Descriptions of two new marine species of the sand-dwelling testacean genus Corythionella: C.gwaii sp.n. and C.rachelcarsoni sp.n., and a revised description of C.acolla Gol.[Rhizopoda: Filosea, or Rhizaria: Cercozoa]
Bibliographic record
Abstract
Three species of the filose testate amoeboid genus Corythionella co-existing in subsurface samples of beach sand interstitial seawater were discovered in the summer of 2006 near Sandspit, Haida Gwai (Queen Charlotte Islands, British Columbia, Canada). One of these was assigned to C. acolla Golemansky, after the specific circumscription of this taxon was revised to exclude smaller forms and forms with distinctively different test morphology that have been previously published under this binomen. The other two morphotypes were assigned to two new species, C. gwaii n. sp. and C. rachelcarsoni n. sp., owing to their consistent and statistically well-defined sizes and shapes. C. gwaii is characterized by a pronounced concavity of the ventral surface of its test and an elliptical pseudostomal aperture that is wider than long. C. rachelcarsoni is characterized by a test that is about one-half the size of C. gwaii and C. acolla and further differs from them by virtue of its relatively longer neck region associated with its minimally flared collar surrounding a pseudostomal aperture that is significantly larger (relative to test width) than in C. acolla. Also, the scales covering the test are significantly smaller than those in C. acolla. Scales of C. gwaii and C. rachelcarsoni apparently lack the marginal rim and median ridge found in scales of C. acolla emend.
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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 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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".