Bibliographic record
Abstract
Potamites ecpleopus (Cope, 1876) Type-locality. Middle and upper Amazon, in Brazil and Peru, restricted by Uzzell (1966) to Río Huallaga, somewhere between Rioja, Moyobamba and Balsaspuerto. Pertinent taxonomic references. Cope (1876), Boulenger (1885), Sinitsin (1930), Burt & Burt (1931), Shreve (1935), Cunha (1961), Uzzell (1966), Peters & Donoso-Barros (1970), Sherbrooke & Cole (1972), Duellman (1978), Cunha et al. (1985), Ávila-Pires (1995), Vanzolini (1995), Ávila-Pires & Vitt (1998), Pellegrino et al. (2001), Bell et al. (2003), Castoe et al. (2004), Doan & Castoe (2005), Chávez & Vásquez (2012), Goicoechea et al. (2016). Distribution and habitat. Potamites ecpleopus is endemic to Amazonia, with an apparently disjunct distribution in western (delimited eastward by the Japurá, Purus, and Beni Rivers) and eastern Amazonia (restricted to the Tocantins –Xingu and Xingu–Tapajós interfluviums, south of the Amazon) (Fig. 15). MZUSP 64623, however, comes from the upper Comemoração River, a second order tributary of the Madeira River, an intermediary location between the western and eastern areas of occurrence. Potamites ecpleopus occurs in Brazil, Colombia, Ecuador, Peru, and Bolivia (Fig. 15). In Brazil, it is known from the states of Pará, Amazonas, Acre, Rondônia, and Mato Grosso. Potamites ecpleopus is semiaquatic and diurnal, inhabits primary and disturbed terra firme forests, where it is found close to streams (with sandy, rocky or muddy bottoms), in swampy areas, on the leaf litter or directly on rocks or mud (occasionally on trunks, branches or limbs); active specimens are either at the margin of, or partially submerged in the water, and they may also be found under logs and in holes between rocks at the edge of water (Sherbrooke 1975; Duellman 1978; Cunha et al. 1985; Dixon & Soini 1986; Ávila-Pires 1995; Vitt & Zani 1996; Vitt & Ávila-Pires 1998; Vitt et al. 1998b; 1999; Schlüter et al. 2004; Whitworth & Beirne 2011).
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.016 | 0.002 |
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".