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Angular roughshark

species of shark

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJun 21, 2026
Entity authorityQ1089264
Source-derived summary

The angular roughshark (Oxynotus centrina) is a rough shark of the family Oxynotidae.

Taxonomy

Biologist Carl Linnaeus described the angular roughshark, O. centrina, in 1758. This name was finalized and accepted by the scientific community as the official name for the species in 1976.

Description

At birth, they are less than 25 cm (9.8 in) and they mature at about 50 cm (20 in). Most records are of individuals less than 1 m (3.3 ft), but they can reach about 1.5 m (4.9 ft). Individuals from the Mediterranean Sea usually measure less than 80 cm (2.6 ft). Their litter size is seven or eight pups off Angola to 23 in the Mediterranean. They have ridges over their eyes that expand into large, rounded knobs, which are covered with enlarged denticles – these are absent in other species of rough sharks. They possess very large spiracles that are vertically elongated, being almost as high as the length of their eyes. Their first dorsal spine is oriented slightly forward.

Editorial summary

“Angular roughshark” enters the record as species of shark. Crown Archives preserves that source wording while asking what Angular, roughshark and species can confirm, complicate or overturn.

Editorial reviewUseful for establishing the present vocabulary of the subject while preserving a route back to the evidence on which that vocabulary rests. The current lead gives the account dated anchors—1758, 1976—that can be checked directly. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Angular, roughshark and species.
Editorial analysis

Why this record matters

“Angular roughshark” is worth following because a concise public description often conceals a longer documentary argument. Here, Angular, roughshark and species provides the most credible route into that argument.

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 Jun 21, 2026. The linked authority identifier is Q1089264. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1758 and 1976.

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
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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 “Angular roughshark”, its source revision and the description used here.
  2. Expand the search: follow Angular roughshark primary sources, Angular roughshark archive and Angular 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 “Angular roughshark”?
  2. Is the terminology current, historical or disputed?
  3. Has classification or technical consensus changed since the cited source?
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Source & attribution

This entry incorporates text from Angular roughshark” 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.