Nassarius granifer
species of mollusc
Nassarius granifer, common name the granulated dog whelk or granulated nassa, is a species of sea snail with an operculum, a marine gastropod mollusc in the family Nassariidae, the mud snails or dog whelks.
Description
The length of the shell of this species varies between 10 mm and 18 mm.
The shell is rather small, ovate, thick and globular. Its color is of an ash-white. The spire is conical and, pointed, composed of six whorls, the lowest much larger than all the other. This body whorl presents on its surface conical, distant tubercles, disposed in four series. A few transverse striae ornament the base. The upper whorls have only a single row of tubercles. The ovate aperture is narrow, emarginated at the upper part, at its union with the outer lip, which is thick, striated internally. The columella is arcuated, covering the inner lip, which is expanded into a white, thick callosity, covering the whole lower surface, and a portion of the upper whorls.
Begin with the source’s own compact description: “Nassarius granifer” is species of mollusc. The dossier treats that line as a proposition to test through Nassarius, granifer and species, not as a finished interpretation.
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The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Apr 16, 2024. The linked authority identifier is Q6967462. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Nassarius granifer” 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.