A remarkable insect from the Pennsylvanian of the Joggins Formation in Nova Scotia, Canada: insights into unusual venation of Brodiidae and nymphs of Megasecoptera
Bibliographic record
Abstract
The discovery of a new megasecopteron, Brodia jogginsensis sp. nov., is reported from the Joggins Formation, a UNESCO World Heritage Site in Nova Scotia, Canada. The new species diagnosis is based on the unique pattern of hind wing venation bearing three anterior branches of MP and pectinate CuP with four posterior branches. Its occurrence in Langsettian deposits of the Maritimes Basin correspond well with other Pennsylvanian Brodiidae known from the Coal Measures of the UK and Mazon Creek in Illinois, USA. Based on our re-examination, we propose to transfer the genus Pyebrodia, with P. martinsnetoi Brauckmann & Herd, 2003 Brauckmann, C. & Herd, K. J. 2003. Insekten-Funde aus dem Westfalium D (Ober-Karbon) des Piesberges bei Osnabrück (Deutschland). Teil 1: Palaeoptera. Osnabrücker Naturwissenschaftliche Mitteilungen, 28 (2002), 27–69. [Google Scholar], described as a putative member of Brodiidae, into Palaeodictyoptera family incertae sedis as it lacks most of the diagnostic features of Brodiidae. The holotype of Eubrodia dabasinskasi Carpenter, 1967 Carpenter, F. M. 1967. Studies on North American Carboniferous insects. Part 5. Palaeodictyoptera and Megasecoptera from Illinois and Tennessee with a discussion of the order Sypharopteroidea. Psyche, 74, 58–84.[Crossref] , [Google Scholar], housed in a private collection, was supplemented by the description of an additional specimen housed in The Field Museum, Chicago. The fossil record of Brodiidae is reviewed and additional remarks concerning the wing morphology and the function of specialized structures, such as reinforcements in the form of a specialized crossvein between A1 and CuP, are given. Putative nymphs of Brodiidae and development of wings in Megasecoptera are discussed.http://zoobank.org/urn:lsid:zoobank.org:pub:741846CB-FAD0-4103-90D3-2896D8909E94
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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 | 0.003 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| 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".