Eunotia giraffensis Siver, Oddsund & Lott 2022, sp. nov.
Bibliographic record
Abstract
Eunotia giraffensis Siver, Oddsund & Lott sp. nov. (LM Figs 1–8, SEM Figs 9–14) Description:— Valves are slightly dorsi-ventral, elongate, with broadly rounded and obliquely rostrate apices that are deflected slightly towards the dorsal margin (Figs 1–8). Valves range in length from 26–68 µm with a mean of 39 µm, and in diameter from 3.2–6.5 µm with a mean of 3.7 µm (n = 40). The ventral margin is slightly concave, becoming almost linear on smaller valves, and is more or less parallel with the dorsal margin, and of equal diameter throughout except at the apices. Small spines may be present on the virgae between the striae on the valve margin. Striae range from 16–25 per 10 µm, with a mean of 22. Striae are evenly spaced, parallel over most of the valve, becoming more closely spaced towards the apices (Figs 1–8). Striae are continuous from the valve face onto the mantle on both the ventral and dorsal sides (Figs 10, 12–14). Areolae are small, circular, closely spaced, and open on both the external and internal valve surfaces. The mantle is deep, approximately 3.5–4 µm, and forms a right angle with the valve margin on both the ventral and dorsal sides (Figs 11–14). The margin of the mantle is thickened around each apex (Figs 10, 12). The proximal end of the raphe commences midway down the mantle (Figs 13–14). From this point, the raphe rises slowly until it reaches the valve margin, then turns approximately 45º up onto the valve face, terminating midway across the valve face close to the apex. The portion of raphe on the valve face is straight and the distal end is not curved or recurved (Figs 9, 11). A distinct hyaline zone extends approximately 3 µm from the proximal end of the raphe towards the center of the valve (Figs 13–14), is continuous along the lower side of the raphe, and extends up onto the valve face terminating near the apex. The striae are more closely spaced on the mantle below the raphe (Figs 13–14), and a discontinuity zone is often observed midway along the raphe. Internally, the distal raphe fissure terminates within a thick and well-formed helictoglossa (Figs 10, 12), which in turn is surrounded by a hyaline zone. A single rimoportula is found at one of the valve apices (Fig. 12). Type:— CANADA. Lac de Gras kimberlite field region, Northwest Territories: Rock specimen sub sampled from section 16-3-42 of the Giraffe Pipe core (holotype circled specimen on slide “ GP 16-3 - 42 B” Canadian Museum of Nature CANA 129307 = Fig. 7. Isotype circled specimen on slide “ GP 16-3 - 42 C” P. Siver’s personal collection = Fig. 5). Etymology:— The species epithet refers to the type locality.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 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".