Vacerrena nana
species of mollusc

Vacerrena nana is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets and slit limpets.
Description
The length of the shell attains 2 mm, the width 1¼ mm, the height 2 mm.
The rather solid shel is elevated-conic. It is sculptured with 15 radiating ribs, the front ones wider apart. The apex is acute and strongly recurved. The aperture is oval.
Distribution
This marine species occurs in the Red Sea.
References
Kilburn, R. N. (1978). The Emarginulinae (Mollusca: Gastropoda: Fissurellidae) of southern Africa and Mozambique. Annals of the Natal Museum.
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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 May 19, 2026. The linked authority identifier is Q7260049. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1978.
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This entry incorporates text from “Vacerrena nana” 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.