Trace fossils from the Early Silurian Upsalquitch Formation, Upsalquitch Forks-Charlo region, northern New Brunswick, eastern Canada
Bibliographic record
Abstract
A relatively diverse, abundant, and well-preserved trace fossils, consisting of 19 ichnogenera (30 ichnospecies), is discovered for the first time from the Early Silurian Upsalquitch Formation, Upsalquitch Forks-Charlo region, northern New Brunswick, eastern Canada. They are systemically described herein as : Acanthorhaphe isp., Calycraterion isp., Chondrites intricatus (Brongniart, 1823), C. targionii (Brongniart, 1823), C. recurvus (Brongniart, 1823), C. isp., Circulichnus montanus Vialov, 1971, Cochlichnus anguineus Hitchcock, 1858, Didymaulichnus lyelli (Roualult, 1850), Furculosus carpathicus Roniewicz and Pie?kowski, 1977, Helminthopsis abeli Ksi??kiewicz, 1977, H. hieroglyphica Heer in Maillard, 1887, Helminthorhaphe isp., Mammillichnis aggeris Chamberlain, 1971, Palaeophycus heberti (de Saporta, 1872), P. tubularis Hall, 1847, Palaeophycus isp., Phycodes palmatus (Hall, 1825), P. templus Han and Pickerill, 1994, Planolites annularius Walcott, 1890, 1890, P. beverleyensis (Billings, 1862), P. montanus Richter Rudolf, 1937, P. terraenovae Fillion and Pickerill, 1990, Protovigularia dichotoma McCoy, 1850, P. tuverculata (Williamson, 1887), Rhizocorallium isp., Rusophycus isp., Skolithos verticalis (Hall, 1843), Teichichnus rectus Seilacher, 1955, and Trichophycus isp. Of these, Calycraterion isp., Furculosus carpathicus, Mammillichnus aggeris, Phycodes templus, Planolites terraenovae, Protovigularia tuverculata, and Trichonphycus isp. are recorded for the first time from the Silurian deposits and the ichnogenus Mammillichnis is the first record from Canada. These trace fossils associated with sedimentary features suggest that the Upsalquitch Foramation has been deposited in the deep-sea slope environment. This recording also indicates that trace fossils of the ancient slope environment, which corresponds to the archetypal Zoophycos ichnofacies of bathyal environmont, are much more diverse than those currently known.
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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 | 0.004 | 0.004 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.005 | 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".