Geissleria triundulata P. Nayak, M. Thacker & B. Karthick, sp. nov.
Bibliographic record
Abstract
Geissleria triundulata P.Nayak, M.Thacker & B.Karthick sp. nov. (Figs 1–40, Fig. 3 represents the holotype) Description:—LM (Figs 3–26): Valves linear-lanceolate, with slightly triundulate margins and weakly protracted, broadly rounded apices. Length 16.0–23.5 µm, width 5.5–6.5 µm (n=60). Raphe filiform, straight. Axial area narrow and linear, slightly widening towards centre of valve. Central area rectangular, formed by one shortened stria on each valve side. Middle striae located at considerable distance from neighbouring two. An isolated stigma present near central nodule. Proximal raphe ends straight and slightly enlarged. Distal raphe endings not discernible in LM. Striae slightly radiate to subparallel throughout, alternatively longer and shorter around central nodule, 22–24 in 10 µm. Areolae not discernible in LM. Annulus barely discernible in LM. SEM (Figs 27–40): Externally raphe branches straight and filiform (Fig. 27). Proximal raphe endings slightly, roundly enlarged (Figs 27, 32–33). Distal raphe ends hooked and curved in same direction at apices and continue on valve mantle (Figs 27–29). Axial area narrow, linear, and widened towards rectangular central area, defined by one shortened stria on each side of valve. A single isolated slit-like stigma present close to central nodule. Central area hyaline and slightly elevated (Figs 32–33). Striae uniseriate composed of transapically elongated lineolate areolae, around 90 in 10 μm. A pair of sub-polar areolae present at both sides of the raphe at valve ends (Figs 28–29). Presence of slit-like transapically elongated structure at apices (Figs 30–31, arrowheads). Internally, entire valve showing organisation of striae, location of stigma and remnants of copulae (Fig 34). Proximal raphe endings slightly hooked and deflecting on same side, terminating onto central nodule of protruding sternum (Figs 37–38). Distal raphe endings terminate in small helictoglossae (Figs 35–36). Virgae raised between slightly sunken striae (Figs 37–38). Warty outgrowths along the long sides of the sub-polar areolae present (Figs 39–40, arrowheads). Type:— INDIA. Maharashtra: Pune, Mutha River, near Jambhali, 18.388833°N, 73.650861°E, 580 m. a.s.l, 25 May 2022. (Holotype AHMA! 3776 = Fig. 3). Habitat:—Epilithic sample collected from the river bank. Etymology:—The specific epithet “ triundulata ” refers to the valve outline of the species. Ecology and distribution:— G. triundulata sp. nov. was found in low electrical conductivity (59.2 µs/cm) and slightly alkaline pH (7.95) waters. The dominant genera in the sample are Pantocsekiella K.T.Kiss & Ács (2016: 62), Fragilaria Lyngbye (1819:185), Sellaphora (Mereschkovsky 1902: 187), and Navicula. As of now, this taxon is known only from the type locality.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 |
| Meta-epidemiology (narrow) | 0.002 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.006 |
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".