Priotrochus obscurus
species of mollusc
Priotrochus obscurus is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Subspecies
Priotrochus obscurus obscurus (Wood, 1828) (synonyms: Gibbula (Priotrochus) sepulchralis (Melvill, 1899); Gibbula sepulchralis (Melvill, 1899); Priotrochus sepulchralis Melvill, 1899; Trochus nabateus Issel, 1869; Trochus signatus Jonas, 1844)
† Priotrochus obscurus ponsonbyi (G. B. Sowerby, 1888) (synonyms: Monilea (Priotrochus) ponsonbyi (G. B. Sowerby, 1888); Monilea obscura ponsonbyi (G.B. Sowerby, 1888); Monilea ponsonbyi (G.B. Sowerby, 1888); Priotrochus alexandri Tomlin, 1926; Trochus (Gibbula) ponsonbyi G. B. Sowerby, 1888; Trochus ponsonbyi G.B. Sowerby, 1888)
Description
The shell size varies between 7 mm and 20 mm. The very solid, thick, narrowly perforated shell has a conical shape and is elevated. It is ashen-white, with longitudinal chestnut streaks or maculations. The spire is elevated. The apex is acute. The sutures are slightly impressed, the whorl below them closely appressed. The shell contains 6 to 7 whorls. The upper ones are subangular and nodulose in the middle. The body whorl shows a coronal series of knobs, on large specimens becoming obsolete toward the aperture.
The public source identifies “Priotrochus obscurus” as species of mollusc. This brief keeps that definition visible, then builds a research path around Priotrochus, obscurus and species.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Priotrochus obscurus”, the useful work is to connect “species of mollusc” to the records capable of establishing context and consequence.
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 6, 2026. The linked authority identifier is Q7245534. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1828, 1899, 1869 and 1844.
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 “Priotrochus obscurus” 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.