<em>Cyclopyxis acmodonta</em> n. sp. and <em>Arcella formosa</em> n. sp.: Two New Species of Testate Rhizopods (Arcellinida, Protozoa) from Remnant Wetlands in Ontario, Canada
Bibliographic record
Abstract
Species of the testate rhizopod genera Arcella and Cyclopyxis are found predominantly in the benthos of shallow ponds, forest pools, marshes and other freshwater habitats. Their taxonomy is based on the morphology of their tests — the shell-like structure that houses the living single-celled amoeboid protoplast. This paper describes a new species of Cyclopyxis discovered in two coniferous forest bogs, and a new species of Arcella from a Typha-dominated marsh on the north shore of Lake Ontario, Canada. Cyclopyxis acmodonta Nicholls n. sp. differs from its closest relative C. stellata (Wailes) Deflandre 1929 in its much smaller size and its irregularly shaped pseudostomal aperture, which is embellished with numerous, tiny, sharp-pointed toothlike quartz granules around the interior margin. Although the saucer-like indentations over the dorsal surface of the test of A. formosa Nicholls, Meisterfeld & Török n. sp. resemble similar structures found in several other Arcella species, the large size of A. formosa (165-235 mm in diameter) and its low profile (low height-to-diameter ratio) are the main features distinguishing this new species from other Arcella species.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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".