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Record W7109202980 · doi:10.5281/zenodo.17823854

Sclerosaurus armatus Meyer

2025· article· W7109202980 on OpenAlexaboutno aff

Bibliographic record

VenueZenodo (CERN European Organization for Nuclear Research) · 2025
Typearticle
Language
FieldEarth and Planetary Sciences
TopicPaleontology and Evolutionary Biology
Canadian institutionsnot available
Fundersnot available
KeywordsHolotypePostcraniaType specimenParatypeFemur

Abstract

fetched live from OpenAlex

Sclerosaurus armatus Meyer in Fischer, 1857 Holotype. Unnumbered in collections of the Institut für Geo- und Umweltwissenschaften of Albert-Ludwigs-Universität, Freiburg. Part and counterpart blocks preserving a partial postcranial skeleton. Type locality. Quarry at Warmbach near Rheinfelden, Baden, Baden-Württemberg. Type horizon. Plattensandstein Formation, Upper Buntsandstein Subgroup. Age: Middle Triassic (Anisian: Aegean). Referred material. NMB Bs. 28, part and counterpart blocks with a nearly complete, largely articulated skeleton preserved as natural mold. Holotype of “ Labyrinthodon ” ruetimeyeri Wiedersheim, 1878 (= Aristodesmus ruetimeyeri Seeley, 1896). Former quarry at Riehen, Kanton Basel-Stadt, Switzerland. Röt Formation, Upper Buntsandstein Subgroup (Anisian: Aegean). Diagnosis. Distinguished by the following features: long, posterolaterally projecting spike on pedicle formed by supratemporal; quadratojugal with pair of dorsoventrally flattened spines and additional spine posteroventral to paired spines; crowns of posterior dentary teeth aligned mesiolingually, slightly overlapping each other; narrow band of dermal armor comprising two or three rows of osteoderms extending on either side of body midline; osteoderms with external sculpturing composed of irregular pits; distal end of femur with intercondylar canal; and robust astragalocalcaneum (Sues and Reisz 2008). Comments. Using casts prepared from the holotype and NMB Bs. 28, Sues and Reisz (2008) provided a detailed anatomical description. With a total length of approximately 50 cm, NMB Bs. 28 is the largest procolophonid currently known. F. Huene (1912) initially classified Sclerosaurus armatus as a procolophonid but later reinterpreted it as a pareiasaur (F. Huene 1932 a). Lee (1995) recovered Sclerosaurus armatus as the sister-taxon to a clade comprising pareiasaurs and turtles in his phylogenetic analysis but considered the possibility that it was a large-bodied ‘ aberrant’ procolophonid. Sues and Reisz (2008) redescribed Sclerosaurus armatus and recovered it as a leptopleuronine procolophonid in their analysis. Cisneros (2008) considered it most closely related to Scoloparia glyphanodon, from the Evangeline Member of the Wolfville Formation (Carnian) of Nova Scotia (Canada), based on the shared presence of dermal armor. However, the dermal osteoderms of Sclerosaurus armatus extend along the midline of the back whereas one specimen of Scoloparia glyphanodon has a nuchal ‘ shield’ composed of small osteoderms. Both conditions are autapomorphic for their respective taxa and should not be coded as the same character-state. References. Fischer (1857), Meyer (1859), Wiedersheim (1878), Seeley (1896), F. Huene (1911 a, 1912, 1932 a), Lee (1995), Cisneros (2008), Sues and Reisz (2008).

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 imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.013
Threshold uncertainty score0.043

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.000
Science and technology studies0.0010.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0130.004

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.

Opus teacher head0.031
GPT teacher head0.234
Teacher spread0.204 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

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".

Quick stats

Citations0
Published2025
Admission routes1
Has abstractyes

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