MULTI-PROXY PALEOENVIRONMENTAL AND PALEOECOLOGICAL RECONSTRUCTION OF THE FOREMOST FORMATION (UPPER CRETACEOUS, CAMPANIAN) OF ALBERTA
Bibliographic record
Abstract
Abstract The Foremost Formation of southern Alberta, Canada, is the basal member of the Cretaceous (Campanian) Belly River Group and has been understudied relative to the overlying Oldman and Dinosaur Park formations of this group. Here we describe and analyze the sedimentology, foraminiferal micropaleontology, vertebrate microsite paleoecology, and paleoenvironmental conditions of the Foremost Formation. Outcrop of the Foremost Formation is characterized by estuarine and shallow marine facies that transition upward into coastal/fluvial facies that accumulated during the Claggett marine regression of the Western Interior Seaway (WIS). This is consistent with at least two rapid transgressive events driven by local subsidence interrupting the overall regressive phase of the Claggett marine cycle, creating the aggrading profile in the lower portion of the sections measured here, and suggesting that orogenic buildup in the Rocky Mountains and its associated basin subsidence were a controlling factor of local deposition in the WIS. A low abundance, low diversity agglutinated benthic foraminiferal fauna suggests frequently stressed oxygen and salinity conditions in marginal marine environments. Vertebrate microsite faunas display a mixed freshwater to brackish water environmental influence, with an increase in diversity upsection in conjunction with increased freshwater influence. Among dinosaurs, ceratopsids and ankylosaurs experience notable relative abundance decreases through the Foremost Formation and into the lower Oldman Formation, potentially reflecting preference for coastal habitats and/or plant resources relative to other terrestrial herbivores.
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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 | 0.002 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".