Adlafia ossiformis Alibert & Hamilton & Pienitz & Antoniades 2023, sp. nov.
Bibliographic record
Abstract
Adlafia ossiformis sp. nov. (Figs 10 AH-AT; 13 A-H) HOLOTYPE. — Canada. Québec, Lake 22AA, 56°33’24”N, 76°28’47”W, 128 m a.s.l., 22.VIII.2015, D. Antoniades (microscope slide designated as the holotype, holo-, CANA [CANA 129481]). ISOTYPE. — Canada. Québec, Lake 22AA, 56°33’24”N, 76°28’47”W, 128 m a.s.l., 22.VIII.2015, D. Antoniades (iso-, ANSP [ANSP-GC68069]). TYPE LOCALITY. — Canada. Québec, Lake 22AA, 56°33’24”N, 76°28’47”W, 128 m a.s.l. ETYMOLOGY. — The epithet ‘ossiformis’ is Latin, describing this species’ bone-shaped valves. ECOLOGY AND DISTRIBUTION. — This species was found only in 22-AA lake of the study, where it represented 4% of the diatom assemblage. Lake 22-AA had the highest TP concentration in the dataset (23.4 µg/L). REGISTRATION. — http://phycobank.org/103920. DESCRIPTION Frustules rectangular and narrow in girdle view.Valves elliptic at mid-valve with broad capitate ends. Valve dimensions (n =20): length 13.5-20.5 µm, width 4.5-5.5 µm and 30-35 striae in 10 µm. External valve face flat, margin rounded. Axial area slightly curved to linear and narrow. Central area round to elliptic,>1/2 width of valve, with 5-7 marginal striae between proximal raphe endings. Raphe linear, with no kink-like irregularity halfway between mid-valve and apex (Fig. 13A); externally, central raphe fissures widely spaced with small indistinct ends bent to one side (Fig. 13C). Terminal raphe fissures curved down onto upper region of mantle (Fig. 13G). A weakly formed groove present parallel to raphe on mantle up to valve face. Internally, raphe on small sternum, straight, with no kink-like irregularity (Fig. 13B). Proximal raphe fissures bent and deflected on a raised nodule (Fig. 13D). One surface depression present on central nodule (Fig. 13D, E). Terminal fissures end on small elongated helictoglossae, isolated from apex mantle (Fig. 13H). Hyaline area of terminal nodule more developed on secondary side of valve. Striae continuous, straight to weakly arched from valve face to mantle, more widely spaced around central area. Voigt faults weak to indistinct on secondary side of valve 2/3 of distance between mid-valve and apex. Striae continuous around base of apices. Areolae round to rectangular, 4-6 per stria. Areolae covered with a fine poroid velum with 8-9 circular rows of small pores around outside edge and linear rows on inner area. Internally, areolae recessed between virgae. Adlafia ossiformis sp. nov. has a shape that is easily confused in LM with Psammothidium ventralis (Krasske) Bukhtiyarova & Round and Sellaphora guyanensis Metzeltin & Lange-Bertalot, but careful examination of both valves will make species differentiation possible.
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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) | 0.002 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.004 | 0.003 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.002 | 0.001 |
| Insufficient payload (model declined to judge) | 0.014 | 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".