CACrown ArchivesThe cinema collection
Menu
Research dossier · Science & Nature

Blunt-headed salamander

species of amphibian

Specimen drawers, botanical folios and brass scientific instruments under study light
Science and natureInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 25, 2026
Entity authorityQ2513515 ↗
Source-derived summary

The blunt-headed salamander (Ambystoma amblycephalum) is a mole salamander endemic to Mexico. It is only known from the vicinity of its type locality, near Morelia, in Michoacán state in Southwestern Mexico. It inhabits a landscape consisting of a mosaic of natural grasslands and pine-oak forests at elevations of about 2,000 m (6,600 ft) asl. Breeding takes place in ponds. An average adult has a mass of 6.18 grams while wet. Adult females of the species range from 42 to 93 mm and males range from 45.4 to 70.5 mm in standard length.

It has both neotenic and terrestrial populations. Neotenic populations are perennibranchiate and retain their fins. Neotenes are very long with extremely short, blunt heads and round eyes. They have relatively short, thick gills.

Editorial summary

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

Editorial reviewA sound reference starting point where classification, measurement and the date of the underlying evidence remain visible. The current 125-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. For this dossier, Blunt-headed, salamander 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

Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Sep 25, 2026. The linked authority identifier is Q2513515. None of the 0 selected statements returned an explicit reference.

Critical limits

Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. 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
Verify next

Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.

Three-step research path

  1. Establish the record: confirm the title “Blunt-headed salamander”, its source revision and the description used here.
  2. Expand the search: follow Blunt-headed salamander primary sources, Blunt-headed salamander archive and Blunt-headed 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 “Blunt-headed salamander”?
  2. Which observation, specimen, dataset or publication supports the account?
  3. Is the terminology current, historical or disputed?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from “Blunt-headed salamander” 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.