Ophiocten hastatum $ Lyman 1878
Bibliographic record
Abstract
Ophiocten hastatum Lyman, 1878 Reports for the Azores: Ophiocten hastatum $ Lyman, 1878: 103, pl. 5, figs. 133–134, 1882: 82–83, pl. 9, figs. 10–11; $ Koehler 1898: 42–44, 73, pl. 7, figs. 32, 33, 1909: 165; Mortensen 1927a: 246; $ Paterson et al. 1982: 117–119, fig. 5; Paterson 1985: 129, fig. 49; Gage et al. 2004: 849–864, figs. 1–84; García-Diez et al. 2005: 49; $ Martynov & Litvinova 2008: 83, fig. 3C; Smirnov et al. 2014: 202–203; Ophiocten longispinum $ Koehler, 1896a: 204–205; Ophiura hastata (Lyman, 1878) — Guille 1982: 80, figs. 5, 6, 7a–b. Type locality: off Marion Island, Southern Ocean (46°46’S, 45° 31’E). See: Lyman (1878); Paterson et al. (1982); Guille (1982); Martynov & Litvinova (2008). Occurrence: cosmopolitan, found in the Atlantic, Southern, and Pacific Oceans (Guille 1982); in the Atlantic from Labrador basin east in the Rockall Trough south to the Bay of Biscay (Paterson 1985), including the Mid-Atlantic Ridge from Reykjanes Ridge south to the Azores (Martynov & Litvinova 2008); with exception of the reports for the Labrador Basin, all other records from the West Atlantic are misidentifications of O. gracilis (Paterson et al. 1982). Depth: 843– 4,700 m (Grieg 1932, Guille 1982); AZO: 1,830 –2,107 m (Lyman 1878, Martynov & Litvinova 2008). Habitat: soft bottoms, muddy sand to ooze (Koehler 1909); opportunistic (Gage et al. 2004). Larval stage: planktotrophic (Gage et al. 2004). Remarks: Lyman (1878, 1882) described Ophiocten hastatum on the basis of material taken by H.M.S. Challenger in Southern Ocean deep waters. Lyman (1878, 1882) also found two specimens of this species among the material collected by the same cruise in Azorean waters (sta 78: 37°24’N, 25°13’W, 1,830 m). Koehler (1896a) described a new species Ophiocten longispinum from the material collected by Hirondelle in the Azores (sta 184: 40°05’N, 27°27’46”W, 1,850 m). Later, Koehler (1898) recanted his previous identification, changing it to O. hastatum and completed Lyman’s original description of this species using Hirondelle material from the archipelago. Koehler (1909) also identified this species at several Princesse Alice stations located inside Azorean waters. More recently, Martynov & Litvinova (2008) identified this species in Azorean northern waters (G.O. Sars, MAR–ECO cruise, sta 42/368: 42°48’N, 29°38’W, 2,063 –2,107 m).
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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 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.012 | 0.002 |
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".