CACrown ArchivesThe cinema collection
Menu
Research dossier · Science & Nature

Oblong turtle

species of reptile

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 revisionJul 27, 2026
Entity authorityQ305986 ↗
Source-derived summary

The oblong turtle (Chelodina oblonga), also known commonly as the narrow-breasted snake-necked turtle, southwestern snake-necked turtle, (western) long-neck(ed) turtle, and as yaakan or booyi in Noongar language, is a species of turtle in the family Chelidae. The species is endemic to the southwestern part of Western Australia.

The species has been successfully bred in captivity in Cologne Zoological Garden, and the estimated life span is 30-40 years.

While all turtles are popularly believed to be mute, the oblong turtle is known to have a wide range of vocalizations.

Description

Oblong turtles usually have a carapace length of under 30 cm, but have been recorded with a carapace length of up to 40 cm. Hatchlings will have a carapace length of 30 mm.

Distribution and habitat

The natural distribution of the oblong turtle is southwestern Australia, from the Fitzgerald River National Park in the south-eastern edge of the distribution, up to Jurien Bay (Hill River) in the north. There is also a suspected introduced population around Geraldton, another 170 km north of Jurien Bay.

The oblong turtle lives in a wide range of freshwater habitats, including wetlands, lakes and rivers. They are known to be capable of living in urban and agricultural environments, such as urban lakes and dams.

Editorial summary

Begin with the source’s own compact description: “Oblong turtle” is species of reptile. The dossier treats that line as a proposition to test through Oblong, turtle 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 208-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, Oblong, turtle and species is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “species of reptile” 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

Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Jul 27, 2026. The linked authority identifier is Q305986. None of the 0 selected statements returned an explicit reference.

Critical limits

A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. 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 “Oblong turtle”, its source revision and the description used here.
  2. Expand the search: follow Oblong turtle primary sources, Oblong turtle archive and Oblong 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 “Oblong turtle”?
  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 “Oblong turtle” 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.