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Rhinatrema nigrum

species of amphibian

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 14, 2026
Entity authorityQ2213113 ↗
Source-derived summary

Rhinatrema nigrum, the black caecilian, is a species of caecilian in the family Rhinatrematidae found in Guyana, Venezuela, and possibly Brazil. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical moist montane forests, rivers, and intermittent rivers.

Taxonomy

This species was first described by the American herpetologist Emmett Reid Dunn in 1942 as Rhinatrema nigrum, the type locality being Arundabara, British Guiana. It has been included in the genus Epicrionops as Epicrionops niger.

Distribution and habitat

The black caecilian is native to south eastern Venezuela and western Guyana, and possibly northern Brazil. It occurs at altitudes of between 100 and 1,700 m (330 and 5,580 ft) in moist lowland and montane forests, cloud forests, seasonally dry forests, wetlands, marshes and the banks of temporary and permanent water courses. Only four specimens have been recorded, and it is likely that the range of this species is in reality wider than is currently known. Whether the species can adapt to secondary habitats is unknown.

Ecology

As an amphibian, this caecilian is likely to feed on insects, earthworms and other small invertebrates. Clutches of eggs have been found under rocks, where they are guarded by the female.

Editorial summary

Begin with the source’s own compact description: “Rhinatrema nigrum” is species of amphibian. The dossier treats that line as a proposition to test through Rhinatrema, nigrum and species, not as a finished interpretation.

Editorial reviewA practical orientation to terminology and classification, particularly when read beside dated observations, specimens or technical literature. The current lead gives the account dated anchors—1942—that can be checked directly. The selected authority fields contribute no independent date. For this dossier, Rhinatrema, nigrum and species is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “species of amphibian” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Aug 14, 2026. The linked authority identifier is Q2213113. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1942.

Critical limits

A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.

Best used for
  • Current terminology
  • Classification context
  • Finding cited technical literature
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Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.

Three-step research path

  1. Establish the record: confirm the title “Rhinatrema nigrum”, its source revision and the description used here.
  2. Expand the search: follow Rhinatrema nigrum primary sources, Rhinatrema nigrum archive and Rhinatrema research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Rhinatrema nigrum”?
  2. Is the terminology current, historical or disputed?
  3. Which observation, specimen, dataset or publication supports the account?
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Source & attribution

This entry incorporates text from “Rhinatrema nigrum” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.