The Pachynidae fam. nov. (Crustacea: Amphipoda: Lysianassoidea)
Bibliographic record
Abstract
The new family Pachynidae is established. Three new genera are described: Renella gen. nov., Smaraldia gen. nov. andUltimachelium gen. nov. and fifteen new species: Drummondia marlo sp. nov., D. tridentata sp. nov., Figorella angulosasp. nov., F. formosa sp. nov., F. franklin sp. nov., Pachychelium tropicalis sp. nov., Pachynus obsolescens sp. nov. andSmaraldia springthorpei sp. nov. from Australian waters; Ekelofia eltanin sp. nov. from Antarctic waters; Prachynellashijiki sp. nov. from Japanese waters; Pachychelium fucaensis sp. nov. from south-western Canadian and Californian wa-ters; Prachynella epa sp. nov. and Pr. oculata sp. nov. from Californian waters; and Drummondia luce sp. nov. and Ulti-machelium tac sp. nov. from southern Chilean waters. New records of Pachynus barnardi Hurley, 1963 and Prachynellalodo J.L. Barnard, 1964 are reported from Canadian waters; Drummondia corinellae Lowry, 1984, Figorella tasmanicaLowry, 1984, Pachynus denticulatum Lowry, 1984, P. pugilator Lowry, 1984, Sheardella kapala Lowry, 1984 and S. tan-garoa Lowry, 1984 from Australian waters; and Renella sculptidentata (Ren, 1991), Ultimachelium nichollsi (Lowry, 1984) and U. schellenbergi (Lowry, 1984) from Antarctic waters.
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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) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.015 | 0.007 |
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".