Clanculus kraussii
species of mollusc
Clanculus kraussii is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
There is also a homonym Clanculus kraussi (non-Philippi) Sowerby, 1897, a synonym of Clanculus atricatena J.R. Tomlin, 1921
Description
The size of the shell varies between 9 mm and 23 mm. The umbilicate, moderately thick shell has a conoid shape. The five convex whorls are separated by canaliculate sutures. The first whorls are eroded, whitish, the rest roseus, cinereous or brownish, ornamented with a few radiating white streaks. They are spirally granose-lirate with 6 finely beaded lirae on the penultimate whorl, the fifth larger, more prominent, simulating a carina. The body whorl is angulate, plano-convex beneath and concentrically cingulate. The about 7 cinguli are granose with the interstices sometimes bearing concentric lirulae. The aperture is rhomboidal. The lip within is thickened and sulcate.
Begin with the source’s own compact description: “Clanculus kraussii” is species of mollusc. The dossier treats that line as a proposition to test through Clanculus, kraussii and species, not as a finished interpretation.
Why this record matters
The phrase “species of mollusc” 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.
Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated May 19, 2026. The linked authority identifier is Q16980801. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1897 and 1921.
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.
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This entry incorporates text from “Clanculus kraussii” 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.