''Jujubinus pseudogravinae'' 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 ...

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

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 ...

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 ...

Trochidae The Trochidae, common name top-snails or top-shells, are a family of various sized sea snails, marine gastropod molluscs in the subclass Vetigastropoda. This family is commonly known as the top-snails because in many species the shell resembles ...

, the top snails. This species is considered by some as a synonym of '' Jujubinus gravinae gravinae'' (Dautzenberg, Ph., 1881)

Description

The size of the shell varies between 3 mm and 7.5 mm.

Distribution

This species occurs in the Atlantic Ocean off the

Azores ) , motto =( en, "Rather die free than subjected in peace") , anthem= ( en, "Anthem of the Azores") , image_map=Locator_map_of_Azores_in_EU.svg , map_alt=Location of the Azores within the European Union , map_caption=Location of the Azores wi ...

References

* Nordsieck F. (1973). ''Il genere Jujubinus Monterosato, 1884 in Europa''. La Conchiglia 50: 6–7, 11-12 * Avila S.P., Borges J.P. & Frias Martins A.M. de (2011) T''he littoral Trochoidea (Mollusca: Gastropoda) of the Azores''. Journal of Conchology 40(4): 408–427. page(s): 409

External links

Gastropods.com: ''Jujubinus gravinae gravinae''
pseudogravinae Gastropods described in 1973 Molluscs of the Azores {{Trochidae-stub