Bibliographic record
Abstract
Discretella discreta (Müller, 1956) Figs. 15C, G, L; 16D, S. *1956 Ctenognathodus discreta n. sp.; Müller, pp. 821– 822, pl. 95, fig. 28. 1989 Neospathodus discreta (Müller); Tang, p. 402, pl. 30, fig. 7. 2005 Discretella sp. A; Orchard, p. 83, fig. 8. 2008 Discretella discreta (Müller); Orchard 2008, p. 402, figs. 8.18, 8.19. 2010 Discretella discreta (Müller); Beranek et al., p. 65, figs. 6.18, 6.19. 2014 Discretella discreta (Müller); Maekawa & Igo in Shigeta et al., pp. 196–202, figs. 141.13–141.33, 142–145, 146.1–146.30. 2018 Discretella discreta (Müller); Maekawa in Maekawa et al., p. 23, fig. 14.4. Number of specimens:>20 Diagnosis. See Müller, 1956. Description. Te carminate-to-segminate P 1 element has an upturned and inverted basal margin in the posterior one-third to one-half of the element. Te cusp is usually larger than the other discrete and upright denticles but not conspicuously. Remarks. Maekawa & Igo (in Shigeta et al., 2014) described two different morphotypes, A and B, for Discretella discreta. Teir morphotype A would correspond to the holotype (Müller, 1956) and their morphotype B has an upturned posterior margin and a relatively broader and triangular cusp. Although Maekawa & Igo (in Shigeta et al., 2014) have recently illustrated numerous specimens, the intraspecific variation of this species remains unclear due to its general scarcity. Based on their illustrations and unpublished material, there seems to be scope for further differentiation. Both morphotypes A and B have a posterior process and hence a tapered posterior margin of the basal cavity. However, some of our specimens do not develop a posterior process and have a rounded posterior margin at the basal cavity. Tose are here assigned to a different species, which for now is kept in open nomenclature (Discretella aff. discreta). Occurrence. Wide global occurrence in the Smithian. Meekoceras beds, Nevada (Müller, 1956). Euflemingites romunderi Zone, Canadian Arctic (Orchard, 2008). Jabal Safra, Oman (Orchard, 2005). North Vietnam (Tang, 1989). Nv. ex. gr. waageni Zone, Taho Formation, Japan (Maekawa et al., 2018).
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.003 | 0.001 |
| Science and technology studies | 0.003 | 0.002 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.030 | 0.013 |
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".