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Canthus (herpetology)

feature of a amphibians' and reptiles' head

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionMay 23, 2025
Entity authorityQ746139 ↗
Source-derived summary

In snakes and amphibians, the canthus, canthal ridge or canthus rostralis is the angle between the flat crown of the head and the side of the head between the eye and the snout, or more specifically, between the supraocular scale and the rostral scale. It is defined as a sharp ridge in many viperids, but is rounded in most rattlesnakes, for example.

Editorial summary

“Canthus (herpetology)” enters the record as feature of a amphibians' and reptiles' head. Crown Archives preserves that source wording while asking what Canthus, herpetology and feature can confirm, complicate or overturn.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current 62-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Canthus, herpetology and feature.
Editorial analysis

Why this record matters

“Canthus (herpetology)” is worth following because a concise public description often conceals a longer documentary argument. Here, Canthus, herpetology and feature provides the most credible route into that argument.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated May 23, 2025. The linked authority identifier is Q746139. None of the 0 selected statements returned an explicit reference.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. 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

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Canthus (herpetology)”, its source revision and the description used here.
  2. Expand the search: follow Canthus (herpetology) primary sources, Canthus (herpetology) archive and Canthus 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 “Canthus (herpetology)”?
  2. Which cited source is closest to the event, object or claim?
  3. Which institution is responsible for the underlying evidence?
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Source & attribution

This entry incorporates text from “Canthus (herpetology)” 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.