked ribs. In outline and ornamentation the specimens from Madagascar are similar to A. cuneata (Risso, 1826) from the Mediterranean Sea, but lack the pink-red wash between the costae which is characteristic of that species. The studied specimens differ strongly from another Argyrotheca species described from this region, A. angulata Zezina, 1987, in outline and ornamentation. A. angulata is very transversely elongate (see below) and its shell is nearly smooth, having only four fine radial lines (Zezina 1987).
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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 | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.012 | 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".