Bibliographic record
Abstract
Genus Lithochrysa Carpenter 1935, stat. res. Lithochrysa Carpenter, 1935: 262, 265, 269, 270; Adams 1957: 72; Tjeder 1966: 247; Adams 1967: 231 (as a synonym of Paleochrysa [sic]); Willmann 1993: 242; Archibald & Makarkin 2017: 399. Type species. Palaeochrysa wickhami Cockerell, 1914, by original designation. Emended diagnosis. May be distinguished from other genera of Nothochrysinae by a combination of the following. Forewing: (1) im elongate [Cimbrochrysa, Danochrysa, Asiachrysa, Okanaganochrysa, Leptochrysa: broadly pentagonal; Stephenbrooksia: very long, narrow]; (2) 2m-cu located in proximal part of im [Cimbrochrysa, Asiachrysa: approximately in middle of im; Kimachrysa, Pimachrysa, Pamochrysa, Hypochrysa, Asthenochrysa: proximad im]; (3) two gradate series in radial space [Okanaganochrysa, Triplochrysa: three; Dictyochrysa, Adamsochrysa: four or more]; (4) inner gradate series of radial space arranged in smooth line [Palaeochrysa, Tribochrysa: arranged in strongly broken line]. Hind wing: (5) MA fused with RP proximally for long distance [Archaeochrysa, Stephenbrooksia, Leptochrysa: separate]. Species included. Five species: Lithochrysa borealis Archibald & Makarkin, 2017 from the early Eocene of Driftwood Canyon, British Columbia, Canada; and L. wickhami, L. ferruginea (Cockerell, 1909), stat. res., L. concinnula (Cockerell, 1909), and L. meyeri sp. nov., all from the late Eocene of Colorado, Florissant, USA. Occurrence. Eocene (Ypresian to Priabonian) of North America. Remarks. Adams (1967) synonymized Lithochrysa and Palaeochrysa. Archibald & Makarkin (2017), however, examined new photographs of their type species, L. wickhami (Cockerell, 1914) and P. stricta Scudder, 1890, and found them clearly distinguished: in both the fore- and hind wings of Lithochrysa, Psm is poorly developed, strongly zigzagged, and the crossveins of the inner gradate series are arranged in a smooth line, but in Palaeochrysa, Psm is well developed, very slightly zigzagged (especially in the hind wing), and the crossveins of the inner gradate series are arranged in strongly broken line.
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 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 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 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 | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.020 | 0.004 |
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.
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".