Bibliographic record
Abstract
Tetilla sandalina Sollas, 1886 (Figure 14 (a – g)) Tetilla sandalina Sollas 1886, p. 179; Sollas 1888, p. 1 – 3; pl. I, figs 16 – 27; BrØndsted 1933, p. 7; Cárdenas and Rapp 2015, p. 1504 – 1505, fig. 24; Van Soest 2016, p. 323, fig. 6a – f Description (Figure 14 (a – b)). Sponge pear shaped, up to 4.5 cm height and 3 cm in width. Surface even, slightly setose. The consistency is rather soft and elastic. Single conical osculum slightly displaced to the side from the summit. Numerous short papillae, represented by relatively thick bundles of spicules of main skeleton, protrude out from the base of the body (absent in juvenile forms). Colour light brown. Five specimens examined. Skeleton Skeleton of radially spiral structure. Cortex absent. Spicules (Figure 14 (c – g)). Large oxea, usually with unequal ends, dimensions: 1172 – 2545 – 3565.6 (n = 15) × 13.15 – 26.85 – 38.65 (n = 15) µm. Small oxea, slightly fusiform, with equal ends, dimensions: 567.25 – 734.2 – 990 (n = 15) × 10.1 – 16.3 – 22 (n = 15) µm. Sagittal protriaenes, rhabdome length: 1002 – 1821.3 – 3361.5 (n = 15) × 2.1 – 3.8 – 7.8 (n = 15); length of paired cladomes: 21.6 – 33.8 – 77.1 (n = 15) µm; unpaired cladome length: 64.5 – 115.9 – 223 (n = 15) µm. Raphides, dimensions: 206 – 299 – 370 (n = 10) × 1 – 2 µm. Sigmas centrotylote, spined, dimensions: 9.5 – 11.9 – 13.6 (n = 10) µm. Distribution Azores, off Labrador, and the Kara, Laptev (st. A-102, L-9, O-22) and East Siberian seas (A- 31). Depth range: 33 – 1828. Remarks All studied samples fit well with the species description presented in the monographs of Sollas (1886, 1888)), except for the dimensions and morphology of microscleres (sigmas). The latter, in our case, were characterised by a distinctly pronounced tyle on the shaft and relatively smaller sizes in general. The same distinctions from the original description were mentioned by BrØndsted (1933) and Van Soest (2016), who examined specimens obtained from the Labrador and Kara seas, respectively. Another discrepancy concerns the distinctions in the depth distributions of the Arctic specimens (33 – 314 m) on the one hand and those collected in the Azores (1742 – 1818 m) on the other. However, since the phenomenon of equatorial submergence has frequently been observed in animals of higher latitudes (Ekman 1953), the aforementioned differences can be neglected. On the contrary, minor but persistent morphological differences may serve for the delimitation of the Arctic and Atlantic forms as separate species, but this requires the analysis of the additional materials.
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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) | 0.006 | 0.001 |
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".