Selaginopsis trilateralis Fraser 1936
Bibliographic record
Abstract
Selaginopsis trilateralis Fraser, 1936a Selaginopsis trilateralis Fraser, 1936a: 504, fig. 3. Pericladium trilateralis.— Cairns et al., 2002: 25. Syntype. BCPM 976-00574-001: Canada, British Columbia, Houston Stewart Channel, 22 July 1935, 27 – 33 m, labelled "type"; 60% IPA. Lectotype, by present designation. BCPM 976-00574-001: Canada, British Columbia, Queen Charlotte Islands (=Haida Gwaii), Houston Stewart Channel, near Rose Harbour, 30 fm (55 m), 22 July 1935, one colony, 16 mm high, in fairly good condition, without gonothecae, labelled “type”; 60% IPA. Type locality. Canada, British Columbia: Queen Charlotte Islands (= Haida Gwaii), Houston Stewart Channel near Rose Harbour, 55 m (Fraser 1936a). Current status. Valid, as Pericladium trilaterale (Fraser, 1936a). Remarks. Fraser (1936a) did not designate a name-bearing type of his Selaginopsis trilateralis. It was originally described by him as “A rigid colony, 18 mm high…”, suggesting an account of one specimen. A single colony of the species from one of the two original type localities (western end of Houston Stewart Channel, Haida Gwaii, British Columbia), labelled as the “type”, exists in the Fraser Hydroid Collection at the RBCM (BCPM 976-00574-001). That specimen is approximately the same size recorded by Fraser (16 mm vs. 18 mm high). However, as noted above, the species was reported by Fraser (1936a) to have been found at a second location, “…in the western portion of the channel (Houston Stewart Channel), 15- 18 f. (25- 30 m.).” No type material is known to exist from that location, but we have avoided assuming that none exists (ICZN Recommendation 73F). Instead of concluding that the existing type specimen is the holotype by monotypy, we have designated it as the lectotype. Other specimens in the Fraser collection (BCPM 976-00575-001: off Frederick Island, 29 July 1936, 25 m, dry; BCPM 976-00575-002: Frederick Island, slide) are not part of the type series. Those hydroids were collected after the original description of the species was published by Fraser (1936a), and at a different location (Frederick Island, Haida Gwaii) than the type locality. Fraser’s original figure of the species is somewhat misleading in that the proximal branch is illustrated with only two instead of three rows of hydrothecae. All branches in the lectotype colony have three hydrothecal rows. This species is listed as Thuiaria trilateralis in WoRMS. Unlike in the genus Thuiaria Fleming, 1828, the hydrothecal rim of the species is marked by two low, rounded cusps (Fraser 1936a) rather than being circular or sinuous. It is assigned here to Pericladium Allman, 1876 in having hydrothecae arranged in more than two longitudinal rows, and in having hydrothecal margins with two marginal cusps. The spelling of the specific name, as Pericladium trilateralis in Cairns et al. (2002), is corrected here to P. trilaterale.
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 | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.010 | 0.003 |
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".