''Anna'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

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 ...

s, 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 ...

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

s 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 ...

Pisaniidae The Pisaniidae are a taxonomic family of medium-sized 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 classifi ...

Species

According to the

World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scien ...

(WoRMS), the following species is included within the genus ''Anna'' * † '' Anna massena'' Risso, 1826 (

nomen dubium In binomial nomenclature, a ''nomen dubium'' (Latin for "doubtful name", plural ''nomina dubia'') is a scientific name that is of unknown or doubtful application. Zoology In case of a ''nomen dubium,'' it may be impossible to determine whether a ...

) ;Species brought into synonymy: * ''Anna assimilis'' (Reeve, 1846): synonym of ''

Aplus assimilis ''Aplus assimilis'' is a species of sea snail, a marine gastropod mollusc in the family Pisaniidae The Pisaniidae are a taxonomic family of medium-sized sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, moll ...

'' (Reeve, 1846) * ''Anna capixaba'' Coltro & Dornellas, 2013: synonym of '' Ameranna capixaba'' (Coltro & Dornellas, 2013) * ''Anna dorbignyi'' (Payraudeau, 1826): synonym of ''

Aplus dorbignyi ''Aplus dorbignyi'' is a species of sea snail, a marine gastropod mollusk in the family Pisaniidae. Description The shell size varies between 10 mm and 20 mm. This shell is quite variable in pattern and shape. Usually it is quite elon ...

'' (Payraudeau, 1826) * ''Anna florida'' Garcia, 2008: synonym of '' Ameranna florida'' (Garcia, 2008) * ''Anna goncalvesi'' (Coltro, 2005): synonym of '' Engina goncalvesi'' Coltro, 2005 * ''Anna marijkae'' (De Jong & Coomans, 1988): synonym of '' Ameranna milleri'' (Nowell-Usticke, 1959) * ''Anna milleri'' (Nowell- Usticke, 1959): synonym of '' Ameranna milleri'' (Nowell-Usticke, 1959) * ''Anna royalensis'' Watters, 2009: synonym of '' Ameranna royalensis'' (Watters, 2009) * ''Anna scabra'' (Locard, 1886): synonym of '' Aplus scaber'' (Locard, 1891) * ''Anna willemsae'' (De Jong & Coomans, 1988): synonym of '' Ameranna willemsae'' (De Jong & Coomans, 1988)

References

Pisaniidae Gastropod genera {{Caenogastropoda-stub