''Crisilla simulans'' is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

of minute

sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...

, a marine

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

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

in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Rissoidae Rissoidae is a large family of sea snails. Members of the Rissoidae are very small in size and possess an operculum. Distribution and habitat Rissoidae are found worldwide. They live on sandy or gravel bottoms among algae or marine plants. Th ...

.MolluscaBase eds. (2023). MolluscaBase. Crisilla simulans (Locard, 1886). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1473073 on 2023-12-12

Description

''Alvania simulans'' has a small (1.5-2mm) shell that is pearly white in color, and partially translucent.

Distribution

''Crisilla simulans'' is found in the North Atlantic and European waters.Gofas, S. (2015). ''Alvania simulans'' Locard, 1886. In: MolluscaBase (2015).

References

* Romani, L.; Tisselli, M. & Nofroni, I. (2020). On the alleged presence of Crisilla perminima (Manzoni, 1868) in the Mediterranean Sea (Gastropoda: Littorinimorpha: Rissoidae), with notes on the taxonomy of Alvania simulans Locard, 1886. Bollettino Malacologico. 56 (2): 112-117.

External links

ocard, A. (1886). Prodrome de malacologie française. Catalogue général des mollusques vivants de France. Mollusques marins. Lyon: H. Georg & Paris: Baillière. x + 778 pp
Crisilla Gastropods described in 1886 {{Rissoidae-stub