Bibliographic record
Abstract
Onoba semicostata (Montagu, 1803) (Fig. 8E 1-E 3) Turbo semicostatus Montagu, 1803: 326, pl. 21, fig. 5. Rissoa striata – Wood 1848: 100, pl. 11, fig. 1. Onoba striata – Harmer 1920: 641, pl. 51, fig. 42. Cingula (Cingula) semicostata semicostata – Van Regteren Altena et al. 1954: 12, pl. 4, fig. 35b. — A.W. Janssen 1967: 128, pl. 4, fig. 7. Onoba semicostata – Marquet 1997: 16, pl. 3, fig. 5. — Wienrich 2001: 408, pl. 66, fig. 9. — Raad et al. 2013: 52, fig. 19. — Símonarson & Eiríksson in Eiriksson & Símonarson 2021: 264, pl. 7.3, fig. 5. MATERIAL AND DIMENSIONS. — Maximum height 1.9 mm, width 0.8 mm. — RGM.1364989 (27), leg. ACJ; RGM.1365197 (1), leg. ACJ; RGM.1365095 (800+), leg. AWJ. SPECIES CHARACTERISATION. — Shell small, rissoiform. Smooth protoconch of 1.5 whorl; five round teleoconch whorls separated by deep suture. Adult sculpture consist of axial ribs marked on the upper whorls and numerous fine crowded spiral cords covering the entire whorl. Ovate aperture; rounded, thickened outer lip. DISTRIBUTION. — Middle Miocene: NSB, Germany (Janssen 1967; Wienrich 2001). — Lower Pliocene: Coralline Crag, England (Wood 1848; Harmer 1920) and Belgium (Marquet 1997). — Upper Pliocene: NSB, Belgium (Marquet 1997). — Pliocene to Lower Pleistocene: Iceland (Eiriksson & Símonarson 2021). — Lower Pleistocene: Atlantic, England (Harmer 1920; Norton 1967); Selsoif, NW France (this paper).— Pliocene and Pleistocene (indeterminate):NSB, Netherlands (Van Regteren Altena et al. 1954; Raad et al. 2013). — Holocene: NSB (Strand Petersen 2004). Today this species is present in the Atlantic from Iceland (Warén 1996), Norway (HØisaeter 2009), Kola Peninsula, Russia (Golikov & Kussakin 1978; Nekhaev et al. 2014), British Isles (Fretter & Graham 1978), Madeira (Ávila et al. 2012), southwards to the Alboran Sea in the Mediterranean (Templado & Rolán 1986). Shells collected in the central Mediterranean are probably Late Pleistocene glacial fossils (Amati & Nofroni 2015). Abundant under rocks and among algae, from the intertidal to 1000 m depth. REMARK Onoba semicostata (Montagu, 1803) is primarily a cooler water species that occurs today in the Mediterranean in the Alboran Sea in upwelling zones.
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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 | 0.003 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.002 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.034 | 0.010 |
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".