''Crisilla aartseni'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

of minute

sea snail Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...

, a

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

micromollusk A micromollusk is a shelled mollusk which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine mollusks, although in addition, numerous species of land snails and freshwater mollusks also ...

in the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Rissoidae Rissoidae is a large family of very small and minute sea snails with an operculum, marine gastropod mollusks in the superfamily Rissooidea and the order Littorinimorpha Littorinimorpha is a large order of snails, gastropods, consisting pr ...

.Gofas, S. (2015). Crisilla aartseni (Verduin, 1984). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=670452 on 2015-09-15

Description

Shell color ranges from creamy white to a dark brown, often with splotched patterning. Its average size is about 1.5 millimeters.

Distribution

It is most commonly founds around the southern Spanish coast, near the Gibraltar strait and the Alboran Sea.Worldwide Mollusk Species Database
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References

* Verduin A. (1984). ''On the taxonomy of some recent European marine species of the genus Cingula s.l''.. Basteria 48: 37-87 * Oliver J.D., Templado J. & Kersting D. 2012. ''Gasterópodos marinos de las islas Columbretes (Mediterráneo occidental).'' Iberus, 30(2): 49-87

External links

* Rissoidae Gastropods described in 1984 {{Rissoidae-stub