Critical review of fossil record of Ranina Lamarck, 1801 (Decapoda, Brachyura, Raninidae), with description of Tethyranina n. gen.
Bibliographic record
Abstract
Pasini and Garassino (2017a) revised the fossil record referred to Ranina Lamarck, 1801 by Karasawa et al. (2014). As result only four species were considered as possible valid species within Ranina: R. palmea E. Sismonda, 1846, R. pellattieroi De Angeli and Beschin, 2011, R. propinqua Ristori, 1891, and R. ranina (Linnaeus, 1758). These species are herein revised and discussed, based on updated observations and critical review of the fossil materials and on a re-definition of the main diagnostic proxy characters sensu Schweitzer (2003) of the type species R. ranina (Linnaeus, 1758). This review allows us to establish that R. ranina from the middle Pleistocene of Ryukyu Islands (Japan) and R. palmea from the middle Miocene of Italy have consistent proxy characters with the extant Ranina to be considered as valid species within the genus. Moreover, Tethyranina n. gen., with T. propinqua (Ristori, 1891) n. comb., is herein proposed to accommodate this questionable fossil species previously assigned to Ranina. Finally R. pellattieroi De Angeli and Beschin, 2011, lacking the typical characters of Ranina, is considered as a doubtful species within Ranininae.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.002 | 0.007 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.005 | 0.003 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.003 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.006 | 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".