Benthic island community on the back of a snail: Silurian, Anticosti Island, CanadaThis article is one of a series of papers published in this Special Issue on the theme<i>The dynamic reef and shelly communities of the Paleozoic. This Special is in honour of our colleague and friend Paul Copper</i>.
Bibliographic record
Abstract
A single specimen of the large Silurian gastropod Phanerotrema sp. from the Goéland Member on Anticosti Island preserves an outstanding microcosm of its surrounding community, including multiple trophic groups, strategies for niche partitioning, and innovative adaptations for survival in a mud-dominated marine ecosystem. At least seven associations are recorded in this fossil specimen, including the gastropod itself, healed breakage from an apparently failed attempt at durophagous predation, domichnial bioerosion, encrustation by a stromatoporoid, nestling behaviour and commensal embedment by a lingulid brachiopod, and epifaunal attachment by two cornulitids. As a benthic island, the gastropod conch provided a favourable isolated habitat for hard substrate colonizers. This unique specimen sheds light on the broader Paleozoic ecosystem, including the potential importance of benthic islands in the evolution of niche-partitioning strategies in space-limited communities.
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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.004 | 0.000 |
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".