CRETACEOUS TROPICAL RAINFORESTS FROM NORTHERN MEXICO AND ITS RELATIONSHIP WITH SOUTH-CENTRAL NORTH AMERICAN FLORAS
Bibliographic record
Abstract
ESUMEN Estudios previos sugieren que las selvas tropicales y paratropicales dominadas por angiospermas tuvieron una distribucion importante en America del Norte durante el Cenozoico temprano (Paleoceno-Eoceno). Investigaciones recientes indican que fl oras bajo condiciones megatermales podrian ha-ber estado presentes en el norte de Mexico y centro-sur de Estados Unidos de America desde el Cretacico Superior (ca. 73 Ma). En Coahuila, en los sedimentos de las forma-ciones Cerro del Pueblo y Olmos, se han documentado diversas floras que, por su contenido fosilifero y su ubicacion paleo-geografi ca, sugieren la presencia de selvas tropicales y paratropicales. Aqui hacemos un breve recuento de la composicion fl oristica, caracteristicas fi sonomicas de las plantas, asi como de las interpretaciones paleoclimaticas o paleoambientales de las paleofl oras del norte de Mexico y centro-sur de EU. Tambien analizamos la similitud fl oristica de estas formaciones basados en morfogeneros de la madera. Nuestros resultados muestran que la similitud fl oristica entre formaciones tiene cierta congruencia geografi ca. Sin embargo, existen elementos con amplia distribucion y otras plantas endemicas en localidades parti-culares, lo cual sugiere cierta diferenciacion en su composicion. La validez de este patron es, sin embargo, preliminar debido a la au-sencia de un entendimiento profundo de la composicion fl oristica de estas comunidades hasta el momento.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 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) | 0.000 | 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 teacher head, 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".