Sulcella baisuzhena Guillam & Forel & Song & Crasquin 2022, sp. nov.
Bibliographic record
Abstract
Sulcella baisuzhena Guillam & Forel sp. nov. urn:lsid:zoobank.org:act: 5E0110EC-49F8-4F34-BC57-C46B3232DAAA Figs 7Q–U, 8A–B Diagnosis A species belonging to the genus Sulcella with elongate outline, VB concave, very long and slightly arched DB. Stragulum absent. Etymology The specific epithet refers to the latinization of the Chinese Bai Suzhen (also known as Baishe Niangniang which means White Snake Empress), which is a snake spirit in the Chinese “Legend of the white snake”. Material examined Holotype CHINA • 1 complete carapace (Fig. 7Q); Blue Snake section, Gelaohe Formation, sample 19BAI 74; Famennian, late Devonian; P6M 3991. Paratype CHINA • 1 complete carapace (A–1, Fig. 7R); Blue Snake section, Gelaohe Formation, sample 19BAI 68; Famennian, late Devonian; P6M 3892. Other material CHINA • 1 complete carapace (A-1, Fig. 7S); Blue Snake section, Gelaohe Formation, sample 19BAI 68; P6M 3993 • 1 complete carapace (A-2, Fig. 7T); Blue Snake section, Gelaohe Formation, sample 19BAI 68; P6M 3894 • 1 complete carapace (A-3, Fig. 7U); Blue Snake section, Gelaohe Formation, sample 19BAI 68; P6M 8395 • 1 complete carapace (A-4, Fig. 8A); Blue Snake section, Gelaohe Formation, sample 19BAI 68; P6M 3996 • 1 complete carapace (A-5, Fig. 8B); Blue Snake section, Gelaohe Formation, sample 19BAI 68; P6M 3897 • 15 complete carapaces; Blue Snake section, Gelaohe Formation, samples 19BAI 67, 19BAI 68. All from the Famennian, late Devonian. Dimensions See Fig. 4C. Description Carapace of medium size, elongate with Hmax around to slightly anterior to the ⅓ rd of Lmax, at the junction between DB and ADB; Lmax at mid-H. RV larger than LV, overlapping it all around, sometimes absent or reduced at PVB and AB, stronger along dorsal margin and VB. Dorsal margin with a very long and straight to slightly arched DB, short PDB and uniformly convex ADB. VB concave; AB largely rounded with maximum around mid–H at both valves; PB weakly rounded, PVB slightly truncated. ACA about 155°, PCA close to 90°. Stragulum absent. Surface smooth. Remarks The present species is morphologically close to Sulcella kotchoensis Lethiers, 1981 from the Famennian of the Kotcho Formation, Imperial Island River 1, Western Canada (Lethiers 1981) but it has a less stocky morphology, a less convex PVB, a more concave VB and Lmax located higher. Sulcella kotchoensis Lethiers, 1981 is also larger, with L ranging from 580 to 860 µm and H from 300 to 420 µm. The H/L scatter plot of Sulcella baisuzhena sp. nov. (Fig. 4C) allows to discriminate six ontogenetic stages (A-5 to Ad). The ontogenetic development of this species is marked by the elongation of outline and the VB becoming more concave. Occurrence Samples 19BAI 63, 19BAI 67, 19BAI 68, 19BAI 74, Gelaohe Formation, Blue Snake section, Famennian, late Devonian (this work).
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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) | 0.001 | 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) | 0.020 | 0.009 |
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".