Bibliographic record
Abstract
Pseudochitinopoma occidentalis (Bush, 1905) Figs 7F, 8 Hyalopomatopsis occidentalis Bush, 1905: 229–230, pl. 40, figs 3, 22, pl. 44, figs 2, 4, 8–9 (type locality: Virgin Bay, Prince William Sound, southern Alaska, United States; on tubes of Serpula splendens Bush, 1905, now S. columbiana). Chitinopoma occidentalis – Hartman 1948: 50–51, fig. 12a–f (Alaska, Peninsula; intertidal to 229 m). Chitinopoma groenlandica (non Mörch 1863) – Berkeley & Berkeley 1961: 663 (Carmel Canyon, central California; 36–55 m). Pseudochitinopoma occidentalis – Zibrowius 1969a: 7 –9, fig. 2a–g (Canoe Bay, Alaska; Shelton, San Juan Archipelago and Puget Sound, Washington; off Santa Rosa Island and Carmel Canyon in central California; intertidal to 229 m). — Bastida-Zavala 2008: 38 –39, fig. 9A–D (Alaska, Washington, Oregon and California; intertidal to 16 m; on rocky bottoms and PVC plates). — Kupriyanova et al. 2012: 68 –72, figs 7A–E, 8A–E (Canada: British Columbia; United States: Alaska, Washington and California; Mexico: Baja California; intertidal to 157 m; on tubes of Serpula sp., Crucigera zygophora, Vermiliopsis infundibulum (Philippi, 1844), now as V. multiannulata (Moore, 1923) for eastern Pacific records, shells of the brachiopod Laqueus californianus (Koch, 1848), alcyonarians, solitary corals, tunicates, burrowing clams, rock and fouling plates). Material examined 658 specimens: DH (24) Aug. 2002, AK (66) Jul. 2000, AV (7) Aug. 2000, PW (4) Aug. 2003, KD (358) Aug. 2001, ST (81) Aug. 2001, KT (8) Sep. 2003, WA (75) Aug. 2000, OR (1) Aug. 2000, HB (18) Sep. 2003, SF (12) Sep. 2001 and 2011, MO (4) Sep. 2013. Additional material Five specimens: LACMNH N1908, 1 specimen (California, approx. 36°36' N, 121°53' W, Monterey Shale, dredged off Del Monte, 12–16 m, 3 Jun. 1934, coll. E.F. Ricketts, as Ditrupa sp.); LACMNH N1909, 2 specimens (California, approx. 37°12' N, 122°24' W, Moss Beach, Jul. 1933, as? Ditrupa); LACMNH N1910, 2 specimens (California, approx. 37°12' N, 122°24' W, Moss Beach, 1934, as? Ditrupa). Diagnosis Tube white, smooth; with a longitudinal ridge; without transverse ridges, peristomes or alveoli. Opercular peduncle smooth, white. Operculum white, spherical or conical (Fig. 7F). Collar with fin-and-blade chaetae (Fig. 9N). Taxonomic remarks Pseudochitinopoma occidentalis was the species with the largest distribution in the survey, with 12 localities in the northeastern Pacific, from Dutch Harbor, Alaska, to Morro Bay, California. It was also the second most common species represented on fouling plates; only Hydroides dianthus, a species from the U.S. east coast, was encountered more often (Table 1). Despite its frequency on fouling plates, P. occidentalis has not been reported as NIS elsewhere. Ecology Intertidal to 229 m (Hartman 1948; Zibrowius 1969a). Rocky bottoms, on tubes of Serpula columbiana, Crucigera zygophora, Vermiliopsis multiannulata, shells of the brachiopod Laqueus californianus, alcyonarians, solitary corals, tunicates, burrowing clams and PVC fouling plates (Bush 1905; Bastida-Zavala 2008; Kupriyanova et al. 2012). Distribution Northeastern Pacific, from Alaska to Ensenada, west coast of Baja California Peninsula (Kupriyanova et al. 2012). In this survey, Pseudochitinopoma occidentalis was abundantly and frequently on fouling plates from Dutch Harbor, Kachemak Bay, Kodiak and Sitka, Alaska, and Puget Sound, Washington; occasionally from Valdez Bay, Prince William Sound and Ketchikan, Alaska, Coos Bay, Oregon, Humboldt Bay, San Francisco Bay and Morro Bay, California (Fig. 8).
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 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.029 | 0.006 |
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".