A new crocodylomorph (Pseudosuchia, Crocodylomorpha) from the Upper Triassic of Texas and its phylogenetic relationships
Bibliographic record
Abstract
A new crocodylomorph taxon, Pattisaura gracilis, is described based on an associated partial skeleton from the Upper Triassic Dockum Group of northwest Texas. Pattisaura gracilis represents a non-crocodyliform crocodylomorph and can be characterized mainly by a set of character states from the skull, vertebral column, pelvis, and osteoderms. The discovery of P. gracilis expands the distribution range of non-crocodyliform crocodylomorphs in North America. P. gracilis may be closely related to Redondavenator quayensis from northeast New Mexico. With addition of P. gracilis, our phylogenetic analysis does not support the monophyly of Sphenosuchia and the presence of an Argentinian clade, a purely North American clade, or a Middle to Late Jurassic Hallopodidae among non-crocodyliform crocodylomorphs but confirms the closest relationship of Almadasuchus to Crocodyliformes and partly supports the existence of Solidocrania with Hallopus victor as its most basally branching member.http://zoobank.org/urn:lsid:zoobank.org:pub:572159ED-1546-4434-8AAA-052F56287539
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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 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
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".