Alatajassa (Amphipoda, Corophiidea), A New Genus from the Pacific Coast of North America
Bibliographic record
Abstract
[Alatajassa, a new genus of ischyrocerin corophiidean amphipod comprising two species has been discovered on the coast of Pacific North America. Alatajassa similis n. sp. has been found from California to Alaska (41°N 124°W-56°N 134°W) and Alatajassa diversa n. sp. from Amchitka Island, Alaska (51°N 179°E). Alatajassa is so named because of the wing-like expansions on the ischium of gnathopods 1-2 and pereopods 5-7. The genus is unusual in the Ischyrocerini in having long spinous processes extending ventrally from the peduncles of uropods 1 and 2, a stout, uniramous uropod 3, and sexual dimorphism posteriorly rather than anteriorly. Alatajassa, un nouveau genre d'amphipodes Corophiidae Ischyrocerinae comprenant deux especes a ete decouvert sur la cote Pacifique de l'Amerique du Nord. Alatajassa similis n. sp. a ete trouvee de la Californie a l'Alaska (41°N 124°W-56°N 134°W) et Alatajassa diversa n. sp. de l'ile Amchitka, Alaska (51°N 179°E). Alatajassa est nommee ainsi d'apres les expansions aliformes presentes sur l'ischion des gnathopodes 1-2 et des pereiopodes 5-7. Le genre est inhabituel chez les Ischyrocerini par la presence de longs processus epineux s'etendant ventralement des pedoncules des uropodes 1 et 2, d'un uropode 3 fort et unirame, et d'un dimorphisme sexuel visible posterieurement plutot qu'anterieurement., Alatajassa, a new genus of ischyrocerin corophiidean amphipod comprising two species has been discovered on the coast of Pacific North America. Alatajassa similis n. sp. has been found from California to Alaska (41°N 124°W-56°N 134°W) and Alatajassa diversa n. sp. from Amchitka Island, Alaska (51°N 179°E). Alatajassa is so named because of the wing-like expansions on the ischium of gnathopods 1-2 and pereopods 5-7. The genus is unusual in the Ischyrocerini in having long spinous processes extending ventrally from the peduncles of uropods 1 and 2, a stout, uniramous uropod 3, and sexual dimorphism posteriorly rather than anteriorly. Alatajassa, un nouveau genre d'amphipodes Corophiidae Ischyrocerinae comprenant deux especes a ete decouvert sur la cote Pacifique de l'Amerique du Nord. Alatajassa similis n. sp. a ete trouvee de la Californie a l'Alaska (41°N 124°W-56°N 134°W) et Alatajassa diversa n. sp. de l'ile Amchitka, Alaska (51°N 179°E). Alatajassa est nommee ainsi d'apres les expansions aliformes presentes sur l'ischion des gnathopodes 1-2 et des pereiopodes 5-7. Le genre est inhabituel chez les Ischyrocerini par la presence de longs processus epineux s'etendant ventralement des pedoncules des uropodes 1 et 2, d'un uropode 3 fort et unirame, et d'un dimorphisme sexuel visible posterieurement plutot qu'anterieurement.]
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
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".